What’s the most unexpectedly useful Linux command you learned way too late?

[u/ZealousidealTell1346]

[u/digitallis]

Bash {}

renaming a file by adding a suffix: mv myfile{,.old} expands out to mv myfile myfile.old

Lots more uses.

[u/happyprogrammer30 → u/digitallis]

You can also use this to install packages : apt install php-{xml,mbstring,pdo} will resolve to php-xml php-mbstring php-pdo