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Full Discussion: Based on the first & last timestamp of the file, need to calculate the time taken to complete
Top Forums Shell Programming and Scripting Based on the first & last timestamp of the file, need to calculate the time taken to complete Post 302719173 by Klashxx on Monday 22nd of October 2012 07:51:34 AM
Old 10-22-2012
A GNU solution:
Code:
#gawk '
function sec(num) {
cmd="date -d \""num"\" +%s"
cmd|getline r
close(cmd)
return r
}
match($0, /(^\w+.* [0-9]+:[0-9]+:[0-9]+ +(PM|AM))/ , ary) {
a=ary[1];c++}c==1{o=a}
END{ f=sec(a)-sec(o) ;print "Diff seconds: "f}' infile

Last edited by Klashxx; 10-22-2012 at 09:01 AM..
 

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LEARN ABOUT CENTOS

trace-cmd-stop

TRACE-CMD-STOP(1)														 TRACE-CMD-STOP(1)

NAME

       trace-cmd-stop - stop the Ftrace Linux kernel tracer from writing to the ring buffer.

SYNOPSIS

       trace-cmd stop

DESCRIPTION

       The trace-cmd(1) stop is a complement to trace-cmd-start(1). This will disable Ftrace from writing to the ring buffer. This does not stop
       the overhead that the tracing may incur. Only the updating of the ring buffer is disabled, the Ftrace tracing may still be inducing
       overhead.

       After stopping the trace, the trace-cmd-extract(1) may strip out the data from the ring buffer and create a trace.dat file. The Ftrace
       pseudo file system may also be examined.

       To disable the tracing completely to remove the overhead it causes, use trace-cmd-reset(1). But after a reset is performed, the data that
       has been recorded is lost.

SEE ALSO

       trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-split(1),
       trace-cmd-list(1), trace-cmd-listen(1)

AUTHOR

       Written by Steven Rostedt, <rostedt@goodmis.org[1]>

RESOURCES

       git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git

COPYING

       Copyright (C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL).

NOTES

	1. rostedt@goodmis.org
	   mailto:rostedt@goodmis.org

								    06/11/2014							 TRACE-CMD-STOP(1)
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