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Top Forums Shell Programming and Scripting Append spaces the rows to make it into a required fixed length file Post 302751015 by sathyaonnuix on Thursday 3rd of January 2013 04:51:53 AM
Old 01-03-2013
This works great; can you please explain how this works

Code:
# cat file
12345 abcdef
234 abcde
89012 abcdefgh


# awk -v l="15" '{s="%-"l"s\n";printf(s,$0);}' file > temp; cat temp > file


# awk '{ if (length($0) > max) max = length($0) }
END { print max }' file
15


Last edited by sathyaonnuix; 01-03-2013 at 05:57 AM..
 

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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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