Sash is a separate case used for system recovery in Linux. Its use is to make system recovery possible in many cases where they have lost common libraries or executables. It does this by initially being connected numerically and secondly by including versions of many other regular utilities within itself. Some of these included instructions are chattr, chmod, chown, cp, dd, ed, find, grep, gzip, ln, ls, mkdir, mknod, more, mount, mv, rm, and tar.