Users_and_Groups.txt

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Creation-Date: 2016-10-22T18:02:37+02:00

====== Users and Groups ======
Created lørdag 22 oktober 2016

**#** **List files owned by a user or group **
$ find / -group <//GROUP_NAME>//
$ find / -user <USER_NAME//>//

**# Who is logged in**
$ w

**# Who are you logged in as**
$ whoami


==== User Directories ====
**# To create the typical directories - Desktop, Document, Download etc.**
**#** **This can easily be done with **//xdg-user-dirs//
$ pacman -S xdg-user-dirs

**# Then create the directories**
$ xdg-user-dirs-update

**# To change the default directories, you can edit **//~/.config/user-dirs.dirs//


==== User management ====
**#** **To see all users : **sudo passwd -Sa
**#** **Getting UID's : **id -u //<USER_NAME>//

== Adding a user ==
**# Adding users can be done with** //useradd //**- set password after creating the user.**
	-G **= add user to additional groups**
	-m **= create a /home folder for the user**
	-s **= path to default login shell**

**# Creating the user and setting the password**
$ useradd -m -G wheel -s /bin/bash //<USER_NAME>//
$ passwd //<USER_NAME>//

== Delete user ==
**#** //-r// **removes the home directory for the user**
$ userdel -r //<USER_NAME>//

== Change login name ==
$ usermod -l //<NEW_NAME> <OLD_NAME>//

== Change home directory ==
**#** -m **creates the required folders and move the content there**
$ usermod -d ///my/new/home// -m //<USER_NAME>//

== Add user to a group ==
$ usermod -aG //<ADDITIONAL_GROUPS> <USER_NAME>//
# **Or **
$ gpasswd --add //<USER_NAME> <GROUP_NAME>//

== Remove user from a group ==
**# If the user is logged in, changes will take affect after logout**
$ gpasswd -d //<USER_NAME> <GROUP_NAME>//

== Expire password requiring them to create a new on first login ==
$ chage -d 0 //<USER_NAME>//


==== Group management ====
**#** **List groups that a user is member of **
$ groups //<USER_NAME>//

**#** **List all groups on the system **
$ cat /etc/group

**#** **Create a new group **
$ groupadd //<GROUP_NAME>//

**#** **Delete group **
$ groupdel //<GROUP_NAME>//

== User groups ==
**# Below is a list of general user groups.**
**# users can, and sometimes have to, be added to these groups without worries.** 

adm	                **# admin group, similar to wheel**
ftp                    **# access to file-server by ftp-servers**
games               **# access to some game software**
http                  **# access to files served by the HTTP server**
log                   **# access to logs in **///var/log/// 	
rfkill                 **# access to control wireless power (TX-power)**
sys                   **# access to administrate printers**
users                **# standard user group**
uucp                 **# RS-232 ports and their connected devices (old keyboard, printer, mouses etc)**
wheel               **# administration group commonly used to give access to **//sudo/su//** none is set by default**