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Script to get previous date for the given input date..

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# 1  
Old 12-01-2014
Script to get previous date for the given input date..
hi all,
need a script or command to get the previous date for the given input date...

like in my script i will pass date as input parameter like 2014-12-01 and i want the output as previous date.. ie.. 2014-11-30
This User Gave Thanks to hemanthsaikumar For This Post:
jean siewe
# 2  
Old 12-01-2014
Hello hemant,

Following may help you in same.

Here is the script.
Code:
cat days_ago.ksh
date -d"$1 days ago"

Run the script as follows.
Code:
./days_ago.ksh 20 ##### By giving number of days ago you need as arguments

Output will be as follows.
Code:
Tue Nov 11 07:48:52 EST 2014

Where current date is 1st Dec 2014


EDIT: To get exactly in YYYY-MM-DD format as follows code may help.
Code:
cat days_ago.ksh
date -d"$1 days ago" +%Y-%m-%d

Output will be as follows.
Code:
./days_ago.ksh 20
2014-11-11


Thanks,
R. Singh
Last edited by RavinderSingh13; 12-01-2014 at 09:17 AM.. Reason: Added a solution to get date in format YYYY-MM-DD
# 3  
Old 12-01-2014
I think the OP doesn't want "minus N days from the current date"...
---
If you have GNU date, try this
Code:
$ date -d "2014-12-01 -1 day" +%Y-%m-%d
2014-11-30
$

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