Created
November 24, 2016 23:30
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Atomic shell script for cronjobs
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| #!/bin/sh | |
| # Author: http://serverfault.com/questions/191083/how-can-i-run-a-script-from-cron-only-once-at-a-time/639747 | |
| LOCKDIR=/tmp/.myprog.lock | |
| mkdir $LOCKDIR || exit 0 | |
| trap "{ rm -rf $LOCKDIR ; exit 0; }" EXIT | |
| echo "a" | |
| sleep 30 | |
| echo "b" |
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