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Full Discussion: Working out percentage in shell script
Top Forums UNIX for Beginners Questions & Answers Working out percentage in shell script Post 302990614 by mutley2202 on Sunday 29th of January 2017 10:52:58 AM
Old 01-29-2017
Working out percentage in shell script
Hi All,
I currently have a shell script which is pulling multiple counters from various sources. Due to the counters being cumulative counters I've got some code to work out the delta from the last reading and current which is working fine.

The problem i have now is being able to work out the success rate as a percentage.

Normally I would just take success and divide by attempts then multiply this by 100 which would give my success rate at a percentage (i'd like it to 2 decimal places).

How can this be done in a shell script ?

Any help is apprecaited as always.

Thanks
 

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LEARN ABOUT NETBSD

pmc

PMC(1)							    BSD General Commands Manual 						    PMC(1)

NAME

     pmc -- performance-monitoring counter interface for command execution

SYNOPSIS

     pmc -h
     pmc -C
     pmc -c event command [options ...]

DESCRIPTION

     pmc is a means of using a processor's performance-monitoring counter (PMC) facility to measure various aspects of a program's execution.  It
     is meant to be used in a fashion similar to time(1).

     The arguments are as follows:

     -h      Display a list of performance counter events available on the system.

     -C      Cancel any performance counters that are currently running.

     -c event
	     Count the event specified by event while running the command.

DIAGNOSTICS

     PMC support is not compiled into the kernel  Performance-monitoring counter support has not been compiled into the kernel.  It may be
     included using the PERFCTRS option.  See options(4) for details.

     PMC counters are not supported by CPU  Performance-monitoring counters are not available for the CPU.

SEE ALSO

     time(1), options(4)

HISTORY

     The pmc command first appeared in NetBSD 1.6.

AUTHORS

     The pmc command was written by Frank van der Linden <fvdl@wasabisystems.com>.  The kernel support for reading performance counters on the
     i386 architecture was written by
     Jason R. Thorpe <thorpej@zembu.com>.

BUGS

     The pmc command currently only supports performance-monitoring counters on the i386 architecture.

BSD
								 October 24, 2000							       BSD
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