generate key in linux

#192.168.10.220:generatekey:publickey(likeadoor),privatekey(likeakey)

ssh-keygen-trsa

mvid_rsa/root/.ssh/sj221.key

scpid_rsa.pub192.168.10.221:/root/.ssh/#movepublickeyto221

#192.168.10.221:setupthedoor(publickey)into221

cat/root/.ssh/id_rsa.pub>>/root/.ssh/authorized_keys#addpublickey(door)intoauthorized_keys

rm/root/.ssh/id_rsa.pub

#192.168.10.220:openthedoor

ssh-i/root/.ssh/sj221.key192.168.10.221