Compare two timestamps and print elapsed time


 
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Top Forums Shell Programming and Scripting Compare two timestamps and print elapsed time
# 8  
Old 08-17-2012
Hi,

Try this
Code:
Src_dt="Aug 15, 2012 02:00:03"
Tgt_dt="Aug 14, 2012 18:00:03"
Total=$(expr $(date -d "$Src_dt"  +%s) - $(date -d "$Tgt_dt" +%s))
echo $Total | awk '{printf "Elapsed time: %02d:%02d:%02d\n",$1/(60*60),$1%(60*60)/60,$1%60}'

Output will be.
Code:
Elapsed time: 08:00:00

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procsystime(1m) 						   USER COMMANDS						   procsystime(1m)

NAME
procsystime - analyse system call times. Uses DTrace. SYNOPSIS
procsystime [-acehoT] [ -p PID | -n name | command ] DESCRIPTION
procsystime prints details on system call times for processes, both the elapsed times and on-cpu times can be printed. The elapsed times are interesting, to help identify syscalls that take some time to complete (during which the process may have slept). CPU time helps us identify syscalls that are consuming CPU cycles to run. Since this uses DTrace, only users with root privileges can run this command. OPTIONS
-a print all data -c print syscall counts -e print elapsed times, ns -o print CPU times, ns -T print totals -p PID examine this PID -n name examine processes which have this name EXAMPLES
Print elapsed times for PID 1871, # procsystime -p 1871 Print elapsed times for processes called "tar", # procsystime -n tar Print CPU times for "tar" processes, # procsystime -on tar Print syscall counts for "tar" processes, # procsystime -cn tar Print elapsed and CPU times for "tar" processes, # procsystime -eon tar print all details for "bash" processes, # procsystime -aTn bash run and print details for "df -h", # procsystime df -h FIELDS
SYSCALL System call name TIME (ns) Total time, nanoseconds COUNT Number of occurrences DOCUMENTATION
See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver- bose descriptions explaining the output. EXIT
procsystime will sample until Ctrl-C is hit. AUTHOR
Brendan Gregg [Sydney, Australia] SEE ALSO
dtruss(1M), dtrace(1M), truss(1) version 1.00 Sep 22, 2005 procsystime(1m)