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datetime difference in seconds

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# 1  
Old 05-31-2011
datetime difference in seconds
Hi,

I'm trying to find processing time of my script. Please can someone give me the commands to get the start/end time in "dd-mm-yyyy hh:mm:ss" and the differnce in seconds.

Quote:
Start Time : dd-mm-yyyy hh:mm:ss
End Time : dd-mm-yyyy hh:mm:ss
Processing Time (in secs) : {number of seconds}
Thanks!
# 2  
Old 05-31-2011
You just use time command to get it.

Code:
time <command>

# 3  
Old 05-31-2011
Quote:
Originally Posted by kumaran_5555
You just use time command to get it.

Code:
time <command>

Thanks, but i've to run my script part of a job, so it would be better if i've the time processing part of my script.
# 4  
Old 05-31-2011
Use POSIX time for date format
Code:
date "+%s"

It's much easier to do arithmetic operations on that format. If you substarct start date from end date in your script you will get how much the operation lasted in seconds.
If you need to convert standard time to POSIX time, perl and awk (strftime) support that.
# 5  
Old 05-31-2011
If you have access to a database (Sybase, Oracle), I find they make it much easier.
# 6  
Old 05-31-2011
If you want time info in a file :

Code:
echo start time: $(date +'%Y-%m-%d %H:%M:%S') >> time_info
(time <command>) 1>/dev/null 2>> time_info
echo end time: $(date +'%Y-%m-%d %H:%M:%S') >> time_info


You could use a wrapper script and schedule this in cron.
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