Badges update automatically and link to the plugin page on MineUniverse.
This is a very simple plugin that logs all commands with the actual date and time to a separated log file in the server's main folder and to the console. Players with the permission receive a message when someone tries to perform a command.
After some downtime, I continued playing minecraft and therefore decided to also continue updating this plugin.

commandlog.notice: The player receives a message when someone performs a command.
commandlog.clearlog: The player can clear the commands.log file.
Thank you for that video and sorry that it took so long for me to notice, but Mojang really disgusted me out of the game for a long time... :)