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Full Discussion: cleanup $PATH with awk
Top Forums Shell Programming and Scripting cleanup $PATH with awk Post 302326152 by doc_symbiosis on Wednesday 17th of June 2009 07:54:55 AM
Old 06-17-2009
Very much thanks for the fast replies to both of you.

I've have made this from the sample of rakeshawasthi
Code:
echo $PATH | awk -F":" '{for (i=1;i<=NF;i++){if (x[$i]++==0) print $i}}'

But I think the example of you, ahmad.diab, I still a little more elegant, and make nearly exactly, what I want.

-----Post Update-----

I just noticed, that I get a colon at the end of $PATH for everytime I run the command.

-----Post Update-----

I noticed, that when ich use "echo -n" there is only one colon at the end undepending of the number of runs of the command. But I still can't export $PATH, because of the trailing colon.

Last edited by doc_symbiosis; 06-17-2009 at 09:27 AM..
 

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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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