The network reset tool is found on the Network & Internet screen.

Expand the Start Menu and search for Settings. Open the Settings window and choose Network & Internet.

In the left-hand column, Status should be selected. If it isn’t, select it.

At the bottom of the Change your network settings list, choose Network Reset.

Select Reset Now to initiate the reset process. Be sure to choose Yes on the prompt confirming the reset.

When the reset is complete, your computer will restart. All of the network adapters will be reinstalled and network settings returned to their default values. This process might uninstall VPN or virtual switch software. With everything wiped, you can start a new network connection.

printenv

This will print something like this:

...
rvm_bin_path=/Users/josephtyler/.rvm/bin
VIRTUALENVWRAPPER_SCRIPT=/usr/local/bin/virtualenvwrapper.sh
VIRTUALENVWRAPPER_PROJECT_FILENAME=.project
TERM_PROGRAM=Apple_Terminal
GEM_HOME=/Users/josephtyler/.rvm/gems/ruby-2.2.0
SHELL=/bin/bash
...

Still using printenv if you specify a name, then the value is printed (supposing it exists).

printenv RUBY_VERSION

ruby-2.2.0

While in normal mode, type:

:g/^$/d

Here’s a breakdown of this command.

So when you put it all together, you find all blank lines globally across the whole file, and delete them.