Timer command. (Doesn't work.)

unfinished/timer.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env python
+"""A simple timer."""
+
+import argparse
+import time
+
+def get_parser():
+    parser = argparse.ArgumentParser()
+    parser.description = __doc__.splitlines()[0]
+    paa = parser.add_argument
+    paa("minutes", type=int)
+    return parser
+
+def main():
+    parser = get_parser()
+    opts = parser.parse_args()
+    start = time.time()
+    throttle = 10.0   # Update status every N seconds.
+    while True:
+        now = time.time()
+        remaining = start - now
+        if remaining < 1.0:
+            break
+        print(int(remaining), "minutes remaining.")
+        time.sleep(throttle)
+    print("Beep!\a")
+
+if __name__ == "__main__":  main()