Menambahkan User dan Group pada Centos

Add User :

# useradd --home /home/kusdi kusdi

change Password :

# passwd kusdi
Changing password for user kusdi.
New password:            
Retype new password:           


Delete User  :

#userdel kusdi


Create Group :

#groupadd jin_system

menambahkan user yang sudah ada kedalam group jin_system :

#usermod -G jin_system kusdi
atau
#usermod -G jin_system,jin kusdi

cara menghapus group :
#groupdel jin_system

ket :
-g Group ID for the group, which must be unique and greater than 499
-r Create a system group with a GID less than 500
-f When used with -g<gid> and <gid> already exists, groupadd will choose another unique <gid> for the group.