tcpdump -i em2 -s 零 -X -vv -n port 8081 -w '82.cap'
tcpdump -i em2 -s 0 -X -vv -n port 8081 -w 82.captcpdump -i em2 -s 0 -X -vv -n port 8081 -w 82.c
tcpdump -i em2 -s 0 -X -vv -n port 8081 -w '82.cap'
tcpdump -i em2 -s 0 -X -vv -n port 8081 -w '82.cap'
getconf LONG_BIT
