rename [options] expression replacement file...
rename will rename the specified files by replacing the first occurrence of expression in their name by replacement.
-s,--symlink Do not rename a symlink but its target.
-v,--verbose Show which files were renamed, if any.
-n,--no -act Do not make any changes; add --verbose to see what would be made.
-o,--no -overwrite Do not overwrite existing files. When --symlink is active, do not overwrite symlinks pointing to existing targets.
-i,--interactive Ask before overwriting existing files.
-V,--version Display version information and exit.
-h,--help Display help text and exit.
Given the files foo1, ...,foo9,foo10, ...,foo278, the commands
rename foo foo00 foo? rename foo foo0 foo??
will turn them into foo001, ...,foo009,foo010, ...,foo278. And
rename .htm .html *.htm
will fix the extension of your html files. Provide an empty string for shortening:
rename '_with_long_name' '' file_with_long_name.*
will remove the substring in the filenames.
The renaming has no safeguards by default or without any one of the options --no-overwrite , --interactive or --no -act . If the user has permission to rewrite file names, the command will perform the action without any questions. For example, the result can be quite drastic when the command is run as root in the /lib directory. Always make a backup before running the command, unless you truly know what you are doing.
As most standard utilities rename can be used with a terminal device (tty in short) in canonical mode, where the line is buffered by the tty and you press ENTER to validate the user input. If you put your tty in cbreak mode however, rename requires only a single key press to answer the prompt. To set cbreak mode, run for example:
sh -c 'stty -icanon min 1; "$0" "$@"; stty icanon' rename -i from to files
0 all requested rename operations were successful
1 all rename operations failed
2 some rename operations failed
4 nothing was renamed
64 unanticipated error occurred
The rename command is part of the util-linux package and is available from https://www.kernel.org/pub/linux/utils/util-linux/.