Rename Files and Directories (Add Prefix)

Question

I would like to add prefix on all folders and directories.

Example:

I have

Hi.jpg
1.txt
folder/
this.file_is.here.png
another_folder.ok/

I would like to add prefix "PRE_"

PRE_Hi.jpg
PRE_1.txt
PRE_folder/
PRE_this.file_is.here.png
PRE_another_folder.ok/

Regards,

Answer 1

Thanks to Peter van der Heijden, here's one that'll work for filenames with spaces in them:

for f in * ; do mv -- "$f" "PRE_$f" ; done

("--" is needed to succeed with files that begin with dashes, whose names would otherwise be interpreted as switches for the mv command)