tldr/pages/linux/perl-rename.md

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# rename
> Rename multiple files.
> NOTE: this page refers to the command from the `perl-rename` Arch Linux package.
> More information: <https://manned.org/rename>.
- Rename files using a Perl Common Regular Expression (substitute 'foo' with 'bar' wherever found):
`rename {{'s/foo/bar/'}} {{*}}`
- Dry-run - display which renames would occur without performing them:
`rename -n {{'s/foo/bar/'}} {{*}}`
- Force renaming even if the operation would remove existing destination files:
`rename -f {{'s/foo/bar/'}} {{*}}`
- Convert filenames to lower case (use `-f` in case-insensitive filesystems to prevent "already exists" errors):
`rename 'y/A-Z/a-z/' {{*}}`
- Replace whitespace with underscores:
`rename 's/\s+/_/g' {{*}}`