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The below command is used for getting the yerterdays date in Unix Ksh on HP UX
DATE_STAMP=`TZ=CST+24 date +%m/%d/%Y`
Can somebody let me know what does “CST + 24 date ” in above command do?
That command sets the timezone to CST+24 and returns the date in that timezone.
if you are looking for a command to find out yesterday’s date, you are better of using the TZ trick esp. if you are in a timezone that observes DST.
use perl one liner instead.
Just a guess on your command – since its yesterday at CST+24 timezone the command returns yesterday’s date and if you use CST-24, it retunrs tomorrow’s date since the date translates to tomorrows date at CST-24 timezone.