cron and time changes

[gamerland]

We are adding servers in Austrailia and Japan. These servers show local time, but when we "go dark" once a week we all go down at the same time. When we went to/from Daylight Savings Time, they were off by an hour from the central repository.

Anyone know of a quick and easy way to alter cron processes by an hour. (i.e. script that takes all cron entries and adds or subtracts 1 hour from the start time) I have done it manually a couple of times, but this seems like it should be easy. Is it as simple as:
crontab -l > filename
modify file
crontab filename

Just want to know if anyone has had a problem doing this or if you have done it and can cut/paste.

 

[KenCunningham]

If you know that the time changes are the same each time, I'd keep a copy of your amended crontab and just overwrite the existing one (and issue a crontab <file> as appropriate, reverting to the original when necessary. Does this make sense? - it's been a long Friday!

 

[gamerland]

It does make sense, except (always on of those)... we need to ensure that not only cron gets updated with new processes but both &quot;DST&quot; versions do too. While one line in three files is not a big deal, it becomes one if someone new (or old) ever forgets.

Good thought though...thanks