How to replace the spaces in filenames with underscore

replace_the_spaces_in_filenames_with_underscore.md

How to replace the spaces in filenames with underscore

TL;DR

for name in *; do mv "$name" "${name// /_}"; done

Source

How to replace the spaces in filenames with underscore [duplicate]: https://unix.stackexchange.com/questions/321448/how-to-replace-the-spaces-in-filenames-with-underscore/321456

Origin reply

Into bash for all the files into folder.

for name in *; do mv "$name" "${name// /_}"; done

The ${name/pattern/replace} replaces pattern to replace (Bash Parameter Expansion). If pattern starts with / (here pattern is / + Space), it replaces all the occurencies. Then mv renames file from name to new name with replaced spaces.

edited Nov 6 '16 at 15:52 and answered Nov 6 '16 at 15:46 by Konstantin Morenko