chef

https://github.com/opscode/chef

Ruby

A systems integration framework, built to bring the benefits of configuration management to your entire infrastructure.

Chef::Provider::PowershellScript#wrapper_script

A wrapper script is used to launch user-supplied script while
still obtaining useful process exit codes. Unless you
explicitly call exit in Powershell, the powershell.exe
interpreter returns only 0 for success or 1 for failure. Since
we'd like to get specific exit codes from executable tools run
with Powershell, we do some work using the automatic variables
$? and $LASTEXITCODE to return the process exit code of the
last process run in the script if it is the last command
executed, otherwise 0 or 1 based on whether $? is set to true
(success, where we return 0) or false (where we return 1).

Source | Google | Stack overflow

Edit

git clone [email protected]:opscode/chef.git

cd chef

open lib/chef/provider/powershell_script.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Chef--Provider--PowershellScript-wrapper_script-for-pr

# Commit to git

git add lib/chef/provider/powershell_script.rbgit commit -m "better docs for Chef::Provider::PowershellScript#wrapper_script"

# Open pull request

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

hub fork

git push <your name> -your-name--update-docs-Chef--Provider--PowershellScript-wrapper_script-for-pr

hub pull-request

# Celebrate!