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Editorial Team
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Asked: 2026-05-30T06:28:04+00:00

I have checked for a solution here but cannot seem to find one. I

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I have checked for a solution here but cannot seem to find one. I am dealing with a very slow wan connection about 300kb/sec. For my downloads I am using a remote box, and then I am downloading them to my house. I am trying to run a cronjob that will rsync two directories on my remote and local server every hour. I got everything working but if there is a lot of data to transfer the rsyncs overlap and end up creating two instances of the same file thus duplicate data sent.

I want to instead call a script that would run my rsync command but only if rsync isn’t running?

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1 Answer

  1. Editorial Team

    Via the script you can create a “lock” file. If the file exists, the cronjob should skip the run ; else it should proceed. Once the script completes, it should delete the lock file.

    if [ -e /home/myhomedir/rsyncjob.lock ]
then
  echo "Rsync job already running...exiting"
  exit
fi

touch /home/myhomedir/rsyncjob.lock

#your code in here

#delete lock file at end of your job

rm /home/myhomedir/rsyncjob.lock
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