#!/bin/sh

if [ $# -eq 0 ]
then
    echo usage: $0 FILENAME ... > /dev/stderr
    exit 1
fi

while [ $# -gt 0 ]
do
    NEWNAME=$(echo $1 | tr ' ' '_')
    if [ "$1" != $NEWNAME ]
    then
        eval /bin/mv "\"$1\"" $NEWNAME
    fi
    shift
done
exit 0