Book Movie Technology Reviews Fitness Wellness Health Tips

Book Movie Technology Reviews Fitness Wellness Health Tips

My latest and greatest tips, resources, and reads.
So much goodness all in one place!

Add user: useradd <username> Example: useradd john

Delete user: userdel <username> Example: userdel john

Change user password: passwd <username> Example: passwd john

View user information: id <username> Example: id john

Add user to group: usermod -aG <groupname> <username> Example: usermod -aG admin john

Remove user from group: gpasswd -d <username> <groupname> Example: gpasswd -d john admin

Create group: groupadd <groupname> Example: groupadd admin

Delete group: groupdel <groupname> Example: groupdel admin

View group information: getent group <groupname> Example: getent group admin

hange group name: groupmod -n <newgroupname> <oldgroupname> Example: groupmod -n administrators admin

List all users: cat /etc/passwd

List all users in a group: grep <groupname> /etc/group Example: grep admin /etc/group

Switch to another user: su - <username> Example: su - john

Change user’s home directory: usermod -d <newhomedir> <username> Example: usermod -d /home/john john

View user’s password aging information: chage -l <username> Example: chage -l john

List all shadow users: cat /etc/shadow

Show last logged in users: last

Show who is currently logged in: w