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backup_microg_lineageos

!/bin/bash

export GITHUB_TOKEN=github_pat_11A


myArray=("sailfish" "walleye" "taimen" "blueline" "sargo")
for str in ${myArray[@]}; do
  echo $str
  #github-release release --user $USER --repo backup_microg_lineageos --tag $str



github-release release --user $USER --repo backup_microg_lineageos --tag $str
rm -fr download.lineage.microg.org
wget -r -l1 --no-parent https://download.lineage.microg.org/$str
cd download.lineage.microg.org/$str
for i in `ls line*`
do     
echo $i
github-release upload --user $USER \
   --repo backup_microg_lineageos \
   --tag $str  \
   --name  $i --file  $i
sleep 10
done

done



Rename

  • To rename all files so that they are compatible with FAT32
find ./DIRECTORY -maxdepth 1  -exec rename -n 's/[^[:ascii:]]/_/g' {} \;

ChromeOS

subtitles player

Enable developer mode

Mount the flex SSD in a linux device (or USB boot).

sudo fdisk -l to identify the EFI System partition for example /dev/sdb12. Then mount that partition.

Edit file grub.cfg and add cros_debug to the various options

Saved the grub.cfg file

For meltdown/spectre add kvm-intel.vmentry_l1d_flush=always to the kernel command line the same way you added cros_debug to enable some software mitigations.

Chromebook writable root

First make sure your machine is set to developer mode and then reboot to apply any pending updates.

Execute the following to remove the root FS verification:

sudo /usr/share/vboot/bin/make_dev_ssd.sh --remove_rootfs_verification

The command will fail with a warning and tell you to run the same command with --partitions 4 flag at the end where 4 can be any number. Run the command again with the new flag.

Then set the following variable:

sudo crossystem dev_boot_signed_only=0

Then remount your root FS with:

sudo mount -o remount,rw /

References:

https://www.reddit.com/r/ChromeOSFlex/comments/swxlz8/tutorial_enable_developer_mode_on_cros

https://www.reddit.com/r/chromeos/comments/stl9fq/enabled_developer_mode_on_chromeos_flex_by/

https://old.reddit.com/r/ChromeOSFlex/comments/w3ehw7/fixing_audio_on_bay_trail_chromebooks/

https://xn--1ca.se/chromebook-writable-root/

systemd suspend modules

#!/bin/bash

# Put into /lib/systemd/system-sleep/suspend-modules
# chmod a+x /lib/systemd/system-sleep/suspend-modules

# Unloads kernel modules defined in /etc/suspend-modules.d/*.conf
# and /etc/suspend-modules
# with one module per line

# Too see credits, see git history
# https://gist.github.com/sigboe/2602f9318b8f55ca92c7755a5b70644d/edit

case $1 in
    pre)
        for mod in $(cat /etc/suspend-modules 2> /dev/null; awk 1 /etc/suspend-modules.d/*.conf 2> /dev/null); do
            rmmod $mod
        done
    ;;
    post)
        for mod in $(cat /etc/suspend-modules 2> /dev/null; awk 1 /etc/suspend-modules.d/*.conf 2> /dev/null); do
            modprobe $mod
        done
    ;;
esac

ddcutil

  • The following command changes the Brightness and Contrast inside the external monitor, respectively.
root@linux:~# ddcutil getvcp 10
VCP code 0x10 (Brightness                    ): current value =    40, max value =   100
root@linux:~# ddcutil capabilities | grep "Brightness\|Contrast"
   Feature: 10 (Brightness)
   Feature: 12 (Contrast)
  • ddcutil setvcp 10 40
  • ddcutil setvcp 12 40

Chromium packages

Android

  • OTAs are downloaded is android.googleapis.com ota.googlezip.net

Gphotos Sync

  • pip3 install --force-reinstall gphotos-sync
  • Edit .local/lib/python3.9/site-packages/gphotos/GooglePhotosIndex.py
-       "Indexed %d %s", self.files_indexed, media_item.relative_path
+       "https://photos.google.com/lr/photo/%s %s", media_item.id, media_item.filename

PDF

Annotations

fstrim

cat /etc/crypttab 
# <target name>	<source device>		<key file>	<options>
home  UUID=783989fd-d44c-4e49-9287-a6ede15d7e13  none  luks,discard,no-read-workqueue,no-write-workqueue
  • Enable
# cryptsetup --perf-no_read_workqueue --perf-no_write_workqueue --allow-discards --persistent  refresh home
  • Verify
# cryptsetup luksDump  /dev/nvme0n1p4 | grep Flags
Flags:       	allow-discards no-read-workqueue no-write-workqueue
# dmsetup table 
home: 0 905183232 crypt aes-xts-plain64 :64:logon:cryptsetup:56a88c26-0843-4be9-b333-d79a1209c166 0 259:4 32768 3 allow_discards no_read_workqueue no_write_workqueue

Xresources

  • lower numbers make fonts small (hard to read)
  • For a 14 inch screen 135 is good
  • Edit .Xresources
Xft.dpi: 135
Size dpi
14 135
17 128

List only security updates

apt-get --just-print upgrade | grep -i security   | awk '{print $2}'

YouTube autoplay disable

https://raw.githubusercontent.com/DandelionSprout/adfilt/master/StopAutoplayOnYouTube.txt

solokey

solo key version
4.0.0 locked
  • solo key wink
  • solo key update
  • solo key update
Wrote temporary copy of firmware-4.1.5.json to /tmp/tmp7tfs8v2f.json
sha256sums coincide: f36bb365bfddf75004f28af392ae1439192ca0ed821ef496084a75a00d05087a
using signature version >2.5.3
erasing firmware...
updated firmware 100%             
time: 9.24 s
bootloader is verifying signature...
...pass!

Congratulations, your key was updated to the latest firmware version: 4.1.5

fsarchiver

#fsarchiver savefs /home/user/FSARCHIVER/10.01.2022-nvme0n1p2-root.fsa /dev/nvme0n1p2 -s 900 --exclude=/snap --exclude="/home/*" --exclude='/media' --exclude='/var/lib/lxd/*' --exclude='/tmp/*' --exclude='/var/lib/snapd/*' -A -v

Email encoder

Google cloud

optional

Cloudready

sudo dd if=cloudready.bin of=/dev/sdX bs=4M

  • If you add this to Ventoy rename the image to .img

  • Commandline installation

Ctrl+Alt+T or Ctrl+Alt+F2

  • You'll need to log in - use the username: chronos and the password: chrome

  • sudo fdisk -l | grep mmc\|sda

  • Install

cd /usr/sbin
sudo chromeos-install --dst /dev/sdX 
or
sudo chromeos-install --skip_src_removable --dst /dev/sdX

Disable auto update of secureboot keys

  • check for secureboot

mokutil --sb-state

systemctl stop secureboot-db.service
systemctl disable secureboot-db.service
journalctl -o short-precise -b -u secureboot-db.service

test for hibernate

user@laptop: ~ $ busctl call org.freedesktop.login1 /org/freedesktop/login1 org.freedesktop.login1.Manager CanHibernate

the result

s yes

yt-dlp

yt-dlp -f 'w[ext=mp4]'

yt-dlp --min-sleep-interval 2 --max-sleep-interval 4 -f 'b' -S 'filesize~100M'

subsync

/snap/bin/subsync -c sync -s old_subtitle.srt -r input.mp4 --ref-lang eng --sub-lang=eng --ref-stream-by-type=audio --out corrected_subtitle.srt

Gcloud

curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -

Fdroid repos

https://github.com/bmrz2019/foxy-droid/releases/download/v1.5/foxy-droid-debug.apk

Sony SRS XB20

Reset: With the speaker turned on, press and hold the – (volume) button and the Power button at the same time for more than 5 seconds until the speaker turns off.

inxi

inxi -Fxxrzc0

RSS podcasts

wget   https://example.com/something.rss
xmlstarlet sel -t -v "//media:content/@url"  something.rss| grep mp3  |  sed -e 's/?.*//' > list
wget --random-wait --wait 120 --no-clobber -i list

encfs

sudo apt install encfs
encfs ~/.encrypted ~/visible
fusermount -u ~/visible

SBH24 Stereo Bluetooth

Multi function key ⏯️
Short press Answer incoming/end calls
Short press Play or pause the current track
Long press 7 seconds to: Enter pairing mode.
Double tap Skip to the next music track
Triple tap Return to the previous music track
LED Green Orange Red
Battery 85% or more 15% - 85% 15% or less

To perform a factory reset on your headset

  1. Connect your headset to a power source.
  2. Turn your headset.
  3. Long press for approximately 5 seconds.
  4. The LED indicator will flash twice in orange

Samba

root@host:~# service smbd restart
root@host:~# netstat -apn | grep 445
tcp        0      0 127.0.0.1:445           0.0.0.0:*               LISTEN      13390/smbd      
tcp        0      0 a.b.c.d:445        0.0.0.0:*               LISTEN      13390/smbd      
tcp        0      0 10.147.20.1:445         0.0.0.0:*               LISTEN      13390/smbd      
tcp        0      0 a.b.c.d:445        a.b.c.55:3029       TIME_WAIT   -               
tcp        0      0 a.b.c.d:445        a.b.c.44:35502      FIN_WAIT2   -               
tcp        0      0 a.b.c.d:445        a.b.c.55:3031       ESTABLISHED 13395/smbd      
tcp6       0      0 ::1:445                 :::*                    LISTEN      13390/smbd      
unix  2      [ ACC ]     STREAM     LISTENING     22445    1/init              /run/snapd.socket
root@host:~# netstat -apn | grep 445
tcp        0      0 127.0.0.1:445           0.0.0.0:*               LISTEN      13390/smbd      
tcp        0      0 a.b.c.d:445        0.0.0.0:*               LISTEN      13390/smbd      
tcp        0      0 10.147.20.1:445         0.0.0.0:*               LISTEN      13390/smbd      
tcp        0      0 a.b.c.d:445        a.b.c.55:3029       TIME_WAIT   -               
tcp        0      0 a.b.c.d:445        a.b.c.44:35502      FIN_WAIT2   -               
tcp        0      0 a.b.c.d:445        a.b.c.55:3031       ESTABLISHED 13395/smbd      
tcp6       0      0 ::1:445                 :::*                    LISTEN      13390/smbd      
unix  2      [ ACC ]     STREAM     LISTENING     22445    1/init              /run/snapd.socket
root@host:~# ps axf | grep smbd
13405 pts/3    S+     0:00  |                   \_ grep --color=auto smbd
13236 ?        Ss     0:00      \_ /usr/sbin/smbd -D
13239 ?        S      0:00          \_ /usr/sbin/smbd -D
13244 ?        S      0:00          \_ /usr/sbin/smbd -D
13390 ?        Ss     0:00 /usr/sbin/smbd -D
13391 ?        S      0:00  \_ /usr/sbin/smbd -D
13393 ?        S      0:00  \_ /usr/sbin/smbd -D
13395 ?        S      0:00  \_ /usr/sbin/smbd -D

If you run samba server in both lxd-containers and the lxd-host then you may run to smb starting problems in host. Edit file /etc/init.d/smbd

diff --git a/smbd b/smbd
index b6ec38f..1e92d8e 100755
--- a/smbd
+++ b/smbd
@@ -37,7 +37,7 @@ case $1 in
      # Make sure we have our PIDDIR, even if it's on a tmpfs
      install -o root -g root -m 755 -d $PIDDIR

-     if ! start-stop-daemon --start --quiet --oknodo --exec /usr/sbin/smbd -- -D; then
+      if ! start-stop-daemon --start --quiet --oknodo --pidfile /var/run/samba/smbd.pid --exec /usr/sbin/smbd -- -D; then

         log_end_msg 1
         exit 1

Verify with

root@host:~# ps -ef | grep smbd
100000   13236 12434  0 09:29 ?        00:00:00 /usr/sbin/smbd -D
100000   13239 13236  0 09:29 ?        00:00:00 /usr/sbin/smbd -D
100000   13244 13236  0 09:29 ?        00:00:00 /usr/sbin/smbd -D
root     13390     1  0 09:30 ?        00:00:00 /usr/sbin/smbd -D
root     13391 13390  0 09:30 ?        00:00:00 /usr/sbin/smbd -D
root     13393 13390  0 09:30 ?        00:00:00 /usr/sbin/smbd -D
root     13395 13390  0 09:30 ?        00:00:00 /usr/sbin/smbd -D
root     13435 11720  0 09:35 pts/3    00:00:00 grep --color=auto smbd

Firefox

from https://news.ycombinator.com/item?id=16497642

For privacy, on a linux box are there any downsides to simply creating one or more extra accounts, and running Firefox in them for privacy ('DISPLAY=:0 firefox')?. I use this approach to set up firefox as I like it on a spare account, then copy '.mozilla' to '.mozilla-base'. Then it's just a simple case of 'su -l guest' and (via a script) 'rm -fr ~/.mozilla; cp -a ~/.mozilla_base .mozilla; DISPLAY=:0 firefox; rm -fr ~/.mozilla' (actually the script deletes the local cache as well). Net effect is that firefox starts exactly as I like, but forgets everything that happened in the session ('groundhog-day mode').

Edit: added 'su -l' step.

Edit: As an adendum, note that this technique can be extended to the complete 'guest' accounts as well, e.g. 'cd /home; rm -fr guest; cp -a guest.base guest; su -l guest'; the entire 'guest' account is then 'groundhog-dayed'.

  #!/bin/sh
  #
  export DISPLAY=:0
  # Set up clean copy
  cd ~
  rm -fr .mozilla
  cp -a .mozilla_base .mozilla
  cd - > /dev/null
  #
  /usr/local/bin/firefox $@
  #
  echo "Holding...."
  sleep 2
  echo "Cleaning...."
  # Clean out junk (so we start clean next time)
  cd ~
  rm -fr .mozilla .cache/mozilla*
  rm -fr .adobe
  rm -fr .macromedia
  cd - > /dev/null

alternate option

    firejail --jail /tmp/firefox /usr/local/bin/firefox

Block ads

http://someonewhocares.org/hosts/

http://pgl.yoyo.org/adservers/serverlist.php?hostformat=dnsmasq-server&showintro=1&mimetype=plaintext

https://github.com/StevenBlack/hosts

Grub reinstallation mainly on ubuntu.

Boot with sysrescuecd. If the root is at sda2 then do the following

mkdir /mnt/2
mount /dev/sda2 /mnt/2
mount -o bind /dev /mnt/2/dev
mount -o bind /sys /mnt/2/sys
mount -t proc /proc /mnt/2/proc

Now you should be able to

chroot /mnt/2 bash

If there was no bash installed on the 'failed' OS, the use

chroot /mnt/2 /sbin/sh

Now time to reinstall grub.

grub-install /dev/sda

You can try a update-grub

Clone your favorite OS

sfdisk -d /dev/sda
sfdisk -d /dev/sda > /tmp/backup-partition-file-sda.bak

To restore to a new drive

sfdisk /dev/sdb < /tmp/backup-partition-file-sda.bak

To directly copy to a new disk

sfdisk -d /dev/sda | sfdisk /dev/sdb

If you need to backup bootsector/MBR. I do not know why and which command works but running these sucessively made it work. This works only if both disks have same size and partitions. (May be they can be smaller?)

dd if=/dev/sda of=/dev/sdb bs=512 count=1
dd if=/dev/sda of=/dev/sdb bs=512 count=63

LXD

lxc config device set megasyn-vm  root  size 10GB
lxc config set myn-vm limits.memory 512MB
lxc config set rea-vm3 limits.cpu 1
lxc config set rea-vm3 boot.autostart 1
lxc config set remotus boot.autostart.delay  30
lxc config set core.trust_password a_long_string_may_be
lxc config set core.https_address "[::]:8443"
sudo lxd-p2c https://destination.ip:8443 new-container-name /

Changing your storage pool

lxc storage list
lxc profile device add default root disk path=/ pool=default

Minimal image

lxc remote add --protocol simplestreams ubuntu-minimal https://cloud-images.ubuntu.com/minimal/releases/
lxc launch ubuntu-minimal:xenial
lxc launch ubuntu-minimal:xenial -t t2.nano

For a list see https://github.com/dustinkirkland/instance-type/blob/master/tab/aws

How to setup LXD

sudo apt-get install bridge-utils
sudo lxd init
Name of the storage backend to use (dir or zfs): dir
Would you like LXD to be available over the network (yes/no)? yes
Do you want to configure the LXD bridge (yes/no)? yes
Would you like to setup a network bridge for LXD containers now? no  
Do you want to use an existing bridge? yes  
Bridge interface name:  br0

Setup enable packet forwarding in file /etc/sysctl.conf for IPv4 on the LXD host

net.ipv4.ip_forward=1

Run sudo sysctl -p or reboot. Now change the adapt ths file describes the network /etc/network/interfaces in host for static to bridge br0 changes

root@mg50:~# cat /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

source /etc/network/interfaces.d/*

# The loopback network interface
auto lo
iface lo inet loopback

auto br0
iface br0 inet static
   address bare.metal.host.ip
   netmask 255.255.255.224
   network a.b.c.d
   gateway a.b.c.d
   dns-nameservers a.b.c.d
   dns-search host.domain
   bridge_ports eno1


auto br1
iface br1 inet manual
    bridge_ports enxlkldkflkdkfj

Verify before restarting network as you lose connection

ip addr flush eno1 &&  ip addr flush enxlkldkflkdkfj  && systemctl restart networking.service

If everything was OK, you will see br0´, eth0 or enp2s0andlowhen you runifconfig` like this (redacted partially)

br0       Link encap:Ethernet  HWaddr 00:
          collisions:0 txqueuelen:1000 
          RX bytes:417554630 (417.5 MB)  TX bytes:8047958 (8.0 MB)

br1    Link encap:Ethernet  HWaddr 00:
          RX bytes:744425912 (744.4 MB)  TX bytes:14523858 (14.5 MB)


eno1      Link encap:Ethernet  HWaddr d4::::::


enx0022cf932bbc Link encap:Ethernet  HWaddr 00:2::::::  


lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          RX bytes:11840 (11.8 KB)  TX bytes:11840 (11.8 KB)

IIRC, lxc profile show default shows

config:
  environment.http_proxy: ""
  user.network_mode: ""
description: Default LXD profile
devices:
  eth0:
    name: eth0
    nictype: bridged
    parent: br1
    type: nic
  root:
    path: /
    pool: default
    type: disk
name: default
used_by:
- /1.0/containers/climbing-crow

Time to create, launch containers. The first time it takes long to download, may be unzip and launch containers.

Creating host222xenial
Starting host222xenial

Let see what is running

lxc list
+---------------+---------+--------------------------------+------+------------+-----------+
|     NAME      |  STATE  |              IPV4              | IPV6 |    TYPE    | SNAPSHOTS |
+---------------+---------+--------------------------------+------+------------+-----------+
| host222xenial | RUNNING |                                |      | PERSISTENT | 0         |
+---------------+---------+--------------------------------+------+------------+-----------+

As you see above it did not get a IPV4 address. To do that sudo lxc exec host222xenial bash will log you inside host222xenial. Do not edit /etc/network/interfaces but edit /etc/network/interfaces.d/50-cloud-init.cfg

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp

Change it to give static ip, gateway, DNS. For some reason, the containers always have eth0 and not the persistent enp* naming scheme. Verify with a dmesg if needed.

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface of the container
auto eth0
iface eth0 inet static
   address 1.2.3.222
   netmask 255.255.255.240
   network 1.2.3.112
   broadcast 1.2.3.127
   gateway 1.2.3.126
   # dns-* options are implemented by the resolvconf package, if installed
   dns-nameservers 8.8.8.8 4.4.4.4

Either restart container or may be you can reload networking sudo lxc restart host222xenial

Let see what is running

lxc list
+---------------+---------+--------------------------------+------+------------+-----------+
|     NAME      |  STATE  |              IPV4              | IPV6 |    TYPE    | SNAPSHOTS |
+---------------+---------+--------------------------------+------+------------+-----------+
| host222xenial | RUNNING |       1.2.3.222                |      | PERSISTENT | 0         |
+---------------+---------+--------------------------------+------+------------+-----------+

To rename host use lxc move host222xenial host444xenial

To launch centos sudo lxc launch images:centos/7/amd64 centos333

To launch trusty sudo lxc launch ubuntu:trusty host222

If you need screen inside a container then use

lxc exec host222xenial -- sh -c "exec >/dev/tty 2>/dev/tty </dev/tty && /usr/bin/screen -s /bin/bash"

Tips

for enabling softkeys in android phone just add

qemu.hw.mainkeys=0
to /system/build.prop

ZFS

install ubuntu

sudo apt install zfs zfs-dkms zfs-zed zfs-initramfs zfsutils-linux zfsutils-linux

commands

sudo zpool create data2 /dev/sdc
#ls --color=never -lh /dev/disk/by-id/
sudo zpool create data2 ata-ST4000DM003-1ER162_AAAAAAAL
sudo zpool status zpool
sudo zfs get all zpool
zfs create <nameofzpool>/<nameofdataset>
sudo zfs set compression=lz4 mypool
sudo zfs get compressratio
sudo zfs list
sudo zfs get used,compressratio,compression,logicalused
chown -R user.user /nameofzpool/datasets

commands

find  .  -type f \( -name '*.img' -o -name '*.mccd' -o -name '*.cbf' \) -print0 | xargs -0 gzip -v --best

function jgrep()
{
    find . -name .repo -prune -o -name .git -prune -o  -type f -name "*\.java" -print0 | xargs -0 grep --color -n "$@"
}

function cgrep()
{
    find . -name .repo -prune -o -name .git -prune -o -type f \( -name '*.c' -o -name '*.cc' -o -name '*.cpp' -o -name '*.h' \) -print0 | xargs -0 grep --color -n "$@"
}

resgrep () 
{ 
    for dir in `find . -type d \( -not -name "values-*" -a -not -name "mipmap*" -a -not -name "drawable-*" -a -not -name "." \)`;
    do
        find $dir -type f -name '*\.xml' -exec grep --color -n "$@" {} +;
    done
}

function mangrep()
{
    find . -name .repo -prune -o -name .git -prune -o -path ./out -prune -o -type f -name 'AndroidManifest.xml' -print0 | xargs -0 grep --color -n "$@"
}

function sgrep()
{
    find . -name .repo -prune -o -name .git -prune -o  -type f -iregex '.*\.\(c\|h\|cpp\|S\|java\|xml\|sh\|mk\)' -print0 | xargs -0 grep --color -n "$@"
}

function mgrep()
{
    find . -name .repo -prune -o -name .git -prune -o -path ./out -prune -o -regextype posix-egrep -iregex '(.*\/Makefile|.*\/Makefile\..*|.*\.make|.*\.mak|.*\.mk)' -type f -print0 | xargs -0 grep --color -n "$@"
}

function treegrep()
{
    find . -name .repo -prune -o -name .git -prune -o -regextype posix-egrep -iregex '.*\.(c|h|cpp|S|java|xml)' -type f -print0 | xargs -0 grep --color -n -i "$@"
}

function findfile()
{
    find . -name .repo -prune -o -name .git -prune -o -path ./out -prune -o -type f -iname "$@"| grep -v ".git" | grep -v ".repo"
}

function finddir()
{
    find . -name .repo -prune -o -name .git -prune -o -path ./out -prune -o -type d -iname "$@"| grep -v ".git" | grep -v ".repo"
}