Finding difference in 2 different timestamps

Shell Programming and Scripting
1

Legends,

I have a requirement to run the script exactly after one hour of completion of dependent script.

Eg: Script B should run after one hour on the completion of Script A.

I got the time stamps using following variables. these scripts runs in autosys

>  DATE=`date +%H:%M`
> JOB=`jobhist act abcjob  |tail -1 | awk '{print $6}'`

> echo $JOB $DATE
03:23 09:54

>  DIFF=`expr $DATE - $JOB`
expr: non-numeric argument

how to get the timestamp difference.
if diff is more than one then run the job, else, wait for one hour.
how to calculate that . please help

2 
JOB=03:23 
DATE=09:54
JOB_SECS=$(echo $JOB | awk -F":" '{print $1*60+$2}')
DATE_SECS=$(echo $DATE | awk -F":" '{print $1*60+$2}')

DIFF=$((DATE_SECS-JOB_SECS))
if [ $DIFF -ge 60 ]
then
  echo start job B
fi
1 Like
3

@krishmaths

if [ $DIFF -ge 60 ]

is it seconds or minutes. because you calculated diff in seconds?
Please explain working too :slight_smile: :confused:

4

It is calculated in minutes. 09:54 is derived by +%H +%M in your date command.

I'm simply trying to convert hours into minutes (09 * 60) and add minutes portion (+54). This will give the absolute minutes and can be used for finding out the difference.

1 Like
5

Thanks krishmaths
it worked.