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Full Discussion: Gsub function in awk
Top Forums Shell Programming and Scripting Gsub function in awk Post 302831727 by yifangt on Thursday 11th of July 2013 03:30:03 PM
Old 07-11-2013
Thanks Don!
You explanation can't be more helpful, and I tried your suggestion with blank line and one-word-only line. I saw the difference. I put it here for others if they need it.
Code:
 $ awk 'gsub(/[[:punct:]_[:blank:]]/, " ", $0)' text.txt
This is a test for gsub
I typed this random text file
which contains punctuation like           etc 
The script should remove all the punctuations

Code:
$ awk '{gsub(/[[:punct:]_[:blank:]]/, " ", $0); print}' /tmp/text.txt 
This is a test for gsub
I typed this random text file
which contains punctuation like           etc 
The script should remove all the punctuations

fox

You give me another instance that this forum is so great!
 

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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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