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Top Forums Shell Programming and Scripting Cleaner way to use shell variable in awk /X/,/Y/ syntax? Post 302794801 by hanson44 on Tuesday 16th of April 2013 06:00:06 PM
Old 04-16-2013
Cleaner way to use shell variable in awk /X/,/Y/ syntax?

Code:
$ cat data
Do NOT print me
START_MARKER
Print Me
END_MARKER
Do NOT print me

Code:
$ cat awk.sh
start=START_MARKER
end=END_MARKER

echo; echo Is this ugly syntax the only way?
awk '/'"$start"'/,/'"$end"'/ { print }' data

echo; echo Is there some modification of this that would work?
awk '/$start/,/$end/ { print }' start=$start end=$end data

Code:
$ ./awk.sh

Is this ugly syntax the only way?
START_MARKER
Print Me
END_MARKER

Is there some modification of this that would work?

Can anyone advise a way to avoid the relatively ugly glommed syntax? It's really not that ugly. Just want to know if a cleaner way. Using gawk, in case that matters.
 

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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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