sss_usermod 8 sss_usermod modify a user account sss_usermod options LOGIN sss_usermod modifies the account specified by LOGIN to reflect the changes that are specified on the command line. -c,--gecos COMMENT Any text string describing the user. Often used as the field for the user's full name. -h,--home HOME_DIR The home directory of the user account. -s,--shell SHELL The user's login shell. -a,--append-group GROUPS Append this user to groups specified by the GROUPS parameter. The GROUPS parameter is a comma separated list of group names. -r,--remove-group GROUPS Remove this user from groups specified by the GROUPS parameter. -l,--lock Lock the user account. The user won't be able to log in. -u,--unlock Unlock the user account. sss_groupadd8 , sss_groupdel8 , sss_groupmod8 , sss_groupshow8 , sss_useradd8 , sss_userdel8 .