My linux configurations (or Dotfiles)

These are used on Mint XFCE 19.1, Ubuntu and Cygwin.

These are settings for bash, vim, etc.

To debug any ShellScript, just add set -x after the shell bang: https://stackoverflow.com/questions/36273665/what-does-set-x-do

• My linux configurations (or Dotfiles)
  • To install them
  • Fix system crash
  • To list all programs using a given port
  • Install Sublime Text
  • Enable hibernation
  • ksuperkey
  • Ksysguard & others
  • chroot
  • Optionally install KDE
  • Hide user account from login screen
  • Install wine & others
  • Remove Default XFCE 4 Keybinds
  • Create Default Keybinds
  • Linux system information

• The table of contents used on this Markdown was generated by:
  1. git clone https://github.com/evandroforks/markdown-toc
  2. cd markdown-toc
  3. npm -g install
  4. cd ../this-repository-root
  5. markdown-toc README.MD

To install them

1. First backup your settings, only then, clone this repository using this command:

   git clone --recursive https://github.com/evandrocoan/MyLinuxSettings.git ~/Downloads/MyLinuxSettings
   

   And move them to your main's user folder replacing your own settings:

   rsync -r -t -v -s ~/Downloads/MyLinuxSettings/ ~/
   

2. Add yourself admin and sudo groups, for special privileges:

   1. sudo usermod -a -G adm yourusername (to view system logs, etc)
   2. sudo usermod -a -G sudo yourusername
   3. Use journalctl -o short-precise -k -b -1 -p 4 to view system logs errors (-p 4). It also use colors, so it is better than directly opening /var/log/syslog.
   4. https://unix.stackexchange.com/questions/181067/how-to-read-dmesg-from-previous-session-dmesg-0

3. Enable core dump generation on /var/crash/ by with sudo systemctl enable apport

   1. ulimit -c
   2. cat /proc/sys/kernel/core_pattern
   3. https://askubuntu.com/questions/966407/where-do-i-find-the-core-dump-in-ubuntu-16-04lts

4. Disable Ctrl+Space keybind to disable input!

   1. gsettings set org.freedesktop.ibus.general.hotkey triggers []
   2. https://askubuntu.com/questions/243639/ctrlspace-has-been-bound-to-invoke-some-input-method-and-does-not-work-in-ema

5. Enable the .gitignore_global file with:

   1. git config --global core.excludesfile ~/.gitignore_global
   2. https://stackoverflow.com/questions/7335420/global-git-ignore

6. Fix ~/.ssh/config permissions:

   1. chmod 755 ~/.ssh
   2. Fix not accepting ssh connections with authorized_keys
   3. https://unix.stackexchange.com/questions/36540/why-am-i-still-getting-a-password-prompt-with-ssh-with-public-key-authentication
   4. chmod 600 ~/.ssh/config
   5. https://serverfault.com/questions/253313/ssh-returns-bad-owner-or-permissions-on-ssh-config

7. Fix ssh cleaning up terminal output:

   1. vim /etc/bash.bash_logout

   if [ "$SHLVL" = 1 ]; then
       [ -x /usr/bin/clear ] && /usr/bin/clear
   fi

   1. https://superuser.com/questions/186037/how-to-prevent-clearing-of-terminal-output-when-i-exit-an-ssh-session

8. To detach any ssh anytime just press Enter + ~~ + . (press ~ twice to input a single ~)

9. To reset terminator terminal press Ctrl+Shift+G (it will fix tmux messing with input move after losing the ssh connection into a tmux session)

   git clone https://github.com/evandroforks/tmux-better-mouse-mode ~/scripts/tmux-better-mouse-mode/
   git clone https://github.com/evandroforks/tmux-sensible ~/scripts/tmux-sensible/
   git clone https://github.com/evandroforks/tmux-resurrect ~/scripts/tmux-resurrect/
   

10. To install tmux on Windows (msys2) use: Alexpux/MSYS2-pacman#50 (comment) - Manually Install Pacman Binaries

    1. To disable daylight saving on Msys2 or Debian: ln -s /usr/share/zoneinfo/Etc/GMT-1 /etc/localtime -f or TZ=Etc/GMT+3 date

11. Configuring tigervnc (for RDP)

    1. https://serverspace.io/support/help/install-tigervnc-server-on-centos-8/
       1. yum install tigervnc-server
       2. sudo vim /etc/tigervnc/vncserver.users, :2=yourusername for access on port 5902, using Remmina VNC plugin (not RDP)
       3. sudo vim /etc/tigervnc/vncserver-config-defaults, session=plasma (see the .desktop files on /usr/share/xsessions for the session names)
       4. vncpasswd after logging in as yourusername, to set the VNC password
       5. sudo systemctl enable --now vncserver@:2, to enable the systemd service for the user yourusername on port 2=5902
    2. https://tigervnc.org/
    3. https://wiki.archlinux.org/title/TigerVNC
    4. https://stackoverflow.com/questions/15816/changing-the-resolution-of-a-vnc-session-in-linux#:~:text=In%20TigerVNC%2C%20when%20you%20are,the%20one%20that%20you%20like.
    5. To add a custom resolution to the remotE machine running VNC server:
       1. cvt 1680 1000

          $ cvt 1680 1000
          # 1680x1000 59.89 Hz (CVT) hsync: 62.17 kHz; pclk: 139.25 MHz
          Modeline "1680x1000_60.00"  139.25  1680 1784 1960 2240  1000 1003 1013 1038 -hsync +vsync
          

       2. xrandr --newmode "1680x1000_60.00" 139.25 1680 1784 1960 2240 1000 1003 1013 1038 -hsync +vsync
       3. xrandr --addmode VNC-0 "1680x1000_60.00" (xrandr --addmode DP-1 "1680x1000_60.00")
       4. https://www.tecmint.com/set-display-screen-resolution-in-ubuntu/
    6. Fix anydesk on Linux (by disabling Wayland and using Xorg), sudo vim /etc/gdm/custom.conf

       # GDM configuration storage
       
       [daemon]
       # Uncoment the line below to force the login screen to use Xorg
       WaylandEnable=false
       #AutomaticLoginEnable=true
       #AutomaticLogin=afonso
       

       1. vim /etc/sddm.conf
       2. vim /etc/sddm.conf.d/autologin.conf
       3. https://wiki.archlinux.org/title/SDDM
       4. https://askubuntu.com/questions/1131921/anydesk-remote-server-display-not-supported-e-g-wayland

12. After installing, reload the XFCE components, so the settings does not get overridden.

    This should reload the XFCE panel components:

    # https://www.makeuseof.com/tag/refresh-linux-desktop-without-rebooting/
    xfce4-panel -r && xfwm4 --replace &
    

    For other components, research how it could be done, or just install the settings by using another user account or desktop environment as KDE Plasma, Mate, Cinnamon, etc.

13. Set your Android WIFI as a metered connection:

    1. iwgetid to list WIFI/wireless connection SSID
    2. nmcli -f connection.metered connection show YOUR_WIFI_SSID
    3. nmcli connection modify YOUR_WIFI_SSID connection.metered yes
    4. https://askubuntu.com/questions/711949/set-wifi-as-metered-connection

14. sudo apt-get install anacron && sudo vim /etc/anacrontab

    # the maximal random minutes delay added to the base delay of the jobs
    RANDOM_DELAY=45
    
    # the jobs will be started during the following hours only
    START_HOURS_RANGE=3-22
    
    # These replace cron's entries
    # period in days    delay in minutes    job-identifier  command
    1                   5                   cron.daily      run-parts --report /etc/cron.daily
    7                   10                  cron.weekly     run-parts --report /etc/cron.weekly
    @monthly            15                  cron.monthly    run-parts --report /etc/cron.monthly
    1                   1                   kill-twinkle    killall -9 twinkle
    1                   1                   kill-jami       killall -9 jami-gnome
    1                   1                   disable-lid-events /bin/bash /home/yourusername/scripts/wakeup-events.sh
    1                   1                   fixmonitorcolors sleep 50 && /bin/bash /home/yourusername/.xprofile
    
    # https://bigint.wordpress.com/2016/08/10/xfce-panel-hiding-maximized-window-title/
    # https://forum.xfce.org/viewtopic.php?id=10836 - change xfwm4-settings through command line
    # https://stackoverflow.com/questions/14612371/how-do-i-run-multiple-background-commands-in-bash-in-a-single-line
    1                   1                   restart-xfwm4   sudo -u yourusername xfwm4 --replace & sleep 3 && xfconf-query -c xfwm4 -p /general/titleless_maximize -s false && sleep 2 && xfconf-query -c xfwm4 -p /general/titleless_maximize -s true

    1. https://www.thegeekdiary.com/centos-rhel-anacron-basics-what-is-anacron-and-how-to-configure-it/
    2. https://linux.die.net/man/5/anacrontab
    3. https://unix.stackexchange.com/questions/18151/how-to-follow-links-in-linux-man-pages
    4. https://askubuntu.com/questions/761658/manually-run-an-anacron-job
    5. https://www.certdepot.net/rhel7-how-get-started-anacron/
    6. https://serverfault.com/questions/52335/job-scheduling-using-crontab-what-will-happen-when-computer-is-shutdown-during

15. Configure ps aux monitoring:

    1. sudo vim /etc/systemd/system/monitor-ps-aux.service (with contents of ./scripts/monitor-ps-aux.sh)
    2. sudo systemctl daemon-reload
    3. sudo systemctl enable monitor-ps-aux.service
    4. sudo systemctl start monitor-ps-aux.service
    5. sudo systemctl status monitor-ps-aux.service

Install XFCE from sources

1. xfce4-stuff

   cd ~/.scripts
   bash build_xfce4.sh

2. xfce4-panel / whiskermenu

   # if: ls /usr/local/lib/xfce4/panel-plugins is a file
   # move it: mv /usr/local/lib/xfce4/panel-plugins{,old}
   xfce4-panel -q && PANEL_DEBUG=1 xfce4-panel
   
   # May be install it from source: https://github.com/gottcode/xfce4-whiskermenu-plugin/blob/master/INSTALL
   sudo rsync -ar /usr/lib/x86_64-linux-gnu/xfce4/panel/plugins/ /usr/local/lib/xfce4/panel-plugins/
   sudo rsync -ar /usr/share/xfce4/panel/plugins/ /usr/local/share/xfce4/panel/plugins/

3. xf86-input-libinput (Fix mouse scroll speed without using bugged has as imwheel!)

   git clone https://github.com/evandroforks/xf86-input-libinput
   cd xf86-input-libinput
   
   sudo apt-get install xserver-xorg-input-libinput
   # dpkg -l | grep xserver-xorg-input-libinput
   git checkout 0.29.0
   
   sudo apt-get build-dep libinput
   autoreconf -vif
   ./configure --prefix=/usr
   make
   make install

   1. To these change take effect, restart your xorg session, i.e., logout and login again.
   2. https://gitlab.freedesktop.org/xorg/driver/xf86-input-libinput/-/merge_requests/12 - WIP: Add scroll distance scale setting
   3. https://gitlab.freedesktop.org/libinput/libinput/-/issues/185 - Support setting scroll speed
   4. https://askubuntu.com/questions/255890/how-can-i-adjust-the-mouse-scroll-speed/1278266#1278266

Vim style cheat

1. Select all lines:

   1. ggVG
   2. gg moves to first line. V starts visual mode. G jumps to last line thereby selecting from first to last line
   3. https://vi.stackexchange.com/questions/9028/what-is-the-command-for-select-all-in-vim-and-vsvim

2. In vim, how can I quickly switch between tabs?

   1. g, t Next tab
   2. g, T Prior tab
   3. nnn, g, t Numbered tab
   4. https://superuser.com/questions/410982/in-vim-how-can-i-quickly-switch-between-tabs

3. Splitting a single file into multiple windows on Vim

   1. Ctrl+w, v Vertical Split
   2. Ctrl+w, n Horizontal Split
   3. https://superuser.com/questions/1139804/splitting-a-single-file-into-multiple-windows-on-vim

4. Is there a way to move a split page to a new tab in Vim?

   1. Ctrl+w, Shift+t
   2. https://superuser.com/questions/117969/is-there-a-way-to-move-a-split-page-to-a-new-tab-in-vim

5. How to copy selected lines to clipboard in vim

   1. Copy to the clipboard " * y
   2. The unnamed register " " y
   3. 10 numbered registers " 0 y to " 9 y
   4. The small delete register " - y
   5. 26 named registers " a y to " z y or " A y to " Z y
   6. four read-only registers " : y, " . y, " % y and " # y
   7. the expression register " = y
   8. The selection and drop registers " * y, " + y and " ~ y
   9. The black hole register " _ y
   10. Last search pattern register " / y
   11. http://vimdoc.sourceforge.net/htmldoc/change.html#registers
   12. https://stackoverflow.com/questions/9166328/how-to-copy-selected-lines-to-clipboard-in-vim

Fix system crash

Disable Google Chrome/Firefox hardware acceleration:

1. https://www.lifewire.com/hardware-acceleration-in-chrome-4125122
2. https://support.mozilla.org/en-US/kb/hardware-acceleration-and-windowblinds-crash
3. https://superuser.com/questions/18609/changing-firefox-tab-cycle-order
4. https://superuser.com/questions/1318336/how-to-disable-ctrlq-shortcut-in-firefox-on-linux

Add GRUB_CMDLINE_LINUX="i915.enable_rc6=0" to /etc/default/grub:

1. https://unix.stackexchange.com/questions/401746/drm-i915-resetting-chip-after-gpu-hang
2. https://askubuntu.com/questions/857123/how-to-tweak-intel-hd-graphics-on-ubuntu-16-04
3. https://bugs.freedesktop.org/show_bug.cgi?id=104522
4. https://bugs.freedesktop.org/show_bug.cgi?id=104520
5. https://bbs.archlinux.org/viewtopic.php?id=232551
6. https://forum.manjaro.org/t/i915-gpu-hang-solved/37200
7. https://bugs.freedesktop.org/show_bug.cgi?id=108614

GRUB_CMDLINE_LINUX="i915.enable_rc6=0 i915.semaphores=0"
# after changing this, run
# sudo update-grub

1. https://unix.stackexchange.com/questions/408582/how-to-disable-hardware-acceleration-in-linux
   • vim /etc/X11/xorg.conf.d/disable-gpu.conf
   • vim /etc/X11/xorg.conf.d/90-disable-gpu.conf

   Section "Extensions"
       Option "GLX" "Disable"
       Option "DRI2" "Disable"
       Option "DRI3" "Disable"
   EndSection

   • /var/log/sysinfo

   Oct 18 14:26:37 evandro-pc kernel: [309258.854944] [drm] GPU HANG: ecode 9:0:0x89b0929b, in twinkle [12478], reason: Hang on rcs0, action: reset
   Oct 18 14:26:37 evandro-pc kernel: [309258.854956] i915 0000:00:02.0: Resetting rcs0 after gpu hang
   Oct 18 14:26:38 evandro-pc kernel: [309260.071284] [drm:gen8_reset_engines [i915]] *ERROR* rcs0: reset request timeout
   Oct 18 14:26:38 evandro-pc kernel: [309260.071330] i915 0000:00:02.0: Resetting chip after gpu hang
   Oct 18 14:26:39 evandro-pc kernel: [309261.286980] [drm:gen8_reset_engines [i915]] *ERROR* rcs0: reset request timeout
   Oct 18 14:26:39 evandro-pc kernel: [309261.287024] [drm:i915_reset [i915]] *ERROR* Failed to reset chip: -5
   Oct 18 14:26:40 evandro-pc xdg-desktop-por[22547]: xdg-desktop-portal-gtk: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0.
   

Fix Skype Crash

1. Edit the standard skype start menu shortcut with Menu Editor to:

   /usr/bin/skypeforlinux %U --disable-gpu
   

2. Edit the snap start menu shortcut with Menu Editor to:

   env BAMF_DESKTOP_FILE_HINT=/var/lib/snapd/desktop/applications/skype_skypeforlinux.desktop /snap/bin/skype --disable-gpu %U
   

3. Edit the file /var/lib/snapd/desktop/applications/skype_skypeforlinux.desktop to:

   [Desktop Entry]
   X-SnapInstanceName=skype
   Name=Skype
   Comment=Skype Internet Telephony
   Exec=env BAMF_DESKTOP_FILE_HINT=/var/lib/snapd/desktop/applications/skype_skypeforlinux.desktop /snap/bin/skype --disable-gpu %U
   Icon=/snap/skype/66/meta/gui/skypeforlinux.png
   ...
   

To list all programs using a given port

sudo netstat -tulpn | grep 5060

1. https://www.cyberciti.biz/faq/what-process-has-open-linux-port/

Install Sublime Text

1. https://www.sublimetext.com/3
2. Install StudioChannel:
   1. https://github.com/evandrocoan/ITE#installation-go-to-top
   2. https://raw.githubusercontent.com/evandrocoan/StudioChannel/master/channel.json
3. https://forum.sublimetext.com/t/multiple-sublime-processes-with-different-environment/34575

Setup it to start maximized with:

1. .local/bin/
2. .local/bin/open_maximized.sh
3. .local/bin/SublimeTextMaximazed.sh

Enable hibernation

It will take you computer from 10 to 30 minutes to come out from the hibernation. To speed things up, you need to install an SSD drive of 16 or 32 GB, depending on how much memory do you use. Remember, the SWAP partition must hold all you RAM memory, including the actual virtual memory already on the SWAP partition.

1. Set swap file size to 20GG on the next step tutorial
2. https://forums.linuxmint.com/viewtopic.php?f=42&t=284100 [GUIDE] How to hibernate to a swap file in Linux Mint 19.x
3. https://forums.linuxmint.com/viewtopic.php?t=273202 How to enable hibernation with swap partion on Linux Mint 19
4. https://askubuntu.com/questions/33697/how-do-i-add-swap-after-system-installation
5. https://askubuntu.com/questions/343268/how-to-use-manual-partitioning-during-installation
6. https://www.cyberciti.biz/faq/linux-check-swap-usage-command/
7. https://askubuntu.com/questions/562153/can-swap-be-on-a-different-disk
8. https://askubuntu.com/questions/180730/how-do-i-restore-a-swap-partition-i-accidentally-deleted
9. https://www.cyberciti.biz/faq/linux-add-a-swap-file-howto/

Ubuntu 20.04 (with encrypted root partition and swap file)

1. findmnt -no UUID -T /swapfile30GB

2. sudo filefrag -v /swapfile30GB (take the first 1626112)

   Filesystem type is: ef53
   File size of /swapfile is 8589934592 (2097152 blocks of 4096 bytes)
    ext:     logical_offset:        physical_offset: length:   expected: flags:
      0:        0..    6143:    1626112..   4980735:   6144:
      1:     6144..    8191:    4982784..   4984831:   2048:    4980736:
   

3. sudo vim /etc/default/grub

   GRUB_CMDLINE_LINUX_DEFAULT="..... resume=UUID=8a45acb0-cc70-4a0d-a41c-f39e1676148f resume_offset=1626112"
   

4. sudo update-grub

5. sudo vim /etc/initramfs-tools/conf.d/resume

   RESUME=UUID=8a45acb0-cc70-4a0d-a41c-f39e1676148f resume_offset=1626112
   

6. sudo update-initramfs -c -k all

7. sudo reboot

8. sudo systemctl hibernate

9. sudo systemctl status systemd-hibernate.service

10. https://www.linuxuprising.com/2021/08/how-to-enable-hibernation-on-ubuntu.html

11. sudo vim /etc/polkit-1/localauthority/50-local.d/com.ubuntu.desktop.pkla

    [Enable hibernate in upower]
    Identity=unix-user:*
    Action=org.freedesktop.upower.hibernate
    ResultActive=yes
    
    [Enable hibernate in logind]
    Identity=unix-user:*
    Action=org.freedesktop.login1.hibernate;org.freedesktop.login1.handle-hibernate-key;org.freedesktop.login1;org.freedesktop.login1.hibernate-multiple-sessions;org.freedesktop.login1.hibernate-ignore-inhibit
    ResultActive=yes
    

12. vim ~/.local/share/applications/hibernate.desktop

    [Desktop Entry]
    Type=Application
    Name=Hibernate desktop
    GenericName=Hibernate desktop
    Comment=Enter hibernation
    NoDisplay=false
    Icon=drive-multidisk
    Exec=systemctl hibernate
    Terminal=true
    Categories=System;Utility;Settings;
    

13. sudo vim /etc/systemd/sleep.conf

    [Sleep]
    # suspend=hybrid-sleep
    SuspendMode=suspend
    SuspendState=disk
    # hibernate=hybrid-sleep
    HibernateMode=suspend
    HibernateState=disk
    

    1. sudo systemctl hybrid-sleep suspends the system both to RAM and disk, so a complete power loss does not result in lost data. This mode is also called suspend to both.
    2. sudo systemctl suspend-then-hibernate initially suspends the system to RAM and if it is not interrupted within the delay specified by HibernateDelaySec in systemd-sleep.conf(5), then the system will be woken using an RTC alarm and hibernated.
    3. https://wiki.archlinux.org/title/Power_management#Suspend_and_hibernate

Disable Suspention/Hibernation Wake Up

By default almost any device can wake up your computer. To disable this:

1. sudo apt install acpitool 1, Create the file vim /etc/systemd/system/wakeup-events.service

   [Unit]
   Description=Disable wakeup events on startup
   
   [Service]
   Type=oneshot
   ExecStart=/bin/bash /home/yourusername/scripts/wakeup-events.sh
   
   [Install]
   WantedBy=multi-user.target
   

2. And run sudo systemctl enable wakeup-events

   Created symlink /etc/systemd/system/multi-user.target.wants/wakeup-events.service → /etc/systemd/system/wakeup-events.service.
   

   1. https://forums.linuxmint.com/viewtopic.php?t=290225 - How to disable wakeup on lid open event? [SOLVED]
   2. https://unix.stackexchange.com/questions/52643/how-to-disable-auto-suspend-when-i-close-laptop-lid/52645

3. Use sudo journalctl -u systemd-logind.service -f to see login events

   dez 10 20:45:11 MOBDEV-016 systemd-logind[172521]: Lid closed.
   dez 10 20:45:16 MOBDEV-016 systemd-logind[172521]: Lid opened.
   dez 10 20:46:04 MOBDEV-016 systemd-logind[172521]: New session c1 of user root.
   dez 10 20:53:47 MOBDEV-016 systemd-logind[172521]: Power key pressed.
   dez 10 20:54:20 MOBDEV-016 systemd-logind[172521]: Operation 'sleep' finished.
   dez 10 21:02:15 MOBDEV-016 systemd-logind[172521]: Power key pressed.
   

4. Edit vim /etc/UPower/UPower.conf and set IgnoreLid=true

   1. service upower restart
   2. https://askubuntu.com/questions/15520/how-can-i-tell-ubuntu-to-do-nothing-when-i-close-my-laptop-lid

5. grep . /sys/bus/usb/devices/*/power/wakeup

   1. echo disabled > /sys/bus/usb/devices/usb8/power/wakeup

Disable systemctl power options

If you got a black screen after suspend the computer or locking the session and unlocking, you got the following problem:

1. https://ubuntuforums.org/showthread.php?t=2392824
2. https://bbs.archlinux.org/viewtopic.php?id=249053
3. the-cavalry/light-locker#126 - Painful "You'll be redirected to the unlock dialog in a few seconds" - Does it have to be there?
4. https://askubuntu.com/questions/1133341/xubuntu-18-10-light-locker-wrong-behavior

Never use dm-tool lock!

1. sudo vim /etc/systemd/logind.conf
2. sudo systemctl restart systemd-logind.service
3. Configure systemd to handle suspend. (Do not use xfce4-power-manager)

   #  This file is part of systemd.
   #
   #  systemd is free software; you can redistribute it and/or modify it
   #  under the terms of the GNU Lesser General Public License as published by
   #  the Free Software Foundation; either version 2.1 of the License, or
   #  (at your option) any later version.
   #
   # Entries in this file show the compile time defaults.
   # You can change settings by editing this file.
   # Defaults can be restored by simply deleting this file.
   #
   # See logind.conf(5) for details.
   [Login]
   HandlePowerKey=ignore
   HandleSuspendKey=ignore
   HandleHibernateKey=ignore
   HandleLidSwitch=ignore
   HandleLidSwitchExternalPower=ignore
   HandleLidSwitchDocked=ignore
   # -->
   # IdleAction=suspend
   # IdleActionSec=30min
   HandlePowerKey=suspend
   HandleSuspendKey=suspend
   HandleHibernateKey=ignore
   HandleLidSwitch=ignore
   HandleLidSwitchExternalPower=ignore
   HandleLidSwitchDocked=ignore

4. Add /usr/bin/light-locker to run on system start up (Settings -> Sessions and Start up -> Application Auto Start -> (login))
5. xfconf-query -c xfce4-session -p /general/LockCommand
6. xfconf-query -c xfce4-session -p /general/LockCommand -s "light-locker-command --lock"
7. xfconf-query -c xfce4-session -p /general/LockCommand -s ""
8. sudo apt-get install xfce4-screensaver xscreensaver
9. sudo vim /usr/bin/xflock4

   ...
   # "dm-tool switch-to-greeter" \
   # "light-locker-command --lock" \
   # Remove 'xfce4-screensaver-command' because it does not turn screen off as xscreensaver-command -lock!
   #    "xfce4-screensaver-command --lock" \
   # turn the screen off continually because xfce4-screensaver-command does not turn it off again
   # xfce4-screensaver-command --lock && { while true; do xset dpms force off; sleep 50; done; }
   
   for lock_cmd in \
       "$LOCK_CMD" \
       "xscreensaver-command -lock" \
       "gnome-screensaver-command --lock" \
       "mate-screensaver-command --lock" \
       ""
   do
   ...

Disable suspend on lock screen

1. sudo -u gdm dbus-launch gsettings set org.gnome.settings-daemon.plugins.power sleep-inactive-ac-type 'nothing'
2. https://askubuntu.com/questions/1101043/prevent-sleep-suspend-when-not-logged-in-to-a-specific-account

Turn builtin monitor on/off

1. xrandr --listmonitors (to see monitors names)
2. xrandr --output eDP-1 -off (turn eDP-1 off)
3. xrandr --output eDP-1 --auto (turn eDP-1 on)
4. https://askubuntu.com/questions/62858/turn-off-monitor-using-command-line
5. https://askubuntu.com/questions/512192/turn-monitor-back-on-after-xrandr

Extension Swap Partition/File

Instead of expanding a SWAP partition, just create a swap file instead!

1. sudo swapon --show

   NAME      TYPE      SIZE USED PRIO
   /dev/sda2 partition 1.9G   0B   -2
   

2. sudo fallocate -l 1G /swapfile
3. sudo chmod 600 /swapfile
4. sudo mkswap /swapfile
5. sudo swapon /swapfile
6. sudo nano /etc/fstab
7. And paste the following line:

   /swapfile swap swap defaults 0 0
   

8. sudo swapon --show

   NAME      TYPE  SIZE   USED PRIO
   /swapfile file 1024M 507.4M   -1
   

9. sudo free -h
10. https://linuxize.com/post/how-to-add-swap-space-on-ubuntu-18-04/

Screenkey/peek recorder

1. sudo apt install peek
2. git clone https://gitlab.com/screenkey/screenkey
3. cd screenkey
4. sudo ./setup.py install
5. screenkey; peek

ksuperkey

1. Clone and install https://github.com/hanschen/ksuperkey with make and sudo make install
2. Remove the Super+L to xfce4-popup-whiskermenu on All Settings -> Keyboard -> Applications Shortcuts and add it to Super_L|m
3. Then, run the command ksuperkey -e 'Super_L=Super_L|m' on system startup.

Enable super user account login with su:

sudo passwd root

# https://askubuntu.com/questions/20450/disable-root-account-in-ubuntu
sudo passwd -l root

Disable auto update pop up

1. sudo vim /etc/apt/apt.conf.d/99update-notifier

2. Add # in front of DPkg::Post-Invoke {"if ...

3. https://askubuntu.com/questions/218755/how-to-disable-the-update-manager-popup

4. For Ubuntu, disable the annoying daily update check:

   1. systemctl disable --now apt-daily{,-upgrade}.{timer,service}
   2. https://askubuntu.com/questions/1059971/disable-updates-from-command-line-in-ubuntu-16-04

Disable pmproxy eating 100% CPU

1. tail -F /var/log/pcp/pmproxy/pmproxy.log
2. sudo /usr/lib/pcp/bin/pmproxy stop
3. sudo apt-get install systemd
4. sudo systemctl disable pmcd.service
5. sudo systemctl disable pmlogger.service
6. sudo mv /usr/lib/pcp/bin/pmproxy{,old}
7. sudo killall -9 pmproxy
8. systemd/systemd#15928 - warn on KillMode=none, inform about left-over processes on stop and warn about sysv services
9. https://linux.die.net/man/1/pmproxy
10. https://man7.org/linux/man-pages/man1/pmproxy.1.html
11. https://man7.org/linux/man-pages/man1/pcpintro.1.html

Restart audio interface

1. pulseaudio -k && sudo alsa force-reload && sleep 2 && pulseaudio -k && sudo alsa force-reload
2. sudo killall pulseaudio && sudo alsa force-reload && sleep 2 && sudo killall pulseaudio && sudo alsa force-reload
3. https://askubuntu.com/questions/15223/how-can-i-restart-pulseaudio-without-having-to-logout

Ksysguard & others

Add ppa repositories:

sudo add-apt-repository ppa:sporkwitch/autokey &&
sudo add-apt-repository ppa:hluk/copyq &&
sudo apt update

Install stuff:

sudo apt install build-essential autokey-gtk copyq mtp-tools gmtp imwheel openssh-server;
sudo apt-get install nethogs python3 python-pip python3-pip;
sudo apt-get install audacity thunderbird ksysguard wmctrl;
sudo apt-get install xdotool grsync unison-gtk indicator-multiload;
sudo apt-get install vim vim-gtk3 ncdu nemo glogg qps nemo-fileroller;
sudo apt-get install libc6-dbg gsmartcontrol iotop fatrace;
sudo apt-get install gnome-disk-utility speedcrunch okular;
sudo apt-get install terminator thunar-archive-plugin gparted p7zip-full;
sudo apt-get install xfce4-power-manager xfce4-systemload-plugin xfce4-screenshooter;
sudo apt-get install xfce4-terminal menulibre pinta catfish moreutils;
pip install setuptools;
pip3 install setuptools;
pip install wheel;
pip3 install wheel python-language-server;

1. Never ever use GIMP! It its full of crap. Use pinta instead!
2. sudo apt-get install gnome-disks (https://askubuntu.com/questions/500549/how-to-run-gnome-disk-utility#)
3. https://www.poweriso.com/download-poweriso-for-linux.htm
4. https://remmina.org/how-to-install-remmina/
5. flameshot flameshot-org/flameshot#11 (comment)
6. terminator (to set terminator as default terminal on nemo file manager)
   1. gsettings set org.cinnamon.desktop.default-applications.terminal exec 'xfce4-terminal'
   2. linuxmint/nemo#2091
   3. https://unix.stackexchange.com/questions/86875/determining-specific-file-responsible-for-high-i-o
7. Open Preferred Applications and set mailto as thunderbird
8. Open Preferred Applications and set File Manger as nemo
9. Open KSysGuard & System Monitor and Install KSysGuard System Monitor Tabs:
   • Hard Disk Totals - https://store.kde.org/p/1198291
   • System Load and Temps - https://store.kde.org/p/1198291
10. Open Unisson & Grsync
11. Add System Load Monitor widget to the main panel
12. Create keybind , (numpad comma), autokey-run -p insert_dot
    1. https://github.com/autokey/autokey
    2. Run autokey-gtk --verbose & for debugging it
13. https://unix.stackexchange.com/questions/192048/mount-mtp-android-device-in-linux-mint-17-1
14. https://unix.stackexchange.com/questions/389952/how-to-get-the-samsung-galaxy-s5-to-work-with-mtp-on-debian-9
15. Run imwheel -b "4 5"on system start up
    1. Create ~/.imwheelrc with:
       • .imwheelrc
    2. https://wiki.archlinux.org/index.php/IMWheel
       • Use imwheel -d --debug --kill to list windows
    3. Use sudo killall -9 imwheel; sleep 2; imwheel -b "4 5" to restart the service
    4. ~https://askubuntu.com/questions/285689/increase-mouse-wheel-scroll-speed
    5. ~https://mintguide.org/other/643-setup-the-mouse-scroll-wheel-speed.html#sel=13:4,13:14
    6. Disable smooth scrolling on Google Chrome:
       • chrome://flags/#smooth-scrolling
       • https://www.ghacks.net/2016/03/16/turn-off-smooth-scrolling-google-chrome/

chroot

1. sudo apt-get install debootstrap schroot
2. Create an isolated environment with chroot (it will inherit your $HOME environment variable, etc)

   mkdir /myfiles/ubuntu_xenial_1604
   debootstrap --arch=amd64 xenial /myfiles/ubuntu_xenial_1604 http://archive.ubuntu.com/ubuntu/
   cp /usr/share/i18n/SUPPORTED /etc/locale.gen
   locale-gen
   dpkg-reconfigure locales
   apt-get install linux-headers-$(uname -r) gcc dialog unzip psmisc

3. mkdir -p /myfiles/ubuntu_xenial_1604/home/$USER/
4. Add main machine resources to chroot nested machine
   1. mkdir -p /myfiles/ubuntu_xenial_1604/proc/
   2. mkdir -p /myfiles/ubuntu_xenial_1604/sys/
   3. mkdir -p /myfiles/ubuntu_xenial_1604/dev/pts
   4. sudo mount -t proc proc /myfiles/ubuntu_xenial_1604/proc/
   5. sudo mount -t sysfs sys /myfiles/ubuntu_xenial_1604/sys/
   6. sudo mount -o bind /dev /myfiles/ubuntu_xenial_1604/dev/
   7. sudo mount -t devpts pts dev/pts/
   8. https://wiki.archlinux.org/index.php/Chroot
   9. https://unix.stackexchange.com/questions/98405/which-of-proc-sys-etc-should-be-bind-mounted
5. Or edit /etc/fstab:
   • https://askubuntu.com/questions/550348/how-to-make-mount-bind-permanent

   # <device>                             <dir>   <type>  <options>   <dump>  <pass>
   /myfiles/ubuntu_xenial_1604/proc/      /proc    auto    -t,proc       0      1
   /myfiles/ubuntu_xenial_1604/sys/       /sys     auto    -t,sysfs      0      1
   /myfiles/ubuntu_xenial_1604/dev/pts    /dev     auto    -t,devpts     0      1
   /myfiles/ubuntu_xenial_1604/dev/       /dev     auto    -o,bind       0      1

6. sudo mount --bind /usr/local/something /myfiles/ubuntu_xenial_1604/mnt/something
   • Optionally, mount something inside the new Linux
   • sudo umount /myfiles/ubuntu_xenial_1604/mnt/something
7. Generate a new list of sources and add them to the file /etc/apt/sources.list
   • https://repogen.simplylinux.ch/

   #------------------------------------------------------------------------------#
   #                            OFFICIAL UBUNTU REPOS                             #
   #------------------------------------------------------------------------------#
   
   ###### Ubuntu Main Repos
   deb http://55.archive.ubuntu.com/ubuntu/ xenial main restricted universe multiverse
   deb-src http://55.archive.ubuntu.com/ubuntu/ xenial main restricted universe multiverse
   
   ###### Ubuntu Update Repos
   deb http://55.archive.ubuntu.com/ubuntu/ xenial-security main restricted universe multiverse
   deb http://55.archive.ubuntu.com/ubuntu/ xenial-updates main restricted universe multiverse
   deb http://55.archive.ubuntu.com/ubuntu/ xenial-proposed main restricted universe multiverse
   deb http://55.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse
   deb-src http://55.archive.ubuntu.com/ubuntu/ xenial-security main restricted universe multiverse
   deb-src http://55.archive.ubuntu.com/ubuntu/ xenial-updates main restricted universe multiverse
   deb-src http://55.archive.ubuntu.com/ubuntu/ xenial-proposed main restricted universe multiverse
   deb-src http://55.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse
   
   ###### Ubuntu Partner Repo
   deb http://archive.canonical.com/ubuntu xenial partner
   deb-src http://archive.canonical.com/ubuntu xenial partner
   

8. https://help.ubuntu.com/community/BasicChroot
9. https://help.ubuntu.com/community/DebootstrapChroot

Optionally install KDE

1. 1 GB to install
   • sudo apt-get install kde-standard kwin-addons
2. 28 MB to install
   • sudo apt install budgie-desktop-environment
3. 128 MB to install
   • http://ubuntuhandbook.org/index.php/2018/11/install-cinnamon-desktop-4-0-ubuntu-18-04/
   • sudo apt-get install cinnamon-desktop-environment
   • Install applets:
     1. Cinnamenu
     2. Show desktop ++
     3. Collapsible Systray
     4. System Monitor

Hide user account from login screen

Open /var/lib/AccountsService/users/XXX and add:

[User]
SystemAccount=true

1. https://forums.linuxmint.com/viewtopic.php?t=212990

Fix teamviewer not opening anymore

1. https://www.teamviewer.com/pt-br/download/linux/
2. https://community.teamviewer.com/English/discussion/95696/teamviewer-15-stopped-working-on-debian-buster
3. https://superuser.com/questions/1563951/systemd-does-not-assign-a-seat-to-my-session-when-using-nis-authentication
4. Use systemctl edit --full systemd-logind to disable the network restrictions in systemd-logind, by removing the IPAddressDeny= and RestrictAddressFamilies= options. (And probably SystemCallFilter= as well).
   1. Reboot your computer after systemctl edit --full systemd-logind

Fix networking not connecting (after coming out from system sleep)

sudo su
history
grep 'enp1s0' /var/log/syslog
/etc/init.d/network restart
systemctl status networking.service
systemctl restart NetworkManager

ip addr flush dev wlo1
ip addr flush dev enp1s0
ifdown enp1s0
ifdown wlo1
ifup enp1s0
ifup wlo1
ip a s

# assegure vim /etc/network/interfaces com o seguinte e execute ifdown/ifup em seguida
# Verifique se a conexão está ok com `ping 8.8.8.8` ou `ping 1.1.1.1`
auto lo
iface lo inet loopback

#auto enp1s0
allow-hotplug enp1s0
iface enp1s0 inet dhcp

auto wlo1
allow-hotplug wlo1
iface wlo1 inet dhcp

1. https://routerctrl.com/ubuntu-wi-fi-connected-but-no-internet-access/
2. https://askubuntu.com/questions/293827/error-rtnetlink-answers-file-exists
3. https://raspberrypi.stackexchange.com/questions/13895/solving-rtnetlink-answers-file-exists-when-running-ifup
4. https://unix.stackexchange.com/questions/100588/using-ip-addr-instead-of-ifconfig-reports-rtnetlink-answers-file-exists-on-de

If commands like docker run -it debian:11 apt update cannot connect to internet:

sudo su
ip link delete docker0
service docker restart

1. docker/for-linux#312 - Accidently deleted docker0 bridge. How do i get docker running again?
2. https://forums.docker.com/t/network-bridge-docker0-cant-connect-to-local-network/78175
3. https://stackoverflow.com/questions/58641541/why-docker0-bridge-is-showing-down-in-a-kubernetes-cluster-with-flannel

Install remmina from snap

1. sudo snap install remmina
2. Disable snap auto updates:
   1. https://askubuntu.com/questions/930593/how-to-disable-autorefresh-in-snap
   2. sudo snap set system refresh.hold="$(date --date='today+300000 days' --iso-8601=seconds)"
   3. sudo snap set system refresh.metered=hold
   4. sudo systemctl disable snapd.service
   5. sudo vim /etc/hosts (add 127.0.0.1 api.snapcraft.io)
3. https://askubuntu.com/questions/1227585/remmina-not-receiving-audio

Run the script ~/scripts/create-remmina-desktops.sh to create .desktop icons from saved Remmina connections and edit ~/.config/menus/xfce-applications.menu with the results.

1. sudo chmod ugo+rwx "$HOME/snap/remmina/" -R

Install wine & others

1. Software Manager -> Twinkle -> Install
2. https://www.virtualbox.org/wiki/Linux_Downloads
3. http://wiki.octave.org/Octave_for_Debian_systems
4. https://wiki.winehq.org/Ubuntu
5. https://www.cockos.com/licecap/
6. https://github.com/balena-io/etcher
7. https://askubuntu.com/questions/785657/i-cant-install-gnome-schedule-on-ubuntu-16-04
8. https://askubuntu.com/questions/779946/how-do-i-install-lastfm-scrobblernewbie-at-ubuntu-stuff
9. http://www.aimp2.us/aimp3-download.php (install inside wine)
10. https://www.last.fm/about/trackmymusic?platform=windows (install inside wine)
11. https://askubuntu.com/questions/138908/how-to-execute-a-script-just-by-double-clicking-like-exe-files-in-windows
12. Wireshark
    • https://askubuntu.com/questions/700712/how-to-install-wireshark
    • https://askubuntu.com/questions/74059/how-do-i-run-wireshark-with-root-privileges
13. https://www.syntevo.com/smartgit/download/ Sometimes ignored directories are containing tracked files in which case changes to these files might not show up automatically. If this is the case for you, you may disable this optimization by setting system property 'fileMonitor.excludeIgnoredDirectories=false'.

Configure Second Monitor

1. https://www.ostechnix.com/how-to-adjust-monitor-brightness-from-command-line-in-linux/

   $ xrandr -q
   HDMI-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 510mm x 290mm
   DP-1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 510mm x 290mm
   $ xrandr --output DP-1 --brightness 0.7
   $ xrandr --output DP-1 --gamma 0.9:0.9:0.9
   

2. https://github.com/calandoa/movescreen

   ./movescreen.py right
   ./movescreen.py left
   

3. To see all current monitor settings

   • http://shallowsky.com/blog/tags/x11/

   $ xrandr --verbose
   

4. How do I save my new resolution setting with xrandr?

   • Create the $HOME/.xprofile and set it as executable chmod +x "$HOME/.xprofile":

   #!/bin/bash
   xrandr --output DP-1 --brightness 1.0
   xrandr --output DP-1 --gamma 0.85:0.85:0.85

   • https://askubuntu.com/questions/754231/how-do-i-save-my-new-resolution-setting-with-xrandr
   • https://wiki.archlinux.org/index.php/Xprofile

My old settings:

xrandr --output eDP-1 --brightness 0.6
xrandr --output eDP-1 --gamma 0.85:0.85:0.85

xrandr --output eDP-1 --brightness 0.9
xrandr --output eDP-1 --gamma 0.65:0.65:0.65

Disable line wrap

1. setterm -linewrap off
2. https://unix.stackexchange.com/questions/20493/how-to-disable-line-wrap-in-a-terminal/345492

Remove Default XFCE 4 Keybinds

1. All Settings -> Window Manger -> Keyboard ->
   • Raise Window, Alt+Shift+PgUp
   • Lower Window, Alt+Shift+PgDown

Create Default Keybinds

1. Ctrl+Alt+J, subl -n
2. Ctrl+Alt+O, gnome-calculator
3. Ctrl+Alt+H, gnome-system-monitor
4. Ctrl+Print, flameshot gui
5. .local/bin/play_stop_music.sh
   1. Pause, play_stop_music.sh space
   2. Alt+Super+Up, play_stop_music.sh Up
   3. Alt+Super+Down, play_stop_music.sh Down
   4. Alt+Super+Left, play_stop_music.sh F1
   5. Alt+Super+Right, play_stop_music.sh F2
6. Alt+Super+0, wmctrl -x -a aimp.exe.Wine
7. Alt+Super+1, wmctrl -x -a minilyrics.exe.Wine
   • To list active windows use wmctrl -lx

/home/evandro/.local/share/applications/lastfm.desktop

[Desktop Entry]
Version=1.1
Type=Application
Name=Last.fm
Comment=Listen to Last.fm radio
Icon=lastfm
Exec=wine "/home/evandro/.wine/dosdevices/c:/Program Files (x86)/Last.fm/Last.fm Scrobbler.exe"
Actions=
Categories=Audio;AudioVideo;Qt;
StartupNotify=true

/home/evandro/.local/share/applications/menulibre-aimp3.desktop

[Desktop Entry]
Version=1.1
Type=Application
Name=AIMP3
Comment=Music Player running on Wine
Icon=applications-other
Exec=wine "/home/evandro/Programs/AIMP3/AIMP.exe"
Actions=
Categories=AudioVideo;

/home/evandro/.local/share/applications/menulibre-minilyrics-wine.desktop

[Desktop Entry]
Version=1.1
Type=Application
Name=Minilyrics Wine
Comment=A small descriptive blurb about this application.
Icon=applications-other
Exec=wine "/home/evandro/.wine/dosdevices/c:/Program Files (x86)/MiniLyrics/MiniLyrics.exe"
Actions=
Categories=AudioVideo;

Linux system information

1. lshw -class disk

     *-disk:0
          description: ATA Disk
          product: WDC WD20EFRX-68E
          vendor: Western Digital
          physical id: 0
          bus info: scsi@0:0.0.0
          logical name: /dev/sda
          version: 82.0
          serial: WD-WCC4M0NJKLUP
          size: 1863GiB (2TB)
          capabilities: gpt-1.00 partitioned partitioned:gpt
          configuration: ansiversion=5 guid=3fc710f6-7e35-4a0a-9142-73a813966c3b
   

2. sudo smartctl --all /dev/nvme0n1

     smartctl 7.1 2019-12-30 r5022 [x86_64-linux-5.4.0-47-generic] (local build)
     Copyright (C) 2002-19, Bruce Allen, Christian Franke, www.smartmontools.org
   
     === START OF INFORMATION SECTION ===
     Model Number:                       CL1-3D256-Q11 NVMe SSSTC 256GB
     Serial Number:                      TW0TN2CC9DH0003I05HD
     Firmware Version:                   22301115
     PCI Vendor ID:                      0x1e95
     PCI Vendor Subsystem ID:            0x126f
     IEEE OUI Identifier:                0x38f601
     Total NVM Capacity:                 256.060.514.304 [256 GB]
     Unallocated NVM Capacity:           0
     Controller ID:                      1
     Number of Namespaces:               1
     Namespace 1 Size/Capacity:          256.060.514.304 [256 GB]
     Namespace 1 Formatted LBA Size:     512
     Namespace 1 IEEE EUI-64:            002303 56303ac67b
     Local Time is:                      Thu Feb 18 09:46:11 2021 -03
     Firmware Updates (0x14):            2 Slots, no Reset required
     Optional Admin Commands (0x0017):   Security Format Frmw_DL Self_Test
     Optional NVM Commands (0x001f):     Comp Wr_Unc DS_Mngmt Wr_Zero Sav/Sel_Feat
     Maximum Data Transfer Size:         32 Pages
     Warning  Comp. Temp. Threshold:     83 Celsius
     Critical Comp. Temp. Threshold:     85 Celsius
   
     Supported Power States
     St Op     Max   Active     Idle   RL RT WL WT  Ent_Lat  Ex_Lat
      0 +     3.50W       -        -    0  0  0  0        0       0
      1 +     2.10W       -        -    1  1  1  1        0       0
      2 +     1.65W       -        -    2  2  2  2        0       0
      3 -   0.0500W       -        -    3  3  3  3     5000    5000
      4 -   0.0050W       -        -    4  4  4  4     5000   20000
   
      Supported LBA Sizes (NSID 0x1)
      Id Fmt  Data  Metadt  Rel_Perf
       0 +     512       0         0
   
      === START OF SMART DATA SECTION ===
      SMART overall-health self-assessment test result: PASSED
   
      SMART/Health Information (NVMe Log 0x02)
      Critical Warning:                   0x00
      Temperature:                        33 Celsius
      Available Spare:                    100%
      Available Spare Threshold:          50%
      Percentage Used:                    5%
      Data Units Read:                    9.964.234 [5,10 TB]
      Data Units Written:                 8.399.441 [4,30 TB]
      Host Read Commands:                 376.884.149
      Host Write Commands:                364.516.648
      Controller Busy Time:               12.058
      Power Cycles:                       312
      Power On Hours:                     1.492
      Unsafe Shutdowns:                   62
      Media and Data Integrity Errors:    0
      Error Information Log Entries:      0
      Warning  Comp. Temperature Time:    0
      Critical Comp. Temperature Time:    0
      Temperature Sensor 1:               33 Celsius
   
      Error Information (NVMe Log 0x01, max 64 entries)
      No Errors Logged
   

3. sudo apt-get install inxi dmidecode lshw

   $ sudo lshw -short -C memory
   H/W path       Device     Class          Description
   ====================================================
   /0/0                      memory         64KiB BIOS
   /0/3d                     memory         8GiB System Memory
   /0/3d/0                   memory         8GiB DIMM DDR4 Synchronous 2400 MHz (0,4 ns)
   /0/3d/1                   memory         [empty]
   /0/3d/2                   memory         [empty]
   /0/3d/3                   memory         [empty]
   /0/43                     memory         256KiB L1 cache
   /0/44                     memory         1MiB L2 cache
   /0/45                     memory         6MiB L3 cache
   /0/100/1f.2               memory         Memory controller
   

4. sudo dmidecode --type 17

   # dmidecode 3.1
   Getting SMBIOS data from sysfs.
   SMBIOS 3.0.0 present.
   
   Handle 0x003E, DMI type 17, 40 bytes
   Memory Device
     Array Handle: 0x003D
     Error Information Handle: Not Provided
     Total Width: 64 bits
     Data Width: 64 bits
     Size: 8192 MB
     Form Factor: DIMM
     Set: None
     Locator: ChannelA-DIMM0
     Bank Locator: BANK 0
     Type: DDR4
     Type Detail: Synchronous
     Speed: 2400 MT/s
     Manufacturer: 859B
     Serial Number: E1A93CFC
     Asset Tag: 9876543210
     Part Number: BLS8G4D240FSB.16FBD2
     Rank: 2
     Configured Clock Speed: 2400 MT/s
     Minimum Voltage: 1.2 V
     Maximum Voltage: 1.2 V
     Configured Voltage: 1.2 V
   

5. sudo inxi -Fxz

   System:    Host: evandro-pc Kernel: 4.15.0-45-generic x86_64 bits: 64 compiler: gcc v: 7.3.0 Desktop: Xfce 4.12.3
              Distro: Linux Mint 19.1 Tessa base: Ubuntu 18.04 bionic
   Machine:   Type: Desktop System: Gigabyte product: H110M-S2PH v: N/A serial: <filter>
              Mobo: Gigabyte model: H110M-S2PH-CF v: x.x serial: <filter> UEFI: American Megatrends v: F21 date: 06/09/2017
   CPU:       Topology: Quad Core model: Intel Core i5-7400 bits: 64 type: MCP arch: Kaby Lake rev: 9 L2 cache: 6144 KiB
              flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 24000
              Speed: 800 MHz min/max: 800/3500 MHz Core speeds (MHz): 1: 800 2: 800 3: 800 4: 800
   Graphics:  Device-1: Intel HD Graphics 630 vendor: Gigabyte driver: i915 v: kernel bus ID: 00:02.0
              Display: x11 server: X.Org 1.19.6 driver: modesetting unloaded: fbdev,vesa resolution: 1920x1080~60Hz
              OpenGL: renderer: Mesa DRI Intel HD Graphics 630 (Kaby Lake GT2) v: 4.5 Mesa 18.2.2 direct render: Yes
   Audio:     Device-1: Intel 100 Series/C230 Series Family HD Audio vendor: Gigabyte Sunrise Point-H driver: snd_hda_intel
              v: kernel bus ID: 00:1f.3
              Sound Server: ALSA v: k4.15.0-45-generic
   Network:   Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet vendor: Gigabyte driver: r8169 v: 2.3LK-NAPI
              port: e000 bus ID: 01:00.0
              IF: enp1s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
   Drives:    Local Storage: total: 931.51 GiB used: 47.82 GiB (5.1%)
              ID-1: /dev/sda vendor: Western Digital model: WD10EZEX-00WN4A0 size: 931.51 GiB
   Partition: ID-1: / size: 907.63 GiB used: 47.81 GiB (5.3%) fs: ext4 dev: /dev/dm-0
   Sensors:   System Temperatures: cpu: 29.8 C mobo: 27.8 C
              Fan Speeds (RPM): N/A
   Info:      Processes: 236 Uptime: 1h 13m Memory: 7.68 GiB used: 4.39 GiB (57.2%) Init: systemd runlevel: 5 Compilers:
              gcc: 7.3.0 Shell: bash v: 4.4.19 inxi: 3.0.27