Installing and Configuring Pub
Pub is one of the tools in the Dart SDK.
You can use pub through an IDE, such as WebStorm, or through the
pub command-line app, which lives inside the bin directory of the Dart
SDK.
Get pub
Once you have installed the Dart SDK,
add the SDK’s bin directory to your PATH.
On Mac OS:
$ export PATH=$PATH:<installation-directory>/bin
On Windows:
> set PATH=%PATH%;C:<installation-directory>/bin
On Linux:
$ export PATH=${PATH}:<installation-directory>/bin
Optional environment variables
Environment variables allow you to customize pub to suit your needs.
PUB_CACHE:
Some of pub’s dependencies are downloaded to the pub cache.
By default, this directory is located under .pub_cache
in your home directory (on Mac and Linux),
or in %APPDATA%\Pub\Cache (on Windows). (The precise location of the
cache may vary depending on the Windows version.)
You can use the PUB_CACHE environment
variable to specify another location. For more information, see
The system package cache.
PUB_HOSTED_URL:
Pub downloads dependencies from pub.dartlang.org. To specify the
location of a particular mirror server,
use the PUB_HOSTED_URL environment variable. For example:
PUB_HOSTED_URL = http://user:password@177.0.0.1:9999