chmod \- change mode chmod(1) chown \- change owner or group chown(8) crypt, encrypt, decrypt \- encode/decode crypt(1) getty \- set terminal mode getty(8) getuid, id \(mi get user identity getuid(1) init \- process control initialization init(8) newgrp \(mi change to a new group newgrp(1) passwd \(mi change login password passwd(1) passwd, group \- password and group files passwd(5) su, setlog \- substitute userid temporarily, become super-user su(8)