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To get the previous 5 minutes

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# 1  
Old 05-16-2012
To get the previous 5 minutes
Hi

I need to get the previous 5 minutes from the currnet time as given below. Please help.

Current time : date +%d-%m-%Y_%H-%M
output : 16-05-2012_15-05
I need the previous 5 minutes of the above output ,

Required output:

16-05-2012_15-04
16-05-2012_15-03
16-05-2012_15-02
16-05-2012_15-01
16-05-2012_15-00
# 2  
Old 05-16-2012
One way using a perl one-liner:
Code:
$ perl -MPOSIX -e 'for ( 1 .. 5 ) { printf qq[%s\n], strftime q[%d-%m-%Y_%H-%M], localtime( time - $_ * 60 ) }'
16-05-2012_12-21                                                                                                                                                                                                                             
16-05-2012_12-20                                                                                                                                                                                                                             
16-05-2012_12-19                                                                                                                                                                                                                             
16-05-2012_12-18                                                                                                                                                                                                                             
16-05-2012_12-17

# 3  
Old 05-16-2012
Please post what Operating System and version you are running and what Shell you prefer. We really need to know if you have the GNU date command.

Questions about date arithmetic are common on this forum and there is a FAQ.

It always helps to know what problem you are trying to solve when you have a problem with a solution.
# 4  
Old 05-17-2012
Sorry not to mention those details. I am using Redhat linux and i required it on shell script(bash)
# 5  
Old 05-17-2012
Try: bash + GNU date (slow):
Code:
for i in {1..5}; do
  date -d "$i minutes ago" +%d-%m-%Y_%H-%M
done

Or ksh (fast):
Code:
for i in {1..5}; do
  printf "%(%d-%m-%Y_%H-%M)T\n" "$i minutes ago"
done

These 2 Users Gave Thanks to Scrutinizer For This Post:
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