Linux advance 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

