Command summary for file and system security

The following are commands for file system and security.

Item Description
acledit Edits the access control information of a file
aclget Displays the access control information of a file
aclput Sets the access control information of a file
chmod Changes permission modes
chown Changes the user associated with a file
lock Reserves a terminal
lsgroup Displays the attributes of groups
xlock Locks the local X display until a password is entered