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Full Discussion: Awk: BEGIN: prints nothing
Top Forums Shell Programming and Scripting Awk: BEGIN: prints nothing Post 303008844 by Scott on Wednesday 6th of December 2017 07:18:01 PM
Old 12-06-2017
The field separator is FS. You can either pass it into the script, either from the command line when you invoke the script (by adding -v FS=?), or by setting it in the BEGIN section (with FS=?).

Remember if you invoke the script from the command like with awk -v FS=? -f ..., the shebang is not used.

If you chose to invoke the script directly, e.g. with: ~/bin/sum_dupli_gene.awk make_gene_probe.txt, you can add the -v option there:
Code:
~/bin/sum_dupli_gene.awk -v FS=? make_gene_probe.txt

Or by adding it to the shebang line:
Code:
#!/usr/bin/awk -v FS=? -f

(where ? is the field separator to use)
 

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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)
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