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- #!/bin/sh
- # it is in format of `date -u -Iseconds`, example: 2014-09-29T22:59:21+0000
- # it comes from dom0, so is trusted
- read timestamp
- timediff=$(( `date -u +'+%Y%m%d%H%M%S'` - `date -u -d "$timestamp" +'+%Y%m%d%H%M%S'` ))
- if [ $timediff -le 2 -a $timediff -ge -2 ]; then
- # don't bother
- exit 0
- fi
- date -u -s "$timestamp" >/dev/null
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