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Full Discussion: Perl regular expression
Top Forums Shell Programming and Scripting Perl regular expression Post 302695423 by rangarasan on Monday 3rd of September 2012 02:32:56 AM
Old 09-03-2012
Quote:
Originally Posted by ragilla
Hi Ranga,

you misunderstood my question, i know the difference between map and grep.

i wanted to substitute "delivered to governor on 21/23/3345" with 21/23/3354 and "ram 2345/43" with "2345/43", so i substituted with $2 in delivered to governor on 21/23/3345, but the string when matched ram... how it is substituting "2345/43" even though i dint group that in regular expression.

Regards
Sridhar
You are chopping the texts 'delivered to governor on ' or 'ram ' with $2. Here $2 deosn't have any value hence it substitute with empty string.
durden_tyler has been stated above clearly. Thanks mate Smilie

What you are trying to do with this..?

Cheers,
Ranga Smilie
 

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cpufreq-selector(1)					      General Commands Manual					       cpufreq-selector(1)

NAME
cpufreq-selector -- tool to set CPU frequency SYNOPSIS
cpufreq-selector [-c CPU] [-g GOV] [-f FREQ] DESCRIPTION
cpufreq-selector is a command-line tool for choosing CPU frequency settings. OPTIONS
This program follows the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included below. -?, --help " 10 Show summary of options. -c NUMBER, --cpu=NUMBER " 10 number of CPU to set. If omitted, zeroth CPU is implied. -g GOV, --governor=GOV " 10 CPU governor to use, such as ``powersave'', ``performance''. -f FREQ, --freq=FREQ " 10 CPU frequency to use, in kHz. AUTHOR
cpufreq-selector, as part of gnome-applets, was written by Carlos Garcia Campos carlosgc@gnome.org and other GNOME contributors. This manual page was written by Theppitak Karoonboonyanan thep@linux.thai.net for the Debian system (but may be used by others). Permis- sion is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 any later ver- sion published by the Free Software Foundation. On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL. cpufreq-selector(1)
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