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Top Forums Shell Programming and Scripting AWK - compare $0 to regular expression + variable Post 302289125 by jolecanard on Wednesday 18th of February 2009 08:05:41 PM
Old 02-18-2009
Power AWK - compare $0 to regular expression + variable

Hi,

I have this script:
Code:
awk -v va=45 '$0~va{print}' flo2

That returns: "4526745 1234 " (this is the only line of the file "flo2".

However, I would like to get "va" to match the begining of the line, so that is "va" is different than 45 (eg. 67, 12 ...) I would not have any output. That would be something like that:
Code:
awk -v va=45 '$0~/^${va}/{print}' flo2

but that does not work because $va is not a regular expression!

Any suggestion?

Thanks
 

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IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME
igawk - gawk with include files SYNOPSIS
igawk [ all gawk options ] -f program-file [ -- ] file ... igawk [ all gawk options ] [ -- ] program-text file ... DESCRIPTION
Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1). AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like @include getopt.awk in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path. OPTIONS
See gawk(1) for a full description of the AWK language and the options that gawk supports. EXAMPLES
cat << EOF > test.awk @include getopt.awk BEGIN { while (getopt(ARGC, ARGV, "am:q") != -1) ... } EOF igawk -f test.awk SEE ALSO
gawk(1) Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995. AUTHOR
Arnold Robbins (arnold@skeeve.com). Free Software Foundation Nov 3 1999 IGAWK(1)
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