Random Linux Tips (WIP)

0. Short example template.

• Description: What is this good for.
• Requires: Do you need any particular software (provide a link)?
• How-to: Straight forward description and maybe a code example.
  • Detailled description if necessary.
  • $ sudo this is the actual code lol
• Aditionally: Anything else that might be important like additional ressources.

[[TOC]]

1. Automatically clear cache.

• Description: Move files older than a specific amount of time from your user's ~/.cache directory to the trash.
• Requires: https://github.com/PhrozenByte/rmtrash.
• How-to:
  • Add the following line to your crontab using the command "crontab -e" (or EDITOR=$editor crontab -e):
  • $ 0 17 * * * /usr/bin/find ~/.cache/* -mtime +7 -exec /usr/bin/rmtrash -rf {} ;
  • This command looks at files in ~/.cache every day at 5 p.m. and moves files older than 7 days to the trash.
• Additionally: This can also be done using regular "rm" instead of "rmtrash".

2. Clean systemd journal.

https://wiki.archlinux.org/title/Systemd/Journal#Journal_size_limit
https://wiki.archlinux.org/title/Systemd/Journal#Clean_journal_files_manually

3. Syntax highlight for nano

https://wiki.archlinux.org/title/Nano#Syntax_highlighting

4. Repeat a command using watch.

5. Use sudo !!.

6. Prevent overwriting files.

• Description: Use alias for rm, cp and mv.
• How-to: Add the following alias into your ~/.bashrc.
  • Use -interactive option to get asked before overwriting files.
  • $ alias mv="mv -i"
• Additionally: Further reading in the Arch wiki.