+.. highlight:: none
+
+Command line
+------------
+
+cmp.py
+~~~~~~
+
+Compare two files.
+
+Usage::
+
+ cmp.py file1 file2
+
+remove-old-files.py
+~~~~~~~~~~~~~~~~~~~
+
+Remove old files. It's a portable replacement for
+`find start_dir -type f -mtime +31 -delete`.
+
+Usage::
+
+ remove-old-files.py [-e] -o days start_dir
+
+Options::
+
+ -e, --empty-dirs
+ remove empty directories
+ -o days, --older days
+ remove files older than this number of days;
+ this is a required option
+
+rm.py
+~~~~~
+
+Remove files.
+
+Usage::
+
+ rm.py file1 [file2...]
+
+which.py
+~~~~~~~~
+
+Find a program in PATH and print full path to it.
+
+Usage::
+
+ which.py program