A shell script generator.
Linecook helps to make scripts more manageable by allowing you to compose them from ERB helpers and attributes files. Scripts can be written at a higher level, and easily reconstructed when something changes. Scripts can be compiled in place, or built into packages that can be used, for example, to provision servers.
Layout a project.
mkdir -p attributes helpers packages recipes
Define attributes.
cat > attributes/chalkboard.yml <<DOC n: 3 color: blue message: I will not manually configure my server DOC
Define a helper.
mkdir -p helpers/chalkboard
cat > helpers/chalkboard/echo_in_color.erb <<DOC
Echo a string in color.
(color, str)
color_codes = Hash[*%W{
black 0;30 red 0;31
white 1;37 green 0;32
light_gray 0;37 blue 0;34
}]
--
echo -e '\033[<%= color_codes[color.to_s] %>m<%= str %>\033[0m'
DOC
Use both in a recipe.
cat > recipes/chalkboard.rb <<DOC attributes "chalkboard" helpers "chalkboard" attrs['n'].times do echo_in_color attrs['color'], attrs['message'] end DOC
Build the recipe.
linecook build -c recipes/chalkboard.rb
Check the packages directory to see the resulting script.
cat packages/chalkboard/run echo -e '\033[0;34mI will not manually configure my server\033[0m' echo -e '\033[0;34mI will not manually configure my server\033[0m' echo -e '\033[0;34mI will not manually configure my server\033[0m'
Linecook is available as a gem.
gem install linecook
Install dependencies using Bundler:
gem install bundler bundle install
Build a test VM using the VM Setup doc, and make a config/ssh file that can can connect to it using the default Host (ie Host *). If you didn’t customize anything, then you can use ‘config/ssh.example’ directly. When setup correctly this prints ‘success’ with any HOST:
ssh -F config/ssh [HOST] -- 'echo success'
Now run the tests:
rake test
Report issues and submit pull requests on GitHub.
- Developer
- License