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Top Forums Shell Programming and Scripting Passing Value from Shell to Perl Post 302143940 by hcbhatt on Monday 5th of November 2007 12:47:16 PM
Old 11-05-2007
Quote:
Originally Posted by gus2000
Environment variables in perl are accessed via the $ENV list (hashed array):

Code:
# typeset -x MY_VARIABLE="SomeValue"
# perl -e 'print $ENV{"MY_VARIABLE"}'
SomeValue

Of course, you could write the whole script in perl, but...baby steps. Smilie

Note that the variable(s) must be exported. I used "typeset -x" instead of "export" since I regularly typeset all the variables used in scripts. It's a good habit to adopt, since variables can be inherited if they are not typeset.

Wanna see all your scripts blow up? Try "typeset -r i" at the prompt before running them and watch what happens! This makes "$i" read only...unless the script typesets it.
Thanks! It worked.

I'll read further on typeset, as you mention it to be good coding habit ... and also especially after reading usage of typeset -r i

Thanks again to all who replied !
 

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CPANPLUS::Shell(3perl)					 Perl Programmers Reference Guide				    CPANPLUS::Shell(3perl)

NAME
CPANPLUS::Shell - base class for CPANPLUS shells SYNOPSIS
use CPANPLUS::Shell; # load the shell indicated by your # config -- defaults to # CPANPLUS::Shell::Default use CPANPLUS::Shell qw[Classic] # load CPANPLUS::Shell::Classic; my $ui = CPANPLUS::Shell->new(); my $name = $ui->which; # Find out what shell you loaded $ui->shell; # run the ui shell DESCRIPTION
This module is the generic loading (and base class) for all "CPANPLUS" shells. Through this module you can load any installed "CPANPLUS" shell. Just about all the functionality is provided by the shell that you have loaded, and not by this class (which merely functions as a generic loading class), so please consult the documentation of your shell of choice. BUG REPORTS
Please report bugs or other issues to <bug-cpanplus@rt.cpan.org<gt>. AUTHOR
This module by Jos Boumans <kane@cpan.org>. COPYRIGHT
The CPAN++ interface (of which this module is a part of) is copyright (c) 2001 - 2007, Jos Boumans <kane@cpan.org>. All rights reserved. This library is free software; you may redistribute and/or modify it under the same terms as Perl itself. SEE ALSO
CPANPLUS::Shell::Default, CPANPLUS::Shell::Classic, cpanp perl v5.14.2 2014-09-29 CPANPLUS::Shell(3perl)
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