On: Don't copy paste from a website to a terminal

[amelius]

If only operating systems offered a way to undo changes, then this would be mostly a non-issue.

[jeeyoungk → amelius]

you can't undo sending network packets containing sensitive information to somewhere else.

[andreasvc → amelius]

What good would undo do you if you didn't realize something bad happened?

[hk__2 → amelius]

How would you free up space on your disk if for every removed file the OS has to keep a copy in order to let you undo the removal?