slack-alert.sh

#!/bin/sh

# Get this from the slack account page where you created the webhook.
WEBHOOK_URL=""
# Set the name of the channel that you set up the webhook to message you in.
CHANNEL="#copperbot"
# Set the name of the user that you set up the webhook under.
USER="copperbot"

# If the first argument is "notify", then mention the whole channel.
# Also strip out "notify " from the message to send.
if [ "$1" = "notify" ]; then
   PREFIX="<!channel> "
   TEXT="$PREFIX $(sed -e 's/^notify //g' <<<"$@")"
else
   TEXT="$@"
fi

curl -s -X POST \
   --data "{\"text\": \"$TEXT\", \"channel\": \"$CHANNEL\", \"username\": \"$USER\"}" \
   $WEBHOOK_URL