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Full Discussion: Trim white spaces using awk
Top Forums Shell Programming and Scripting Trim white spaces using awk Post 302081835 by mona on Friday 28th of July 2006 04:29:42 AM
Old 07-28-2006
Trim white spaces using awk

Hi,

I have a CSV file with footer information as below. The third value is the number of records in the file. Sometimes it contains both leading and trailing white spaces which i want to trim using awk.

C,FOOTER , 00000642
C,FOOTER , 00000707
C, FOOTER, 42
C, FOOTER, 129

Code:
eval `awk -F,  ' /FOOTER/ {print "set RecordsFound=" $3} 
/HEADER/ { print "set FileBusinessDate=" $4} END{ print "set ActualRecords=" NR-2 }  ' ${SourceDir}/${FileCsv} `

Above is the command which is already present in production and this statement fails since the $3 has spaces in it. So far we didn't get any spaces in the CSV, so this statement was working fine for the past 1 year.

Is there any way to trim the spaces(both leading and trailing spaces) in AWK?

I tried gsub(/ /,"",$3) but it doesn't work

Any help is much appreciated

Thanks in Advance
Mohana
 

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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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