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Full Discussion: awk Print get error
Top Forums Shell Programming and Scripting awk Print get error Post 302533013 by Corona688 on Wednesday 22nd of June 2011 03:23:04 PM
Old 06-22-2011
That's a useless use of backticks. Why do "var=`cat stuff` ; echo $var" when just "cat stuff" achieves the same thing?

It's valid in my awk. Depending on your system, 'awk' may actually be an ancient feature-deprived version, try nawk.

I'm not sure it's actually doing what you want either, though. That $$ may be turning into a number, the shell's PID.

There's an easier and safer way to get variables into awk/nawk than fooling with single/double quotes:

Code:
echo asdf | awk -v var="qwerty" '{ print $1, var }'

---------- Post updated at 01:23 PM ---------- Previous update was at 01:15 PM ----------

Or even get the var in awk itself:
Code:
awk 'BEGIN { getline var <"abc" } { print $0, var }'

Last edited by Corona688; 06-22-2011 at 04:26 PM.. Reason: fix typos, sorry
This User Gave Thanks to Corona688 For This Post:
 

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LEARN ABOUT OPENSOLARIS

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).

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +--------------------+-----------------+
       |  ATTRIBUTE TYPE    | ATTRIBUTE VALUE |
       +--------------------+-----------------+
       |Availability	    | SUNWgawk	      |
       +--------------------+-----------------+
       |Interface Stability | Volatile	      |
       +--------------------+-----------------+
NOTES

       Source for gawk is available on http://opensolaris.org.

Free Software Foundation					    Nov 3 1999								  IGAWK(1)
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