I don't think you are having a problem with environment inheritance, you must be having a problem with something else. Consider
#include <stdlib.h>
#include <stdio.h>
int main( int argc, char **argv ) {
char *arg = *++argv;
printf( "%s is %s\n", arg, getenv(arg) );
exit(0);
}
which is named env-echo.c, which you should compile with cc -o env-echo env-echo.c. You can then use this script:
#! /usr/bin/perl -w
use strict;
my $var = shift || 'FOO';
my $value = shift || 'bar';
$ENV{$var} = $value;
system "./env-echo $var";
And if I run that as
./env-change HOME /tmp the child process prints out
HOME is /tmp. What does this code do when you run it on your system?
--g r i n d e r
just another bofh
print@_{sort keys %_},$/if%_=split//,'= & *a?b:e\f/h^h!j+n,o@o;r$s-t%t#u';
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
| |
For: |
|
Use: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.