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Help needed-calculate previous date

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# 1  
Old 08-27-2008
Help needed-calculate previous date
Hi Friends,

Need a command/script in unix which calculates previous date [day -1] from current date.

For ex:
If current date= 01 Jan 2008, then output =31 Dec 2007
If current_date =01 Aug 2008 , then output= 31 July 2008

Please advice

Regards,
Suresh
# 2  
Old 08-27-2008
https://www.unix.com/answers-frequent...rithmetic.html
# 3  
Old 08-27-2008
try this
Quote:
Originally Posted by sureshg_sampat
Hi Friends,

Need a command/script in unix which calculates previous date [day -1] from current date.

For ex:
If current date= 01 Jan 2008, then output =31 Dec 2007
If current_date =01 Aug 2008 , then output= 31 July 2008

Please advice

Regards,
Suresh

Suresh,

I've been using this code in my shell-scripts. Try it if it works for you:

YDAY=`TZ=TAIST+16 date '+%Y%m%d'`

Smilie
# 4  
Old 08-29-2008
Hi Guys,

Thank you very much guys for the inputs
this command is working fine for me
TZ=TAIST date '+%Y%m%d'
20080829

Just wanna check this command once on 1st September to see if it retrives previous date correctly. Hope this command will work fine during year change over as well

-Thanks
Suresh
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