Convert DDS to PNG using linux command line

ImageMagick reads but doesn't write DDS. And of course it reads and writes PNG.

From identify -list format:

...
DDS* DDS r-- Microsoft DirectDraw Surface
...
PNG* PNG rw- Portable Network Graphics (libpng 1.2.37)
...

To convert a file (leaving the original intact):

convert test.dds test.png

To convert a directory full:

for file in *.dds
do
    convert "$file" "$(basename "$file" .dds).png"
done