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Full Discussion: passing a regex as variable to awk and using that as regular expression for search
Top Forums Shell Programming and Scripting passing a regex as variable to awk and using that as regular expression for search Post 302599168 by Corona688 on Thursday 16th of February 2012 11:01:00 AM
Old 02-16-2012
That's a slight fallacy known as useless use of ls *, it's not ls that understands what * means -- it's the shell itself. That's why * works the same way with every command.

mput is independent of the shell however, and does its own processing of *, but it works the same way as the shell.

You're going to need to modify your shell script I think. Perhaps you can tell it the prefix you want, instead of giving it the entire "abc*.dat", and the shell can replace that itself, and you can feed that into awk in the form you want as well.

To modify your shell script I'll need to actually see it of course.

---------- Post updated at 10:01 AM ---------- Previous update was at 09:55 AM ----------

This kludge might also work, but it's not pretty. It replaces all . by \., all * by .*, prepends ^, and appends $ to turn simple globs into regular expressions. If your awk doesn't have gsub, use nawk.

Code:
awk -v STR="*.dat" 'BEGIN { gsub(/[.]/, "\\.", STR); gsub(/[*]/, ".*", STR); STR="^" STR "$" }; /^-/ && ($9 ~ STR) { print $9 "|" $5 }'

This User Gave Thanks to Corona688 For This Post:
k_bijitesh
 

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LEARN ABOUT MOJAVE

platform::shell

platform::shell(n)					       Tcl Bundled Packages						platform::shell(n)

__________________________________________________________________________________________________________________________________________________

NAME

       platform::shell - System identification support code and utilities

SYNOPSIS

       package require platform::shell ?1.1.4?

       platform::shell::generic shell
       platform::shell::identify shell
       platform::shell::platform shell
_________________________________________________________________

DESCRIPTION

       The platform::shell package provides several utility commands useful for the identification of the architecture of a specific Tcl shell.

       This  package  allows the identification of the architecture of a specific Tcl shell different from the shell running the package. The only
       requirement is that the other shell (identified by its path), is actually executable on the current machine.

       While for most platform this means that the architecture of the interrogated shell is identical to the architecture of  the  running  shell
       this  is  not generally true. A counter example are all platforms which have 32 and 64 bit variants and where a 64bit system is able to run
       32bit code. For these running and interrogated shell may have different 32/64 bit settings and thus different identifiers.

       For applications like a code repository it is important to identify the architecture of the shell which will  actually  run  the  installed
       packages, versus the architecture of the shell running the repository software.

COMMANDS

       platform::shell::identify shell
	      This command does the same identification as platform::identify, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::generic shell
	      This command does the same identification as platform::generic, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::platform shell
	      This command returns the contents of tcl_platform(platform) for the specified Tcl shell.

KEYWORDS

       operating system, cpu architecture, platform, architecture

platform::shell 						       1.1.4							platform::shell(n)
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