rename - renames multiple files
rename [ __-v__? perlexpr [ ''files''?
rename renames the filenames supplied according to
the rule specified as the first argument. The
perlexpr argument is a Perl expression which is
expected to modify the $_ string in Perl for at
least some of the filenames specified. If a given filename
is not modified by the expression, it will not be renamed.
If no filenames are given on the command line, filenames
will be read via standard input.
For example, to rename all files matching *.bak to
strip the extension, you might say
rename 's/e.bak$//' *.bak
To translate uppercase names to lower, you'd use
rename 'y/A-Z/a-z/' *
Verbose: print names of files successfully
No environment variables are used.
If you give an invalid Perl expression you'll get a syntax
The original rename did not check for the existence
of target filenames, so had to be used with care. I hope
I've fixed that (Robin Barker).