Send a message in a slack channel using just curl.

slacko.sh

#!/bin/bash
commit_hash=$(git rev-parse HEAD | head -c8)
text="*[DEPLOY] - ($commit_hash) I have made a new deploy for Project! :bomb:*"
token="YOUR_TOKEN"
slackhost="YOUR_SLACK_HOST"
channel="CHANNEL_NAME"
escapedText=$(echo "$text" | sed 's/"/\"/g' | sed "s/'/\'/g" )
json="{\"channel\": \"#$channel\", \"text\": \"$escapedText\",\"icon_emoji\":\":apple:\",\"username\":\"My Bot\"}"

# Example of complex data
#--data 
# '{
# "channel": "",
# "text": "",
# "attachments": [{
#       "text":"",
#       "fallback":"",
#       "color":"#3AA3E3",
#       "attachment_type":"default",
#       "callback_id":"select_simple_1234",
#       "actions":[{
#           "name":"winners_list",
#           "text":"Who should win?",
#           "type":"select",
#           "data_source":"users"
#       }]
# }]
# }'
        
curl \
	-X POST \
	-H "Authorization: Bearer $token" \
	-H 'Content-type: application/json' \
	--data "$json" \
	https://slack.com/api/chat.postMessage