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Top Forums Shell Programming and Scripting Shell scripting: frequency of specific word in a string and statistics Post 302820933 by Chubler_XL on Thursday 13th of June 2013 04:41:25 PM
Old 06-13-2013
1) I then expression "^(day|real)," the ^ symbol matches the beginning of the line, ie day or real must be at the front of the line and be followed by a comma so to match the heading line or any sub-string with day or real simply use "(^WORD|day|real)"

2) you can use awk like this:
Code:
./your_script.sh | awk -F, 'NR==1 || ($5==0 && $4==0.5 && $3==1)'

prints out line if
rownumber = 1 (header row) OR
field#5 (-1 value) is 0 AND field#4 (0 value) is 0.5 AND field#3 (1 value) is 1
 

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ZDUMP(8)						    Linux System Administration 						  ZDUMP(8)

NAME
zdump - timezone dumper SYNOPSIS
zdump [ --version ] [ --help ] [ -v ] [ -c [loyear,]hiyear ] [ zonename ... ] DESCRIPTION
Zdump prints the current time in each zonename named on the command line. These options are available: --version Output version information and exit. --help Output short usage and exit. -v For each zonename on the command line, print the time at the lowest possible time value, the time one day after the lowest possible time value, the times both one second before and exactly at each detected time discontinuity, the time at one day less than the highest possible time value, and the time at the highest possible time value. Each line ends with isdst=1 if the given time is Day- light Saving Time or isdst=0 otherwise. -c [loyear,]hiyear Cut off the verbose output near the start of the given year(s). The output still includes the lowest possible time value and one day after it, and the highest possible time value preceded by the time value one day before it. SEE ALSO
tzfile(5), zic(8) COLOPHON
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. 2013-02-12 ZDUMP(8)
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