+Remove files or directories. Ask interactively to remove read-only files or
+directories.
+
+Usage::
+
+ rm.py [-r] [-f] name1 [name2...]
+
+Options::
+
+ -r, --recursive
+ recursively remove directories
+ -f', --force
+ force (ignore non-existing files and errors,
+ remote read-only files and non-empty directories)
+
+
+which.py
+~~~~~~~~
+
+Find a program in PATH and print full path to it.