そういやDebianはprenameとかいう名前になってんだっけね?
古典的なLinuxはこのrenameなのかな。

/*
* rename.c - aeb 2000-01-01
*
--------------------------------------------------------------
#!/bin/sh
if [ $# -le 2 ]; then echo call: rename from to files; exit; fi
FROM="$1"
TO="$2"
shift
shift
for i in $@; do N=`echo "$i" | sed "s/$FROM/$TO/g"`; mv "$i" "$N"; done
--------------------------------------------------------------
* This shell script will do renames of files, but may fail
* in cases involving special characters. Here a C version.
*/