tmate.sh

#!/bin/bash

set -e

SLACK_WEBHOOK_URL=                                                                                                                        
DEFAULT_EMOJI=:slack:
CHANNEL=${1:-#general}
AUTHOR="Some user"

tmate -S /tmp/tmate.sock new-session -d && tmate -S /tmp/tmate.sock wait tmate-ready
TMATE_URL=`tmate -S /tmp/tmate.sock display -p '#{tmate_ssh}'`


PAYLOAD='payload={"channel": "'$CHANNEL'", "username": "'$AUTHOR'", "text": "I have setup a new tmate session for you to join. Here is the url: '$TMATE_URL'", "icon_emoji": "'$DEFAULT_EMOJI'"}'

curl -sS -o /dev/null -X POST --data-urlencode  "$PAYLOAD" $SLACK_WEBHOOK_URL

tmate -S /tmp/tmate.sock attach