Linux Advanced commands

#useradd- creating user account

#groupadd- used to create user groups

#gpasswd- adding members to group

#sudo cat /etc/group - to see the number of groups available

#chgrp-to change the owner of the group

chmod-used to change access permissions for file/director

Refer below file permissions

chown-To change the ownership of the file

#grep -to find the find particular file or string in a file