Elaborate 'show' command with indentation of level.
tree737f084041f71ce7f8a11e589b8b8692ad96afa4
-rw-r--r-- 27 .gitignore
-rw-r--r-- 188 Makefile
drwxr-xr-x - assurance
-rwxr-xr-x 345 asure
-rw-r--r-- 1321 t_scan.py