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Full Discussion: How to extract timestamp from the filename?
Top Forums Shell Programming and Scripting How to extract timestamp from the filename? Post 302425888 by av_vinay on Monday 31st of May 2010 03:34:23 AM
Old 05-31-2010
I tried with the cut option, with which I am able to extract first date field, but it is not extracting time string as in :


Code:
dateStr=$(echo name_abc_20100531_142528.txt | cut -d_ -f3)

timeStr=$(echo name_abc_20100531_142528.txt | cut -d_ -f4)

echo $dateStr "   " $timeStr

Its printing:

20100531 142528.txt


But my desired o/p should be:

20100531 142528

Help me out to extract the field without the file extension.


Thanks.,
 

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LEARN ABOUT MOJAVE

syscallbysysc.d

syscallbysysc.d(1m)						   USER COMMANDS					       syscallbysysc.d(1m)

NAME

       syscallbysysc.d - syscalls by syscall. Uses DTrace.

SYNOPSIS

       syscallbysysc.d

DESCRIPTION

       syscallbysysc.d is a DTrace OneLiner to a report of the number of each type of system call made.

       This is useful to identify which system call is the most common.

       Docs/oneliners.txt and Docs/Examples/oneliners_examples.txt in the DTraceToolkit contain this as a oneliner that can be cut-n-paste to run.

       Since this uses DTrace, only users with root privileges can run this command.

EXAMPLES

       This samples until Ctrl-C is hit.
	      # syscallbysysc.d

FIELDS

       first field
	      This is the system call type. Most have man pages in section 2.

       second field
	      This is the count, the number of occurrances for this system call.

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

       syscallbysysc.d will sample until Ctrl-C is hit.

AUTHOR

       Brendan Gregg [Sydney, Australia]

SEE ALSO

       procsystime(1M), dtrace(1M), truss(1)

version 1.00							   May 15, 2005 					       syscallbysysc.d(1m)
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