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How Do I backdate some to prior month?

 
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# 1  
Old 06-03-2008
How Do I backdate some to prior month?
I am currently programming a shell script and am running into an issue with how to backdate the timestamp to the prior month.

Anyone have any suggestions as to how to backdate??

current date timestamp is: date +%Y%m%d-%H%M

which being the month is 06 i want it to output 05.

Any suggestions please post

Thank you.
# 2  
Old 06-03-2008
date -d 'month ago' should work on Linux, and possibly other platforms with the -d option; or you can do some heavy gymnastics with $TZ
 
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