Text Translation Post: 302500765

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Special Forums UNIX Desktop Questions & Answers Text Translation Post 302500765 by Corona688 on Tuesday 1st of March 2011 12:38:10 PM

03-01-2011

Registered User

That is a useless use of cat. Whenever you do cat foo | program you can also do program < foo to save your program a lot of wasted CPU time.

For programs that take filenames, like awk does, you can even do
program foo

Code:

$ awk '{
         if($0 ~/original/ )
                 print "TEXT1"
         else if($0 ~/dollars/)
                 print "TEXT2"
         else
                 print $0
 }
 ' datafile
20110228 Mike Original apartment costed almost 23277AA
TEXT2
20110219 BUT THAT WAs magical and everyone was so elated to see 93884
20110222 so would you want to join us 38488

Note that original and Original are not the same.

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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)