It appears only if you do not regularly use the Terminal and copied a command from email, chat, or another source. Two types ...

Minecraft Java Edition has received the Chaos Cubed update. This significant content drop brings a new underground biome ...

OS blocks dangerous Terminal commands, and a new Apple support document explains what those alerts mean and what to do when ...

All this is assuming you can still boot into Windows 11/10 in a regular way. If you cannot, the only way is to use a bootable USB drive. You can then use the advanced recovery. Reset Windows Format ...