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Full Discussion: Shell Variables passed to awk to return certain rows
Top Forums Shell Programming and Scripting Shell Variables passed to awk to return certain rows Post 302948462 by Don Cragun on Monday 29th of June 2015 07:53:16 PM
Old 06-29-2015
You need a -v option for each variable you're setting; not just the first one.

If there is any chance that string_to_search could contain any whitespace characters or characters that have special meaning to the shell, it will also need to be quoted.

It is generally a good idea to quote all shell variable expansions, but I will assume for now that your script has already verified that $search_col_pos and $search_str_len expand to numeric strings.

And, inside an awk script, putting a variable name in quotes will try to match against the name of the variable instead of the contents of the variable.

Try:
Code:
awk -v search_col_pos=$search_col_pos -v search_str_len=$search_str_len -v string_to_search="$string_to_search" 'substr($0, search_col_pos, search_str_len) == string_to_search' test.txt

If that still doesn't work, show us what happens with the above corrections.
Last edited by Don Cragun; 06-29-2015 at 08:55 PM.. Reason: Fix typos.
This User Gave Thanks to Don Cragun For This Post:
pchang
 

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set_color

set_color(1)							       fish							      set_color(1)

NAME

       set_color - set_color - set the terminal color

set_color - set the terminal color
   Synopsis
       set_color [-v --version] [-h --help] [-b --background COLOR] [COLOR]

   Description
       Change the foreground and/or background color of the terminal. COLOR is one of black, red, green, brown, yellow, blue, magenta, purple,
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Version 1.23.1							  Sun Jan 8 2012						      set_color(1)
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