Tips:Dev Tools

Table of Contents

[Last generated: Tue 28 Nov 2023 14:57:32 EST]

• 1. Git:
  • 1.1 A better Git Graph:
• 2. Linux:
  • 2.1 Frequently Used:
  • 2.2 Docker:
  • 2.3 Environment container comparison:
  • 2.4 Network:
    • 2.4.1 File Server - Samba
      • 2.4.1.a Add network share folder
      • 2.4.1.b Set User and password
    • 2.4.2 Network Firewalls:
    • 2.4.3 Wake-On-LAN:

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1. Git:

• For introduction, please read [Documentation/Coding-Guidelines.md]

1.1 A better Git Graph:

• Now comes free with uwarl_robot-config , via $ git_log

$ git config --global alias.lg "log --graph --pretty=tformat:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold blue)<%an>%Creset' --abbrev-commit --decorate=full"

# >>>> Better than `$ git log`:
### Now, you can use:
$ git lg 
### OR, with line changes:
$ git lg -p

2. Linux:

2.1 Frequently Used:

1. $ uname -r: OS check
2. $ cat /prov/version_signature: identify kernel
3. $ arp -a : Scan Local Network Devices and IPs
4. $ tree -L 1: list hierarchy of directory in depth=1

2.2 Docker:

• containerizing application with all dependencies without users to manually setup the environment

• available in all OS

• encapsulates the entire OS, so you can swap out the entire OS

• DOC: https://docs.docker.com/engine/

2.3 Environment container comparison:

Tool Name	Intro	Pro	Con
Docker	encapsulate OS environment	run the same OS on different OS platform	Huge
pyenv	python version manager	-	-
virtualenv	to encapsulate python dependencies	switching different python with different python packages with an ease	stuck with host OS
Anaconda	to maintain python virtualenv + additional sci-lib	Easier to work with	large packages
Vagrant	to provision a machine with an OS	Offer higher degree of isolation than Docker, and runs as isolated processes within the host OS	Heavier, larger and longer time to build

📓 [Isolation Level]: pyenv < virtualenv <= Anaconda < Docker < Vagrant

2.4 Network:

2.4.1 File Server - Samba

2.4.1.a Add network share folder

• Add folders to network share:

$. sudo vim /etc/samba/smb.conf

## edit with:
[sambashare]
   comment = Samba on ubuntu
   path = /home/jx/samba_share
   read only = no
   browsable = yes
   guest ok = no

[vinsanalysis]
   comment = vins analysis results
   path = /home/jx/UWARL_catkin_ws/src/vins-research-pkg/research-project/output/vins_analysis
   read only = no
   browsable = yes
   guest ok = no

• restart service:

$ sudo systemctl restart smbd.service

2.4.1.b Set User and password

$ sudo smbpasswd -a jx

2.4.2 Network Firewalls:

• check your network security:

$ sudo ufw status numbered  

### OUTPUT:
Status: active

     To                         Action      From
     --                         ------      ----
[ 1] 3389                       ALLOW IN    Anywhere
[ 2] 22                         ALLOW IN    Anywhere
[ 3] Samba                      ALLOW IN    Anywhere
...

• This is important to protect your Linux Desktop from malicious attack

2.4.3 Wake-On-LAN:

• Activate your PC to enable wake-on-lan feature
• Use ifconfig to find your network IP at ethernet port and its assigned MAC address
• evoke to wake from other PC: $ wakeonlan -i 192.x.x.x xx:xx:xx:xx:xx:xx

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