[ikornaselur]

Most of my colleagues used zsh and oh-my-zsh, and as far as I can remember, oh-my-zsh has a mechanism to check for updates every 14 days.

I would then set their .zshrc or whatever to end with

    echo "sleep 0.1" >> ~/.zshrc

so that every time they opened as hell, it would take 100ms longer to run. It would usually take them up to 1-2 second of startup time to figure out what was wrong.

Now my favourite part was that I edited the oh-my-zsh update script to actually echo the original echo line into their ~/.zshrc file, so that even if they figured out what was happening and were very vigilant with locking their laptop, it would happen again within the next 14 days. Loved that.