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Programming language: Crystal
License: MIT License
Tags: Misc    

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README

shell

Small simplistic helper class for executing shell commands in Crystal:

  • run command,
  • exit if it fails,
  • return STDOUT of the command;
  • optionally
    • allow to ignore failure
    • return STDERR of failed command.

Installation

Add this to your application's shard.yml:

dependencies:
  shell:
    github: dmytro/shell.cr

Usage

require "shell"

Output of the shell command is available through #stdout and #stderr methods, numeric value of the exit status returned by the function #run.

Simplest usage of the #run method:

puts Shell.run("ls").stdout

If command fails Shell raises exception, but this behaviour can be overridden by fail_on_error variable:

puts Shell.run("command_with_non_zero_status", fail_on_error: false).stderr

Contributing

  1. Fork it ( https://github.com/dmytro/shell/fork )
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create a new Pull Request

Contributors

  • dmytro Dmytro Kovalov - creator, maintainer