Getter and setter to variables for Linux like command line.
$ git clone https://github.com/wxqee/get-set-var.git get-set-var
$ cd get-set-var/
$ npm install ./ -g
Set env GSV_DB_NAME can help to identify which db is about to use.
$ export GSV_DB_NAME=<db-name>
$ get-set-var-init
$ get-set-var <variable-to-get>
$ get-set-var <variable-to-set> <value>