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Full Discussion: Substitution using awk/gawk
Top Forums Shell Programming and Scripting Substitution using awk/gawk Post 302260126 by jolecanard on Wednesday 19th of November 2008 07:41:34 PM
Old 11-19-2008
Substitution using awk/gawk

Hello,

I have a file containing lines such as:
Code:
 
       (1 104  (16) (17)    (18) (102))$
       (1 105  (16) (17) (19:21) (102))$

I would like to extract the numbers, only by using awk (or gawk).

I do not want to use "sed" as it is very slow.

For now my solution consists in using the sub command with gawk, and substitute "(", ")" and "$" by "". However I don't know how to do these substitution with only one "sub" command (I am using 4 "sub" commands).

Do you have any idea how I could improve my script to do that?

Thanks
 

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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). 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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