I often run into a situation where I want to rename a file but it’s somewhere at the end of a long path, like this
mv /long/path/to/where/my/file/lives/file.txt /long/path/to/where/my/file/lives/other.txt and it’s cumbersome to write the path every time.
I asked for help in Koodiklinikka’s wonderful community and got the help: brace expansion
mv /long/path/to/where/my/file/lives/{file,other}.txt So much better!