How can I extract multiple 7z files in folder at once in Ubuntu?

7z x "*.7z" this worked for me in ubuntu

Using parallel is rather convenient way with total progress meter for free ;)

ls *.7z | parallel -j+0 --eta '7z x {} >/dev/null'

7za -y x "*.7z" 

The above code worked for me

for arc in *.7z
do
  7zwhatever "$arc"
done