Linux Users

List users

$ cat /etc/passwd | grep "/home"

Beena:x:500:500:Beena Emerson:/home/Beena:/bin/bash

Only list names:

$ cat /etc/passwd |grep /bin/bash |grep [5-9][0-9][0-9] |cut -d: -f1

Beena

Add New User

You have to be root user to be able to add new users.

# useradd test_user

# cat /etc/passwd |grep /bin/bash |grep [5-9][0-9][0-9] |cut -d: -f1

Beena

test_user

Switch Users:

# su test_user

[test_user@localhost ~]$

Add Password

# passwd test_user

Changing password for user test_user.

New password:

Retype new password:

passwd: all authentication tokens updated successfully.

Delete User

# userdel test_user

# cat /etc/passwd |grep /bin/bash |grep [5-9][0-9][0-9] |cut -d: -f1

Beena