Perl maintains environment variables in a special hash named %ENV. For when this access method is inconvenient, the Perl module "Env" allows environment variables to be treated as scalar or array variables. The "Env::import()" function ties environme...

This module provides a Perl API for getenv(3), setenv(3) and unsetenv(3). It also can return all the "environ" variables. You also can use "setenv_multi" and "getenv_multi" for bulk operations with environment. Sometimes Perl invokes modules with und...

Usefull in cases if the program/script should behave in slightly different way depending on if it's run on developers machine, user acceptance test server, staging server or a production server. There can be 4 running environments: qw{ development ua...

This package supplies variables that are "tied" to environment variables like 'PS1' and 'PS2', if read it takes the contents of the variable as a format string like the ones bash(1) uses to format the prompt. It is intended to be used in combination ...

App::Env presents a uniform interface to initializing environments for applications which require special environments. App::Env only handles the loading, merging, and caching of environments; it does not create them. That is done within modules for ...

Makes a copy of %ENV (possibly from a previous copy). Provides choice of whitelist (retaining only specified values), blacklist (removing specified values), and augmenting with a list of key value pairs that are determined by the user program. Typica...

Env::Path presents an object-oriented interface to *path variables*, defined as that subclass of *environment variables* which name an ordered list of filesystem elements separated by a platform-standard *separator* (typically ':' on UNIX and ';' on ...

Env::Bash enables perl access to ALL bash environment variables ( including those that may be bash arrays ). But you say: "That doesn't make sense; perl already has the %ENV hash. Why not use that?". Well, please run: $ perl -e 'print "$_ = $ENV{$_}\...

This module searches the first non-empty environment variable with one of the names given at import time, parses it like the Unix shell (using Text::ParseWords::shellwords) and insert the result at the beginning of @ARGV. This module is helpful to im...

Functions env_ok( NAME, VALUE ) Ok if the environment variable NAME is VALUE. POD ERRORS Hey! The above document had some coding errors, which are explained below: Around line 5: =over without closing =back...

This module can be used to get and set some kind of "environment" variables shared between all papp applications. When inside a PApp environment (e.g. inside a papp program) this module uses PApp's state database handle. Outside the module it tries t...

This module exports the requested environment variables from %ENV as constants, represented by subroutines that have the same names as the specified environment variables. Specification of the environment values to export may be by explicit name, she...

Config::ENV is for switching various configurations by environment variable....

New Perl programmers are often confused about how the "system" call interacts with the environment, and they wonder why this code: system('export foo=bar'); system('echo $foo'); behaves differently from system('export foo=bar; echo $foo'); or why whe...

Set Heroku add-on specific environment variables from Heroku config environment variables to the respective default variables. For example "Env::Heroku::Pg" will unpack the DATABASE_URL env "postgres://user:password@hostname:port/database" to env var...

Env::Sanctify is a module that provides lexically scoped manipulation and sanctification of %ENV. You can specify that it alter or add additional environment variables or remove existing ones according to a list of matching regexen. You can then eith...

This class loads the catmandu.*.pl, catmandu.*.json, catmandu.*.yml and catmandu.*.yaml file from all provided load_paths. Programmers are advised *not* to use this class directly but use the equivalent functionality provided in the Catmandu package:...