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Full Discussion: Print rows, having pattern in specific column...
Top Forums Shell Programming and Scripting Print rows, having pattern in specific column... Post 302359253 by radoulov on Tuesday 6th of October 2009 06:14:53 AM
Old 10-06-2009
Quote:
Actually I got a list of file end with *.txt
I want to use the same command apply to all the *.txt
Why don't you just apply that command directly?

Quote:
My desired output is got a script named as txt.sh look like this:
Code:
awk '{print $1"\t"}' file1.txt
awk '{print $1"\t"}' file2.txt
awk '{print $1"\t"}' file3.txt
awk '{print $1"\t"}' file4.txt

You don't need awk for this (assuming the filenames do not contain embedded new lines):

Code:
(
  IFS='
'
printf "awk '{print \$1\"\\\t\"}' %s\n" $(<infile)
  )

And, as I already said, you can achieve the same with:

Code:
awk '{ print $1 "\t" }' *txt

... or use xargs if you have too many files.

Quote:
Thus I'm asking whether you know the way to express the single quote by awk print
thanks again for your suggestion
Code:
awk -vq=\' 'BEGIN {
  for (f=1; f<ARGC; f++)
    print "awk", q "{ print $1 \"\\t\" }" q, ARGV[f]
    }' *txt

For example:

Code:
% ls
file1.txt  file2.txt  file3.txt  file4.txt
% awk -vq=\' 'BEGIN {
  for (f=1; f<ARGC; f++)
    print "awk", q "{ print $1 \"\\t\" }" q, ARGV[f]
}' *txt
awk '{ print $1 "\t" }' file1.txt
awk '{ print $1 "\t" }' file2.txt
awk '{ print $1 "\t" }' file3.txt
awk '{ print $1 "\t" }' file4.txt

 

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LEARN ABOUT DEBIAN

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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