ホスト名を書いたとき # strace ping -c 1 www.example.com 2>&1 | grep open open("/etc/ld.so.preload", O_RDONLY) = -1 ENOENT (No such file or directory) open("/etc/ld.so.cache", O_RDONLY) = 3 open("/lib/tls/libresolv.so.2", O_RDONLY) = 3 open…