id To list all system identifications for current user
id -gn To list the default group for current user
id -Gn To list all system groups for current user
lsuser root To list the attribute of user root
lsuser ALL To list the attributes of all users
lsuser -a ALL To list all usernames
lsuser -a HOME ALL To list the home directory of all users
lsuser -a auth1 auth2 ALL To list the authentication method for all users
lsuser -a expires ALL To list expiry date
lsuser -a account_locked ALL To check account lock status of all users
chuser -a login=true praveen To enable the user praveen
chuser -a rlogin=true username Enable user to login remotely to server
mkuser praveen Creates user si with default values in /usr/lib/security/mkuser.default
passwd To change password of current user
passwd username To change password of a user
pwdadm username To change password of a user by security (admin) member
mkuser su=false username Create user without su facility
rmuser username To remove a user
rmuser -p praveen To remove user praveen and his all attributes
who List users with tty nos and ip numbers
who /var/adm/wtmp Lists history of login logout system startup and shutdown
last root All previous login and logoff time of root user
who -r To list the current run level ( cat /etc/.init.state )
whoami show current user
who am i To list the exact user (who -m) ( ie. difference between su and su - After su shows previous username bcoz environment not set for current user and su - shows current username bcoz environment has been set)
mkgroup dcm To create the group dcm
chgroup users=user1,user2,user3 dcm To add users user1,user2 and user3 to dcm group
rmgroup dcm To delete the group dcm
chauthent To change the authentication methods
chuser unsuccessful_login_count=0 username To change the unsuccessful login count
pwdck -t ALL / Username To verify user passwords ( Report error and ask to fix it)
usrck -t ALL / Username To verify user definition.
grpck -t ALL / groupname To verify a group
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