Introduce command piping and subshells to your Hubot commands.
# Expand the output from one command into the invocation of another. hubot> hubot decide $(hubot echo first) $(hubot echo second) Definitely "first". # Append the output from one command to the input of another. # Equivalent to "hubot echo before $(hubot echo after)". hubot> hubot echo after | hubot echo before before after
Subcommands can be nested at arbitrary depths. Pipe sequences can be arbitrarily long, and used within subcommands. (Okay, realistically you're limited by the stack depth.)
pushbot> pushbot echo outer-start $(pushbot echo middle-start $(pushbot echo inner) middle-end) outer-end outer-start middle-start inner middle-end outer-end pushbot> pushbot echo 0 $(pushbot echo 2 | pushbot echo 1 )3 pushbot> 0 1 2 3
npm install --save hubot-pipe:
- Require the module in
npm updateand restart your Hubot.