How to add user

How to add user

1. Check an user exists

   $ cat /etc/passwd | grep testuser
   

2. Set home directory and shell env
   • Ubuntu, SUSE

     $ useradd <username> -m -s /bin/bash
     

     -> -m option should be declared to make home directory -> -s /bin/bash option should be declared set shell env

   • CentOS

     $ useradd <username>
     

     -> CentOS or Redhat linux don’t need to option for home directory and shell env

3. Make user with giving a group

   $ useradd <username> -G <groupname>
   

4. Make user with UID An UID is number

   $ useradd <username> -u <uid>