Basics

- To get a list of installed packages
  `pacman -Qqe`
  for all gtk packages
  `pacman -Qs gtk`
  for gtk version
  `pacman -Q gtk`
  
 - To get list of package information including all dependencies it needs
   `pacman -Si nodejs`
   
   
   
   
 -  downloading build files ie tar.zst
  you go to https://archlinux.org/packages/
find the package you want
in the top-right corner of the package's page, you click the download from mirror button, you do that for every package you want

- to get info of package
 `pamac info <pkg_name>`
 or 
 `yay -Si <pkg_name>`
 
 - to search repos and aur with keyword
 	`yay -Ss straw` here straw is keyword
	
- to not reinstall package use
  `yay -S --needed strawberry`
  
- to get users and group list
  https://devconnected.com/how-to-list-users-and-groups-on-linux/
  `cat /etc/passwd | cut -d: -f1`
  `cat /etc/passwd | awk -F: '{print $1}'`
  For connected users:
  `who`
  or 
  `users` for less details
  &nbsp;
  For groups
  `cat /etc/group`
  About its output
  first col is group name
  sec col : password
  3rd: group id
  4th: users in the group
  ![4c9bf833fd2ee0a0a80cfe8cf084cfb5.png](../../_resources/4c9bf833fd2ee0a0a80cfe8cf084cfb5.png)
  ![4a49dcf8534d1694db35fe11f77a674e.png](../../_resources/4a49dcf8534d1694db35fe11f77a674e.png)
- To complete remove packages
  `pacman -Rns package_name`
    The -Rns flags tell pacman to remove the packages, their configuration files (n), and their unneeded dependencies (s).
- Removing orphan package completely
      First, you need to identify the orphaned packages. This can be done using the pacman package manager with the following command:

`pacman -Qdt`



    To remove these orphaned packages, you can use the same pacman command with the remove (-R) option:

`pacman -Rns $(pacman -Qdtq)`
- When installing packages from pacman and we dont want any prompt and want the feafult in `[y/n]` then use the flag `--noconfirm`
  `pacman -s firefox --noconfirm`