Install tree if you think it would be useful to view the contents of
specified directories in a tree-like format.
-rwxr-xr-x 1 root root 52579 Sep 1 1999 /usr/bin/tree drwxr-xr-x 2 root root 0 Sep 1 1999 /usr/doc/tree-1.2 -rw-r--r-- 1 root root 806 Jan 5 1997 /usr/doc/tree-1.2/README -rwxr-xr-x 1 root root 1858 Sep 1 1999 /usr/man/man1/tree.1.gz