Use cut output as variable piped awk command Post: 303019137

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Top Forums Shell Programming and Scripting Use cut output as variable piped awk command Post 303019137 by Don Cragun on Saturday 23rd of June 2018 11:40:52 PM

06-24-2018

Registered User

Showing us a command that does not work without explaining what you do want gives us no information that we can use to figure out what is going wrong.

But, since the default field separator for cut is a <tab> character and you're only extracting the first input field from info.txt to be fed into your awk script, it is obvious that the 6th and 20th fields in the input that awk is reading will ALWAYS be empty strings. And, since the string xargs is not a numeric string, the string specified by $i will either be treated as a synonym for $0 or treated as a syntax error. (And, since you haven't bothered to tell us what operating system or shell you're using, there isn't any way that we can test what might happen on your system!)

If you'd like to give us a sample input file, a specification of what you're trying to accomplish, the output that you hope to produce from your sample input file, and tell us what operating system and shell you're using, we might be able to help you accomplish your goal.

Oops! I take it back. Since you're giving awk the name of a file to process, the cut command output will be completely ignore by awk.

Last edited by Don Cragun; 06-24-2018 at 12:43 AM.. Reason: Add update.

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LEARN ABOUT CENTOS

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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