16.3.2 Access permission tests

These options test for particular access permissions.

‘-g file’

True if file exists and has its set-group-ID bit set.

‘-k file’

True if file exists and has its sticky bit set.

‘-r file’

True if file exists and read permission is granted.

‘-u file’

True if file exists and has its set-user-ID bit set.

‘-w file’

True if file exists and write permission is granted.

‘-x file’

True if file exists and execute permission is granted (or search permission, if it is a directory).

‘-O file’

True if file exists and is owned by the current effective user ID.

‘-G file’

True if file exists and is owned by the current effective group ID.