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Top Forums Shell Programming and Scripting Check for length which exceeds specified length in a line Post 302733705 by itkamaraj on Wednesday 21st of November 2012 01:08:37 AM
Old 11-21-2012
Code:
awk -F, 'BEGIN {len="5,6,7,8";split(len,arr,",");}{for(i=1;i<=NF;i++){if(length($i)>arr[i])next}}1' input.csv

Code:
 
$ cat input.csv
this123,is,test,message
this,is,test,message
this,is,test,message
this,is,test,message123

Code:
 
$awk -F, 'BEGIN {len="5,6,7,8";split(len,arr,",");}{for(i=1;i<=NF;i++){if(length($i)>arr[i])next}}1' input.csv
this,is,test,message
this,is,test,message

5,6,7,8 is the length to check the 1,2,3,4 fileds

if you want to check only for some particular fields, then

Code:
 
$awk -F, 'BEGIN {len="5,0,0,8";split(len,arr,",");}{for(i=1;i<=NF;i++){if( arr[i]!=0 && length($i)>arr[i])next}}1'  input.csv
this,is,test,message
this,is,test,message

 

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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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