Replace spaces in all files in given location

stripspaces.sh

if [ -n "$1" ]
then
  if [ -d "$1" ]
  then
    cd "$1"
  else
    echo invalid directory
    exit
  fi
fi

for i in *
do
  OLDNAME="$i"
  NEWNAME=`echo "$i" | tr ' ' '_'`
  if [ "$NEWNAME" != "$OLDNAME" ]
  then
    TMPNAME="$i"_TMP
    echo ""
    mv -v -- "$OLDNAME" "$TMPNAME"
    mv -v -- "$TMPNAME" "$NEWNAME"
  fi
  if [ -d "$NEWNAME" ]
  then
    echo Recursing lowercase for directory "$NEWNAME"
    $0 "$NEWNAME"
  fi
done