Slkecho is a CLI tool to post message to Slack like echo command.

Install it yourself as:

gem install slkecho

or add this line to your application's Gemfile:

source "https://rubygems.pkg.github.com/okonomi" do
  gem "slkecho"
end

More details: Working with the RubyGems registry - GitHub Docs

slkecho -c <channel> -m <mention> message

or message from stdin:

cat message.txt | slkecho -c <channel> -m <mention>

Slack channel to post message.

See below: https://api.slack.com/methods/chat.postMessage#arg_channel

Search for the target member by email address and adds a mentions to the message. Mention is only valid for members of the channel to which you are posting.

Set user name for message.

See below: https://api.slack.com/methods/chat.postMessage#arg_username

Set user icon image for message by URL.

See below: https://api.slack.com/methods/chat.postMessage#arg_icon_url

Set user image for message by emoji.

See below: https://api.slack.com/methods/chat.postMessage#arg_icon_emoji

Post message as blocks.

See below: https://api.slack.com/methods/chat.postMessage#arg_blocks

Bug reports and pull requests are welcome on GitHub at https://github.com/okonomi/slkecho.

The gem is available as open source under the terms of the MIT License.