vagrant

https://github.com/mitchellh/vagrant

Ruby

Vagrant is a tool for building and distributing development environments.

Vagrant::Environment#lock

This acquires a process-level lock with the given name.

The lock file is held within the data directory of this environment,
so make sure that all environments that are locking are sharing
the same data directory.

This will raise Errors::EnvironmentLockedError if the lock can't
be obtained.

Source | Google | Stack overflow

Edit

git clone [email protected]:mitchellh/vagrant.git

cd vagrant

open lib/vagrant/environment.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Vagrant--Environment-lock-for-pr

# Commit to git

git add lib/vagrant/environment.rbgit commit -m "better docs for Vagrant::Environment#lock"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-Vagrant--Environment-lock-for-pr

hub pull-request

# Celebrate!