Linux command to replace spaces with -(dash) from directories name recursevily?

Question

How to replace spaces with -(dash) from directory name in Linux using command line?

Note: There are hundreds of directories and all of them have sub directories too.

I have tried below command but it return a message 'call: rename from to files...' and all names are still unchanged.

find /home/jjj/ddd -name "* *" -type d | rename 's/ /-/g'

I would like Change the " Directory Name " to " Directory-Name ".

Answer 1

You can try using shell instead rename

find /home/jjj/ddd -depth -name "* *" -type d -print0 | while read -d $'\0' dir; do mv -v "$dir" "${dir// /-}"; done

added -depth to make it proper as per requirement.