mbsyncd

#!/usr/bin/python

# mbsync seems to work well but, weirdly, doesn't have a daemon mode
# (surely 95% of users will want to run it that way?)
# Here's a wrapper for it that forks into background
# and runs forever, printing the time each time.

from __future__ import print_function

import time
import subprocess
import os, sys

# Change this to whereever you want the log:
logfile = "~/.mutt/mbsync.log"

def Usage():
    print("Usage: %s [seconds]" % os.path.basename(sys.argv[0]))
    sys.exit(1)

if __name__ == '__main__':
    if len(sys.argv) > 2:
        Usage()

    if len(sys.argv) == 2:
        try:
            secs = int(sys.argv[1])
        except:
            Usage()
    else:
        secs = 120

    rc = os.fork()
    if rc:
        sys.exit(0)

    logfp = open(os.path.expanduser(logfile), 'w')
    print("mbsync daemon, ouput to %s" % logfile)

    while True:
        subprocess.call(["date"], stdout=logfp, stderr=logfp)

        # mbsync suppresses its summary when stdout isn't a tty,
        # and there's no way to request a summary.
        # So nothing will go to the log; but if output isn't redirected,
        # it will print its summary to the terminal every time.
        subprocess.call(["mbsync", "-a"], stdout=logfp, stderr=logfp)

        time.sleep(secs)