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Ahoy command snippets examples

• Basic Tips and Troubleshooting
• Confirmation
• Controlling Execution
• Docker
• Multiple line commands
• Overriding exiting commands

Basics

The simplest way to start using ahoy is to create a basic .ahoy.yml file in your current directory like so:

ahoyapi: v1
usage: DKAN cli app for development using ahoy.
commands:
  echo:
    usage: Simply echo all the arguments
    # Note that {{args}} will be replaced with the string of all arguments passed 
    cmd: echo "{{args}}"

Now if we simply run ahoy, it will find that file and output the help text and a list of commands.

$ ahoy
NAME:
   ahoy - DKAN cli app for development using ahoy.
USAGE:
   ahoy [global options] command [command options] [arguments...]
COMMANDS:
   echo	Simply echo all the arguments
   init	Initialize a new .ahoy.yml config file in the current directory.
GLOBAL OPTIONS:
   --verbose, -v		Output extra details like the commands to be run. [$AHOY_VERBOSE]
   --file, -f 			Use a specific ahoy file.
   --help, -h			show help
   --version			print the version
   --generate-bash-completion
VERSION:
   0.0.0

Now if we call ahoy -v echo "Do I hear an echo?" ..

ahoy -v echo "Do I hear an echo?"
2016/01/13 14:03:54 ===> AHOY echo from  : echo "Do I hear an echo?"
Do I hear an echo?

Writing More Complex Commands

Let's show an example of using bash scripts AND reusing ahoy commands

ahoyapi: v1
commands:
  confirm:
    cmd: |
      read -r -p "{{args}} [y/N] " response
      if [ $response = y ]; then
        true
      else
        false
      fi
    # This will keep the confirm command from showing up in the help text.
    hide: true
  meaning-of-life:
    cmd: |
      ahoy confirm "Are you sure you want to know?" &&
      # Run this if confirm returns true
      echo The meaning of life is 42 ||
      # Run this if confirm returns false
      echo "OK, you don't want to know, skipping..."

$ ahoy meaning-of-life
Are you sure you want to know? [y/N] y
The meaning of life is 42
 
$ ahoy meaning-of-life
Are you sure you want to know? [y/N] n
OK, you don't want to know, skipping...

Importing commands from other ahoy files.

Another powerful feature is importing commands from other files.

Subcommands

Ahoy allows you to import an entire .yml file full of commands by using import: relative path to file instead of cmd. This is useful to organize commands into groups.

Direct import

You can also import single commands by calling ahoy and setting the path of the .ahoy file you want to use using the -f flag.

#sub.ahoy.yml
ahoyapi: v1
commands:
  whoami:
    #Simple unix command that displays the logged in user.
    cmd: whoami

#.ahoy.yml
ahoyapi: v1
commands:
  # Imports a single ahoy command called whoami and changes the name to direct example
  direct-example:
    usage: Runs the whoami command directly
    cmd: ahoy -f sub.ahoy.yml whoami
  # Imports all commands in the file
  import-example:
    usage: Loads all commands in a subfile.
    import: sub.ahoy.yml

$ ahoy direct-example
fcarey #or whatever your user name is
 
$ ahoy import-example whoami
fcarey #or whatever your user name is
 
#Shows help text for imported subcommands
$ahoy import-example
NAME:
   ahoy - Creates a configurable cli app for running commands.
USAGE:
   ahoy [global options] command [command options] [arguments...]
COMMANDS:
   whoami
   init		Initialize a new .ahoy.yml config file in the current directory.
GLOBAL OPTIONS:
   --verbose, -v		Output extra details like the commands to be run. [$AHOY_VERBOSE]
   --file, -f 			Use a specific ahoy file.
   --help, -h			show help
   --version			print the version
   --generate-bash-completion
VERSION:
   0.0.0