line = Cocaine::CommandLine.new("echo", "hello 'world'")
line.command # => "echo hello 'world'" 
line.run # => "hello world\n" 

line = Cocaine::CommandLine.new("convert", ":in -scale :resolution :out",
                                :in => "omg.jpg",
                                :resolution => "32x32",
                                :out => "omg_thumb.jpg")
line.command # => "convert 'omg.jpg' -scale '32x32' 'omg_thumb.jpg'"

line = Cocaine::CommandLine.new("cat", ":file", :file => "haha`rm -rf /`.txt")
line.command # => "cat 'haha`rm -rf /`.txt'"

line = Cocaine::CommandLine.new("cat", ":file", :file => "ohyeah?'`rm -rf /`.ha!")
line.command # => "cat 'ohyeah?'\\''`rm -rf /`.ha!'"

line = Cocaine::CommandLine.new("noisy", "--extra-verbose", :swallow_stderr => true)
line.command # => "noisy --extra-verbose 2>/dev/null"

# ... and on Windows...
line.command # => "noisy --extra-verbose 2>NUL"

line = Cocaine::CommandLine.new("git", "commit")
begin
  line.run
rescue Cocaine::ExitStatusError => e
  e.message # => "Command 'git commit' returned 1. Expected 0"
end

line = Cocaine::CommandLine.new("/usr/bin/false", "", :expected_outcodes => [0, 1])
begin
  line.run
rescue Cocaine::ExitStatusError => e
  # => You never get here!
end

line = Cocaine::CommandLine.new("lolwut")
begin
  line.run
rescue Cocaine::CommandNotFoundError => e
  e # => the command isn't in the $PATH for this process.
end

Cocaine::CommandLine.path = "/opt/bin"
line = Cocaine::CommandLine.new("lolwut")
line.command # => "lolwut", but it looks in /opt/bin for it.

    FileUtils.rm("/opt/bin/lolwut")
    File.open('/usr/local/bin/lolwut') {|f| f.write('echo Hello') }
    Cocaine::CommandLine.path = ["/opt/bin", "/usr/local/bin"]
    line = Cocaine::CommandLine.new("lolwut")
    line.run # => prints 'Hello', because it searches the path

line = Cocaine::CommandLine.new("/opt/bin/lolwut")
line.command # => "/opt/bin/lolwut"

line = Cocaine::CommandLine.new("echo", ":var", :var => "LOL!", :logger => Logger.new(STDOUT))
line.run # => Logs this with #info -> Command :: echo 'LOL!'

Cocaine::CommandLine.logger = Logger.new(STDOUT)
Cocaine::CommandLine.new("date").run # => Logs this -> Command :: date