date command with different time zones

lothario · 12-19-2007, 01:42 AM

I have a shell script which starts with the date command.
This tells us when the shell script was run.
At the moment it says:
Tue Dec 18 23:33:46 PST 2007

This was all good, so far.

But now I have to run the same script and show the time several
time zones at the same time. So the output should look like this:
Tue Dec 18 23:33:46 PST 2007
....................CST 2007
....................MST 2007
....................EST 2007
and so on

Without changing the time zone on the system, how can I display the time:
In several time zones.
OR
Issue the date command repeatedly with a different time zone.

Tinkster · 12-19-2007, 01:59 AM

Code:

for i in EST CST MST; do TZ=$i date "+%c %Z" -d "now"; done

Cheers,
Tink

lothario · 12-19-2007, 04:37 PM

Thank you.

Tinkster · 12-19-2007, 04:42 PM

Welcome; if the machine is kind of slow-ish, or you're worried that time-
stamps may wrap around while the loop runs, you could get the result of
one date, and use that for the input of the one run in the loop.

Something like:

Code:

result=`date`;for i in EST CST MST; do TZ=$i date "+%c" -d "$result"; done

Cheers,
Tink

lothario · 12-19-2007, 04:47 PM

Aah haa. Got it.