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I have a shell script that I want to get the date and time 30 minutes ago in GMT.
I have this working great for full hours, but partial hours don't seem to work:
TZ=GMT+1 date +%Y-%m-%d" "%H:%M:%S 2010-01-08 17:43:57
TZ=GMT+2 date +%Y-%m-%d" "%H:%M:%S 2010-01-08 16:44:07
TZ=GMT+.5 date +%Y-%m-%d" "%H:%M:%S 2010-01-08 18:44:38
tried lots of combinations of 0.5 1.5, no partial hours seem to work, which is weird because there are some timezones that are not full offset of an hour.
any suggestions?
cant use perl or ruby needs to be regular shell or mysql call.
916
Sample shell script to display the current date and time #!/bin/bash now="$(date)" printf "Current date and time %s\n" "$now" now="$(date +'%d/%m/%Y')" printf "Current date in dd/mm/yyyy format %s\n" "$now" echo "Starting backup at $now, please wait..." # command to backup scripts goes here # ...
The date command under UNIX displays date and time. You can use the same command set date and time. You must be the super-user (root) to change the date and time on Unix like operating systems. The date command shows the date and time read from the kernel clock.
date -u --date="-30 minutes"
56
You can also do this:
TZ='UTC+0:30' date
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