为什么我?在 ping 命令后看到了一颗心？如果有任何改变，我将通过 ConEmu 中的 ssh 连接运行以下命令。这是意料之中的还是我以某种方式被黑客入侵？在其他 shell、非 Ubuntu shell、(git-bash) 上 Ping 不会这样做。
$> ping mail.google.com
PING googlemail.l.google.com (74.125.196.18) 56(84) bytes of data.
64 bytes from yk-in-f18.1e100.net (74.125.196.18): icmp_req=1 ttl=46 time=0.991 ms
64 bytes from yk-in-f18.1e100.net (74.125.196.18): icmp_req=2 ttl=46 time=1.00 ms
64 bytes from yk-in-f18.1e100.net (74.125.196.18): icmp_req=3 ttl=46 time=0.993 ms
64 bytes from yk-in-f18.1e100.net (74.125.196.18): icmp_req=4 ttl=46 time=1.06 ms
64 bytes from yk-in-f18.1e100.net (74.125.196.18): icmp_req=5 ttl=46 time=0.957 ms
64 bytes from yk-in-f18.1e100.net (74.125.196.18): icmp_req=6 ttl=46 time=1.04 ms
64 …