Run a command; post it and its standard input, output, and error to Slack. It's a tool for people that collaborate on UNIX servers.

First, install slack.sh as /usr/local/bin/slack:

sudo make install

Next, visit https://my.slack.com/services/new and create a new Incoming Webhook. Copy Your Unique Webhook URL and put it in your shell's environment:

export SLACK_WEBHOOK_URL="https://TEAM.slack.com/services/hooks/incoming-webhook?token=TOKEN"

Put this in your shell's ~/.profile or similar and make sure you source that file with . ~/.profile before you run slack.

slack will post the command-line plus standard output and standard error to Slack:

slack echo "Hello, world."

It will also capture standard input if you tell it to:

slack --stdin mysql <"backfill.sql"

If you like, the output can be made into a nice pretty Slack attachment:

slack --attach echo "Hello, world."

And of course, you can point it at any channel, not just the one you configure as the default:

slack --channel="#general" echo "Hello, world."