rename 's/ACDC/AC-DC/' *.xxx
de man rename
DESCRIPTION
"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
$_ string in Perl for at least some of the filenames specified. If a given filename is not
modified by the expression, it will not be renamed. If no filenames are given on
the command line, filenames will be read via standard input.
Por exemplo, para renomear todos os arquivos que combinam "* .bak" para remover a extensão, você pode dizer
rename 's/\.bak$//' *.bak
Para traduzir nomes em maiúsculas para menores, você usaria
rename 'y/A-Z/a-z/' *