틀:List:UserManagementCommands:Details User Management Communication write, wall, mesg, mail, biff, who, w, last User adduser, useradd, passwd, deluser, userdel, chpass, chfn, chsh, usermod Group gpasswd, addgroup, groupadd, groupmod, delgroup, groupdel E.T.C Linux:User, /etc/passwd, /etc/shadow, /etc/group