curl http://commons.wikimedia.org/wiki/Sovereign-state_flags > z

curl http://commons.wikimedia.org/wiki/Sovereign-state_flags | egrep -o 'src="//upload.wikimedia.org/wikipedia/commons/thumb/\w+/\w+/Flag_of_[^/]+.svg' z | sed 's|src="//||' | sed 's|/thumb||' > flag_files.txt

for i in `cat flag_files.txt`; do curl $i -O; done