I wrote an awk script to analyse file A.
I call the script with files A and B. File A has lines like:
The first 9 characters are interpreted as a line number;
for each line number found I want to output this line number of file B.
searching around my idea was to use sed to output the line number, and system call sed inside awk...but the script below does not work, the call to sed fails. maybe just because the line_nr variable isnt correctley passed.
Can someone help me how to correctely write the call to sed or solve the problem inside awk?
regards
kp
---------- Post updated at 10:26 AM ---------- Previous update was at 10:15 AM ----------
ok, shame on me for finding this too late. the passing of variables to the system call is done via sysstring; the second file i passed via "-v sourcefile=$2" to awk:
so, the modified awk script works. the question remains: possible without system call?
Last edited by Scott; 02-10-2010 at 11:33 AM..
Reason: Please use code tags
Hi Experts,
The question may look very silly by seeing the title, but please have a look at it clearly.
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Discussion started by: Mudshark
5 Replies
LEARN ABOUT LINUX
igawk
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)