The multi-hccap support is explained here: http://hashcat.net/wiki/doku.php?id=hccap
Note: for performance reasons you cannot mix wpa2 and wpa (also see https://hashcat.net/trac/ticket/222#comment:4 )
So the answer is you create 1 single file that includes all the networks (one after the other), if you need to deal w/ wpa2 and wpa, just look at the link above how to split them correctly.
in linux you can just run
cat *.hcmask > all.hcmask
if wpa (X)OR wpa2 only
Note: for performance reasons you cannot mix wpa2 and wpa (also see https://hashcat.net/trac/ticket/222#comment:4 )
So the answer is you create 1 single file that includes all the networks (one after the other), if you need to deal w/ wpa2 and wpa, just look at the link above how to split them correctly.
in linux you can just run
cat *.hcmask > all.hcmask
if wpa (X)OR wpa2 only