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Users & Permissions

Users and groups

ViewList theall groups and users in a group groups

groupsgetent GROUP_NAMEgroup

Add a user to a group 

sudo adduser username groupname

which is the same as 

sudo usermod -aG groupname username

Create a new user 

sudo useradd -options_here username

Options available:

  • m = create home directory

Permissions

To see if a particular user can run a command sudo -u USER COMMAND

To change a folders permission sudo chmod -R u+rwx,g+rwx,o-rwx /path/to_folder OR sudo chown -R NEW_USER:NEW_GROUP FOLDER_NAME

-R = recursive

 Note: user or group can be left blank

Passwords

To change the curretly logged in user's password passwd 

To change a different users password sudo passwd USERNAME

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