You need to decide on a channel, find out the channel id. To do this visit https://slack.com/api/conversations.list?limit=50 where you'll see all available channels.
As a first step you will need to set up an Incoming Slack Webhook. At the end of this process you will get the credentials below.
$ git clone https://github.com/cmichi/slack-emoji-reactions-histogram.git
$ cd slack-emoji-reactions-histogram/
$ cat > .env
export CLIENT_ID="..."
export CLIENT_SECRET="..."
export VERIFICATION_TOKEN="..."
export OAUTH_TOKEN="xoxp-..."
export CHANNEL_ID="..."
export CHANNEL_NAME="company-general"
export POST_TO_CHANNEL_NAME="company-general"
^D
$ . .env
$ ./reaction-stats.sh
In order to set this up as a bi-weekly cronjob:
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
# each second wednesday at 13 utc
0 13 * * 3 [ `expr \`date +\%s\` / 86400 \% 2` -eq 0 ] && /bin/bash /home/michi/reaction-stats.sh
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2018 Michael Mueller, http://micha.elmueller.net/
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