Question

Hey, not 100% sure what this error means.

% for f in "*" ; do cp $f ../backup/backup$f ; done
cp: ../backup/backup* not found

The purpose is to copy all the files into a folder into a backup folder and rename the files to backup.

Answer 1

The * shouldn’t be in quotes:

for f in * ; do cp $f ../backup/$f ; done

When you use quotes this prevents the shell from expanding it, so it is looking for a file called *, not all files in the directory which is what you meant.