unix find command ending with '+' character -

while perusing aws docs noticed following command:

find /var/www -type d -exec sudo chmod 2775 {} +

i'm familiar \; ending exec in find string have never seen '+'. can shed light on this?

thanks!

if use plus (+) instead of escaped semicolon, arguments grouped before being passed command. example:

$ find . -type f -exec echo {} + . ./bar.txt ./foo.txt

in case, 1 child process (echo . ./bar.txt ./foo.txt)is created more efficient, because avoids fork/exec each single argument.

using escaped semi-colon, child process created each argument.

$ find . -type f -exec echo {} \; .  ./bar.txt ./foo.txt

Silver