Re^2: setenv in perl

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Re^3: setenv in perl by LanX (Saint) on Jul 09, 2018 at 16:00 UTC
you can but it doesn't make sense, since %ENV is by definition automatically exported. lanx@ubuntu:~$ perl -E '$ENV{TEST}=TRUE; say `echo \$TEST` ' TRUE [download] Again, you can only effect the child process. ( update: please note you have three different processes in this example: `~$` Bash > Perl `-E '...'` > `Bash` ) If you want to effect the parent process, you need to return text information which is either eval'ed or source'd (when put into a file). lanx@ubuntu:~$ eval `perl -E 'say q{export TEST=TRUE}'` lanx@ubuntu:~$ echo $TEST TRUE [download] In other words the parent process always keeps full control of the environment. Cheers Rolf _{(addicted to the Perl Programming Language :) Wikisyntax for the Monastery FootballPerl is like chess, only without the dice}	[reply] [d/l] [select]

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Re^3: setenv in perl
by LanX (Saint) on Jul 09, 2018 at 16:00 UTC

lanx@ubuntu:~$ perl -E '$ENV{TEST}=TRUE; say `echo \$TEST` '
TRUE
[download]

Again, you can only effect the child process.

( update: please note you have three different processes in this example: ~$ Bash > Perl -E '...' > `Bash` )

If you want to effect the parent process, you need to return text information which is either eval'ed or source'd (when put into a file).

lanx@ubuntu:~$ eval `perl -E 'say q{export TEST=TRUE}'`
lanx@ubuntu:~$ echo $TEST
TRUE
[download]

In other words the parent process always keeps full control of the environment.

Cheers Rolf
_{(addicted to the Perl Programming Language :)

Wikisyntax for the Monastery
FootballPerl is like chess, only without the dice}