Module: Licensed::Shell

Defined in:
lib/licensed/shell.rb

Class Method Summary collapse

Class Method Details

.execute(cmd, *args) ⇒ Object

Executes a command, returning it’s STDOUT on success. Returns an empty string on failure



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# File 'lib/licensed/shell.rb', line 8

def self.execute(cmd, *args)
  output, _, status = Open3.capture3(cmd, *args)
  return "" unless status.success?
  output.strip
end

.success?(cmd, *args) ⇒ Boolean

Executes a command and returns a boolean value indicating if the command was succesful

Returns:

  • (Boolean) 


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# File 'lib/licensed/shell.rb', line 16

def self.success?(cmd, *args)
  _, _, status = Open3.capture3(cmd, *args)
  status.success?
end

.tool_available?(tool) ⇒ Boolean

Returns a boolean indicating whether a CLI tool is available in the current environment

Returns:

  • (Boolean) 


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# File 'lib/licensed/shell.rb', line 23

def self.tool_available?(tool)
  output, err, status = Open3.capture3("which", tool)
  status.success? && !output.strip.empty? && err.strip.empty?
end