tldr/pages/linux/rename.md

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# rename
> Rename multiple files.
> NOTE: this page refers to the command from the `util-linux` package.
> For the Perl version, see `file-rename` or `perl-rename`.
> Warning: This command has no safeguards and will overwrite files without prompting.
- Rename files using simple substitutions (substitute 'foo' with 'bar' wherever found):
`rename {{foo}} {{bar}} {{*}}`
- Dry-run - display which renames would occur without performing them:
`rename -vn {{foo}} {{bar}} {{*}}`
- Do not overwrite existing files:
`rename -o {{foo}} {{bar}} {{*}}`
- Change file extensions:
`rename {{.ext}} {{.bak}} {{*.ext}}`
- Prepend "foo" to all filenames in the current directory:
`rename {{''}} {{'foo'}} {{*}}`
- Rename a group of increasingly numbered files zero-padding the numbers up to 3 digits:
`rename {{foo}} {{foo00}} {{foo?}} && rename {{foo}} {{foo0}} {{foo??}}`