Added a bunch.

README.md

@@ -1,14 +1,16 @@
 # Random Linux Tips (WIP)  
   
+*This is a random collection of useful thing I came across by simply using Linux.  
+It's mostly distro-agnostic and sometimes specific for Arch- and/or pacman-based distros.*  
+  
 ### 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`  
+    - `# this is the actual code lol`  
 - Aditionally: *Anything else that might be important like additional ressources.*  
   
-    
 ### 1. Automatically clear cache.  
 - Description: Move files older than a specific amount of time from your user's ~/.cache directory to the trash.  
 - Requires: [rmtrash](https://github.com/PhrozenByte/rmtrash).  
@@ -20,33 +22,62 @@
 ### 2. Limit Systemd journal size.  
 - Description: Limit the Systemd journal to a specific size.  
 - Requires: Specific to systems using [Systemd](https://systemd.io/).  
-- How-to:  
-    - Edit `/etc/systemd/journald.conf` and change `SystemMaxUse=50M`.  
+- How-to: Edit `/etc/systemd/journald.conf` and change `SystemMaxUse=50M`.  
 - Additionally: [ArchWiki: Systemd](https://wiki.archlinux.org/title/Systemd/Journal#Journal_size_limit).  
 - Additionally: This can also be achieved using `journalctl` and be [limited by time](https://wiki.archlinux.org/title/Systemd/Journal#Clean_journal_files_manually).  
   
 ### 3. Syntax highlight for nano  
 - Description: Enable syntax highlighting for nano.
-- Requires:
+- Requires: The [nano](https://www.nano-editor.org/) editor.  
 - How-to: Edit `~/.config/nano/nanorc` or to `/etc/nanorc` and add the following.
     - `include "/usr/share/nano/*.nanorc"`.
 - Additionally: [ArchWiki: Nano](https://wiki.archlinux.org/title/Nano#Syntax_highlighting).  
   
 ### 4. Repeat a command using watch.
+- Description: Repeat and watch a command in a custom interval.  
+- Requires: The [procfs](https://gitlab.com/procps-ng/procps) package.
+- How-to: Use `watch` followed by your command.  
+    - Example: `# watch -n 1.0 "du -h -s ./$folder`  
+    - This prints the summarized size of $folder in human-readable format every second.  
+- Additionally: ---
 
 ### 5. Use sudo !!.  
+- Description: Repeat the last command using sudo.  
+- Requires: The [sudo](https://www.sudo.ws/) package.  
+- How-to: Just type `sudo !!` and the last command will be repeated using `sudo`.
+- Additionally: ---
   
 ### 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.  
+- Additionally: [ArchWiki: Core utilities](https://wiki.archlinux.org/title/Core_utilities#Preventing_data_loss).  
   
-### 7. Paccache timer  
-- Requires: A pacman-based distro and the pacman-contrib package.
+### 7. Auto-clean package cache.  
+- Description: Automatically clean the pacman package cache using paccache.
+- Requires: A [pacman-based distro](https://en.wikipedia.org/wiki/List_of_Linux_distributions#Pacman-based) and the [pacman-contrib](https://github.com/archlinux/pacman-contrib) package.
+- How-to: Enable the paccache.timer.  
+    - # systemctl enable paccache.timer  
+- Additionally: Edit the paccache.service in /usr/lib/systemd/system/ and change the command to e.g. keep the latest installed version and no uninstalled version of all packages: `ExecStart=/usr/bin/paccache -rk1 && /usr/bin/paccache -ruk0`  
   
 ### 8. Passwordless SSH  
+- Description: Connect to a device using SSH without a password.  
+- Requires:  
+- How-to:  
+    -  
+- Additionally:  
   
 ### 9. Automatically clean orphaned packages.  
-`0 20 * * * /usr/bin/pacman -Qtdq | /usr/bin/pacman -Rns -`
+- Description: Automatically remove orphaned packages.  
+- Requires: A pacman-based distribution.  
+- How-to: Add the following line to your crontab.  
+    - `0 20 * * * /usr/bin/pacman -Qtdq | /usr/bin/pacman -Rns -`  
+- Additionally: This example removes orphans everyday at 8 p. m. but the   
+  
+### 10. Automatic retrieve latest mirrors.
+- Description: Automatically retrieve the latest Arch Linux mirrors and write them to the mirrorlist.  
+- Requires: An Arch-based distro and [reflector](https://xyne.dev/projects/reflector/).  
+- How-to: Install reflector and enable the reflector.timer.  
+    - `# systemctl enable reflector.timer`  
+- Additionally: [ArchWiki](https://wiki.archlinux.org/title/Reflector#systemd_timer).