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Full Discussion: How to use shell command in awk ?
Top Forums Shell Programming and Scripting How to use shell command in awk ? Post 302292744 by Franklin52 on Sunday 1st of March 2009 03:11:16 PM
Old 03-01-2009
Quote:
Originally Posted by salman4u
thanks Franklin52,
the last one is the easiest for me haha! and can you please tell me how can i do the following in awk script file?

Code:
 for i in `ls`
 do
      echo $i
 done

Do you mean something like this?

Code:
awk 'BEGIN{
while ("ls" | getline var){
  #Do something with var...}
}
{...}'

Quote:
also why is this not working?
Code:
BEGIN{
system("date \"+%H-%M\"")|getline d
}
{

}
The system command returns the exit status of the command that was executed not the output of the command.

Regards
 

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LEARN ABOUT REDHAT

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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