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Full Discussion: Perl - pass shell-vars into perl for input loop
Top Forums Shell Programming and Scripting Perl - pass shell-vars into perl for input loop Post 302405686 by alex_5161 on Friday 19th of March 2010 02:11:12 PM
Old 03-19-2010
Quote:
Originally Posted by durden_tyler
Is this what you are looking for ?
Yes, it is exactly what my example tying to do.
But I am looking for more general way to pass vars.
This way I should escape all special characters that shell would interpret to be passed to perl.
For example:
Code:
v1=25; 
v2=30;
perl -ne "chomp; print \"\\nLine is:\$_\; \\\$v1=$v1\; \\\$v2=$v2\"; \
  print \"\\n summ=\".($v1+$v2); "  infl.txt

(I think the '-l' is not necessary or it is?)
This way it works, but it is uglee and hard to prepare and debug!

---------- Post updated at 01:11 PM ---------- Previous update was at 12:49 PM ----------

Just found some simplifying with the double-qoutes: it is possible to comby the perl command by multiple quoted strings:
Code:
> v1=25;
> v2=30;
> perl -ne 'BEGIN{$v1='"$v1"'; $v2='"$v2"';} chomp; print "$_ | summ=".($v1+$v2)."\n"' input.txt
line one | summ=55
line two | summ=55
third line  | summ=55
one more line | summ=55
>

This is usefull already, but it is still way around!
It should be a way to do it simpler!

Anybody know?
 

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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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