Get a periodic summary of posts from a mattermost chat site since the last summary. It will include all the channels to which you have access in one email, with posts categorized by channel.
- git clone or download.
 - Copy ChatSummary.cfg.php.sample to ChatSummary.cfg.php.
 - Edit ChatSummary.cfg.php as desired.
 - Since it contains password information, secure the file as necessary.
 
- Open the file version.txt using vim. (Other text editors should work but are not officially supported.)
 - Change the number inside the file to a bigger number.
 - Save and quit.
 - To verify the upgrade was successful, type 
cat version.txt. If you don't see your new number then format your hard drive and reinstall your operating system and go back to INSTALLATION. 
- Schedule the ChatSummary.php script using cron or run it manually.
 
- Type 
echo "INSERT PROBLEM DESCRIPTION HERE" > /dev/null