Slackpipe allows you to easily post messages to Slack from the command line. You might for example use this to post the results of a nightly script to a Slack channel.

You can provide the message to post as a command line argument or you can just pipe the output of another program to it.

$ gem install slackpipe

$ slackpipe -m "hello world"
$ echo "hello world" | slackpipe
$ slackpipe -m "hello world" -c "#general" -f "my robot" -i ":ghost:" -u https://hooks.slack.com/services/ABCDEFGHIJKLMNOPQRSTUVWX`

• You should first Add an Incoming WebHook Configuration on Slack's website and get the Webhook URL they provide for it.
• Next set the SLACKPIPE_URL environment variable to the Webhook URL that Slack assigns you.
  • export SLACKPIPE_URL=https://hooks.slack.com/services/ABCDEFGHIJKLMNOPQRSTUVWX
• If you prefer not using an environment variable you can also provide the URL as a command line option using --url or -u

• SLACKPIPE_URL or --url or -u - (Required) Your Slack Incoming WebHook URL (provided by Slack)
• SLACKPIPE_CHANNEL or --channel or -c - (Optional) The channel to post your message to (e.g. #general or @jane)
• SLACKPIPE_USERNAME or --from or -f - (Optional) The username that the message should come from (e.g. my robot)
• SLACKPIPE_ICON or --icon or -i - (Optional) The icon emoji to use for the message icon (e.g. :ghost:)