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#!/usr/bin/python
"""Run a command until it succeeds.
Lars Wirzenius <liw@liw.fi>
"""
import subprocess
import sys
import time
def do_until(argv):
while True:
p = subprocess.Popen(argv)
p.communicate()
if p.returncode == 0:
break
sys.stderr.write("do-until: command failed, "
"trying again in 1 second\n")
time.sleep(1)
def main():
argv = sys.argv[1:]
if argv:
do_until(argv)
if __name__ == "__main__":
main()
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