Answers for "replace space with underscore command line in file name"

replace filename space with underscore bash

for file in *; do mv "$file" `echo $file | tr ' ' '_'` ; done

linux replace spaces with underscore from all files in directory

find . -type f -name "* *" -exec bash -c 'mv "$0" "${0// /_}"' {} \;

none

find . -type f -name "* *" -exec bash -c 'mv "$0" "${0// /_}"' {} \;