53 lines
2.4 KiB
Markdown
53 lines
2.4 KiB
Markdown
# Random Linux Tips (WIP)
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### 0. *Short example template.*
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- Description: *What is this good for.*
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- Requires: *Do you need any particular software (provide a link)?*
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- How-to: *Straight forward description and maybe a code example.*
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- *Detailled description if necessary.*
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- `sudo this is the actual code lol`
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- Aditionally: *Anything else that might be important like additional ressources.*
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### 1. Automatically clear cache.
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- Description: Move files older than a specific amount of time from your user's ~/.cache directory to the trash.
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- Requires: [rmtrash](https://github.com/PhrozenByte/rmtrash).
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- How-to: Add the following line to your crontab using the command "crontab -e" (or EDITOR=$editor crontab -e).
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- `0 17 * * * /usr/bin/find ~/.cache/* -mtime +7 -exec /usr/bin/rmtrash -rf {} \;`
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- This command looks at files in ~/.cache every day at 5 p.m. and moves files older than 7 days to the trash.
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- Additionally: This can also be done using regular `rm` instead of `rmtrash`.
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### 2. Limit Systemd journal size.
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- Description: Limit the Systemd journal to a specific size.
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- Requires: Specific to systems using [Systemd](https://systemd.io/).
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- How-to:
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- Edit `/etc/systemd/journald.conf` and change `SystemMaxUse=50M`.
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- Additionally: [ArchWiki: Systemd](https://wiki.archlinux.org/title/Systemd/Journal#Journal_size_limit).
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- Additionally: This can also be achieved using `journalctl` and be [limited by time](https://wiki.archlinux.org/title/Systemd/Journal#Clean_journal_files_manually).
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### 3. Syntax highlight for nano
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- Description: Enable syntax highlighting for nano.
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- Requires:
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- How-to: Edit `~/.config/nano/nanorc` or to `/etc/nanorc` and add the following.
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- `include "/usr/share/nano/*.nanorc"`.
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- Additionally: [ArchWiki: Nano](https://wiki.archlinux.org/title/Nano#Syntax_highlighting).
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### 4. Repeat a command using watch.
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### 5. Use sudo !!.
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### 6. Prevent overwriting files.
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- Description: Use alias for *rm*, *cp* and *mv*.
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- How-to: Add the following alias into your ~/.bashrc.
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- Use *-interactive* option to get asked before overwriting files.
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- `alias mv="mv -i"`
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- Additionally: Further reading in the Arch wiki.
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### 7. Paccache timer
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- Requires: A pacman-based distro and the pacman-contrib package.
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### 8. Passwordless SSH
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### 9. Automatically clean orphaned packages.
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`0 20 * * * /usr/bin/pacman -Qtdq | /usr/bin/pacman -Rns -`
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