# ralf : Rename A Lot of Files
       
       ralf is a tiny command line tool to rename a lot of files.
       Use regex to match a pattern you want to change and set the replacement.
       
       ## Download
       
  HTML https://git.sr.ht/~prx/ralf
   BIN ./ralf.tgz
       
       ## Install
       
       run make
       
       ## Usage
       
       Pass files to rename as argument to ralf.
       Usually, you can glob all files in the current directory.
       
       ```
       > ralf *
       ```
       
       ## Example
       
       ```
       > ralf *
       a
       aaaaa
       b
       bar
       c
       foo
       xxxx
       ---
       Pattern to replace: [a-c]
       with: z
       ---
       a     -> z
       aaaaa -> zzzzz
       b     -> z
       bar   -> zzr
       c     -> z
       foo   -> foo
       xxxx  -> xxxx
       ---
       OK? (Return, or ctrl-c to cancel)
       
       a     -> z
       aaaaa -> zzzzz
       ralf: z already exist, b is left unchanged
       bar   -> zzr
       ralf: z already exist, c is left unchanged
       bye o/
       ```
       
       ## See also
       re_format(7)