#!/usr/bin/python3
import os, shutil, sys

myname = os.path.basename(sys.argv[0])
if myname == "echo":
    print(*sys.argv[1:])
elif myname == "cp":
    shutil.copyfile(sys.argv[1], sys.argv[2])
elif myname == "rm":
    for pathname in sys.argv[1:]:
        os.unlink(pathname)
else:
    print(f"Unknown name: {myname}", file=sys.stderr)