哪里做外贸网站,做社交电商第一步怎么做,企业邮箱与个人邮箱有什么区别,网站建设的教学视频0 前言
网络信息是电脑网络信息安全检查中的一块重要内容#xff0c;Linux和基于Linux的操作系统#xff0c;提供了很多的网络命令#xff0c;今天我们研究最常用的ping命令。
1 ping命令 的功能、格式和选项说明
1.1 ping命令 的功能
简单来说#xff0c; ping 命令 会…
0 前言
网络信息是电脑网络信息安全检查中的一块重要内容Linux和基于Linux的操作系统提供了很多的网络命令今天我们研究最常用的ping命令。
1 ping命令 的功能、格式和选项说明
1.1 ping命令 的功能
简单来说 ping 命令 会使用 ICMPInternet Control Message Protocol 传输协议向网络主机发出要求回应的信息若网络主机的网络功能没有问题就会回应该信息从而得知该主机运作正常。
具体来说ping 命令使用 ICMP 协议的强制ECHO_REQUEST数据报从主机或网关引出 ICMP ECHO_RESPONSE。ECHO_REQUEST数据报 pings 都有一个 IP 和 ICMP 标头后跟一个结构体 timeval然后是用于填充数据包的任意数量的 pad 字节。 ping 命令常用于检测 网络中的另一台主机或路由器是否可访问。
1.2 Linux中的ping命令支持ipV6吗
在基于 Debian 的 Linux 发行版包括 Ubuntu上您可以使用 ping6 命令强制 ping 使用 IPv6 而不是 IPv4。在基于 Red Hat 的发行版如 CentOS和基于 Arch Linux 的发行版如 Manjaro上使用带 -6 选项的 ping 命令来强制 IPv6。
1.3 Linux中的ping命令与Windows中的ping命令相同吗
Linux中的ping命令与Windows中的ping命令在功能上可以说是相同的但是两者在某些方面存在不同。例如在默认情况下Linux 下的ping会连续发送包而Windows的ping命令 仅发送 4 个包。
Windows 中的ping命令格式如下
C:\Users\purpleendurerping用法: ping [-t] [-a] [-n count] [-l size] [-f] [-i TTL] [-v TOS][-r count] [-s count] [[-j host-list] | [-k host-list]][-w timeout] [-R] [-S srcaddr] [-c compartment] [-p][-4] [-6] target_name选项:-t Ping 指定的主机直到停止。若要查看统计信息并继续操作请键入 CtrlBreak若要停止请键入 CtrlC。-a 将地址解析为主机名。-n count 要发送的回显请求数。-l size 发送缓冲区大小。-f 在数据包中设置“不分段”标记(仅适用于 IPv4)。-i TTL 生存时间。-v TOS 服务类型(仅适用于 IPv4。该设置已被弃用对 IP 标头中的服务类型字段没有任何影响)。-r count 记录计数跃点的路由(仅适用于 IPv4)。-s count 计数跃点的时间戳(仅适用于 IPv4)。-j host-list 与主机列表一起使用的松散源路由(仅适用于 IPv4)。-k host-list 与主机列表一起使用的严格源路由(仅适用于 IPv4)。-w timeout 等待每次回复的超时时间(毫秒)。-R 同样使用路由标头测试反向路由(仅适用于 IPv6)。根据 RFC 5095已弃用此路由标头。如果使用此标头某些系统可能丢弃回显请求。-S srcaddr 要使用的源地址。-c compartment 路由隔离舱标识符。-p Ping Hyper-V 网络虚拟化提供程序地址。-4 强制使用 IPv4。-6 强制使用 IPv6。
1.4 ping命令的格式
与我们之前学的大多数linux命令不同ping命令不支持--help选项。
我们可以使用ping 或 ping -?命令获取ping命令的格式信息。
[purpleendurer bash ~] ping
Usage: ping [-aAbBdDfhLnOqrRUvV64] [-c count] [-i interval] [-I interface][-m mark] [-M pmtudisc_option] [-l preload] [-p pattern] [-Q tos][-s packetsize] [-S sndbuf] [-t ttl] [-T timestamp_option][-w deadline] [-W timeout] [hop1 ...] destination
Usage: ping -6 [-aAbBdDfhLnOqrRUvV] [-c count] [-i interval] [-I interface][-l preload] [-m mark] [-M pmtudisc_option][-N nodeinfo_option] [-p pattern] [-Q tclass] [-s packetsize][-S sndbuf] [-t ttl] [-T timestamp_option] [-w deadline][-W timeout] destination
[purpleendurer bash ~] ping -?
Usage: ping [-aAbBdDfhLnOqrRUvV64] [-c count] [-i interval] [-I interface][-m mark] [-M pmtudisc_option] [-l preload] [-p pattern] [-Q tos][-s packetsize] [-S sndbuf] [-t ttl] [-T timestamp_option][-w deadline] [-W timeout] [hop1 ...] destination
Usage: ping -6 [-aAbBdDfhLnOqrRUvV] [-c count] [-i interval] [-I interface][-l preload] [-m mark] [-M pmtudisc_option][-N nodeinfo_option] [-p pattern] [-Q tclass] [-s packetsize][-S sndbuf] [-t ttl] [-T timestamp_option] [-w deadline][-W timeout] destination
[purpleendurer bash ~] 1.4.1支持ipV4的ping命令格式 ping [-aAbBdDfhLnOqrRUvV64] [-c 完成次数] [-i 间隔秒数] [-I 网络界面] [-m mark] [-M pmtudisc_option] [-l 前置载入] [-p 范本样式] [-Q tos] [-s 数据包大小] [-S sndbuf] [-t 存活数值] [-T 间间戳选项] [-w 退出前等待秒数] [-W 执行前等待秒数] [hop1 ...] 目标主机名称或IP地址 1.4.2 支持ipV6的ping命令格式 ping -6 [-aAbBdDfhLnOqrRUvV] [-c 完成次数] [-i 间隔秒数] [-I 网络界面] [-l 前置载入] [-m mark] [-M pmtudisc_option] [-N nodeinfo_option] [-p 范本样式] [-Q tclass] [-s 数据包大小] [-S sndbuf] [-t 存活数值] [-T 间间戳选项] [-w 退出前等待秒数] [[-W 执行前等待秒数] 目标主机名称或IP地址 1.5 ping命令选项说明
ping命令的选项非常多而且不同版本linux 提供的ping命令选项也不尽相同。
参数描述-a Audible ping. 可听到的ping -A Adaptive ping.Interpacket interval adapts to round-trip time, so that effectively not more than one (or more, if preload is set) unanswered probes present in the network.Minimal interval is 200msec for not super-user.On networks with low rtt this mode is essentially equivalent to flood mode. 自适应 ping。数据包间间隔适应往返时间因此网络中实际上不存在超过一个或多个如果设置了预加载未应答的探测器。对于非超级用户最小间隔为 200 毫秒。在低 rtt 的网络上此模式基本上等同于泛洪模式。-b Allow pinging a broadcast address. 允许对广播地址进行ping -B Do not allow ping to change source address of probes.The address is bound to one selected when ping starts. 不允许ping更改探测的来源地址。地址绑定到ping启动时选定的一个地址上。-c count Stop after sending count ECHO_REQUEST packets.With deadline option, ping waits for count ECHO_REPLY packets, until the timeout expires. 发送指定数量的ECHO_REQUEST数据包后停止。使用deadline选项ping等待count个ECHO_REPLY数据包直到超时。-d Set the SO_DEBUG option on the socket being used.Essentially, this socket option is not used by Linux kernel. 在使用的套接字上设置SO_DEBUG选项。实际上Linux内核不使用此套接字选项。-F flow label Allocate and set 20 bit flow label on echo request packets. (Only ping6).If value is zero, kernel allocates random flow label. 在回显请求数据包上分配并设置20位流标签。仅限ping6。如果值为零则内核分配随机的流标签。-f Flood ping. For every ECHO_REQUEST sent a period . is printed, while for ever ECHO_REPLY received a backspace is printed.This provides a rapid display of how many packets are being dropped.If interval is not given, it sets interval to zero and outputs packets as fast as they come back or one hundred times per second, whichever is more.Only the super-user may use this option with zero interval. 洪泛ping。对于每个发送的ECHO_REQUEST打印一个句点“.”对于每个接收的ECHO_REPLY打印一个退格符。这提供了快速显示丢包数量的方式。如果没有给出间隔它将间隔设置为零并且以数据包回来的速度输出或者每秒一百次以两者中较大的为准。只有超级用户可以使用此选项和零间隔。-i interval Wait interval seconds between sending each packet.The default is to wait for one second between each packet normally, or not to wait in flood mode.Only super-user may set interval to values less 0.2 seconds. 在发送每个数据包之间等待指定的时间间隔。默认情况下每个数据包之间等待一秒钟或者在洪泛模式下不等待。只有超级用户可以将间隔设置为小于0.2秒的值。-I interface address Set source address to specified interface address.Argument may be numeric IP address or name of device.When pinging IPv6 link-local address this option is required. 将源地址设置为指定的接口地址。参数可以是数值IP地址或设备名称。在ping IPv6链路本地地址时需要此选项。 -l preload If preload is specified, ping sends that many packets not waiting for reply.Only the super-user may select preload more than 3. 如果指定了preload则ping发送指定数量的数据包而不等待响应。只有超级用户可以选择预加载超过3个的数据包。-L Suppress loopback of multicast packets.This flag only applies if the ping destination is a multicast address. 屏蔽组播数据包的回路。这个标志仅适用于ping目的地是一个组播地址的情况。-n Numeric output only.No attempt will be made to lookup symbolic names for host addresses. 仅输出数值形式。不尝试查找主机地址的符号名称。-p pattern You may specify up to 16 pad bytes to fill out the packet you send.This is useful for diagnosing data-dependent problems in a network.For example, -p ff will cause the sent packet to be filled with all ones. 您可以指定最多16个填充字节来填充发送的数据包。这对于诊断网络中依赖于数据的问题很有用。例如-p ff将导致发送的数据包全部填充为1。-Q tos Set Quality of Service -related bits in ICMP datagrams.tos can be either decimal or hex number.Traditionally (RFC1349), these have been interpreted as: 0 for reserved (currently being redefined as congestion control), 1-4 for Type of Service and 5-7 for Precedence. Possible settings for Type of Service are: minimal cost: 0x02, reliability: 0x04, throughput: 0x08, low delay: 0x10.Multiple TOS bits should not be set simultaneously.Possible settings for special Precedence range from priority (0x20) to net control (0xe0).You must be root (CAP_NET_ADMIN capability) to use Critical or higher precedence value.You cannot set bit 0x01 (reserved) unless ECN has been enabled in the kernel.In RFC2474, these fields has been redefined as 8-bit Differentiated Services (DS), consisting of: bits 0-1 of separate data (ECN will be used, here), and bits 2-7 of Differentiated Services Codepoint (DSCP). 设置ICMP数据报中的服务质量相关位。tos可以是十进制或十六进制数。传统上RFC1349这些被解释为0表示保留目前正在重新定义为拥塞控制1-4表示服务类型5-7表示优先级。服务类型的可能设置为最低成本0x02可靠性0x04吞吐量0x08低延迟0x10。请勿同时设置多个TOS位。特殊优先级的可能设置范围从优先级0x20到网络控制0xe0。您必须具有rootCAP_NET_ADMIN权限才能使用重要或更高优先级的值。除非已在内核中启用了ECN否则不能设置位0x01保留。在RFC2474中这些字段已被重新定义为8位区分服务DS包括单独数据的位0-1这里将使用ECN以及不同服务代码点DSCP的位2-7。-q Quiet output.Nothing is displayed except the summary lines at startup time and when finished. 静默输出。除了启动时和完成时的总结行外不显示任何内容。-R Record route.Includes the RECORD_ROUTE option in the ECHO_REQUEST packet and displays the route buffer on returned packets.Note that the IP header is only large enough for nine such routes.Many hosts ignore or discard this option. 记录路由。在ECHO_REQUEST数据包中包含RECORD_ROUTE选项并在返回的数据包上显示路由缓冲区。请注意IP头部仅足够存储9个此类路由。许多主机忽略或丢弃此选项。-r Bypass the normal routing tables and send directly to a host on an attached interface.If the host is not on a directly-attached network, an error is returned.This option can be used to ping a local host through an interface that has no route through it provided the option -I is also used. 绕过正常路由表直接发送到连接的主机。如果主机不在直接连接的网络上则返回错误。使用选项-I可以通过没有路由的接口ping本地主机。-s packetsize Specifies the number of data bytes to be sent.The default is 56, which translates into 64 ICMP data bytes when combined with the 8 bytes of ICMP header data. 指定要发送的数据字节数。默认为56个字节与8个字节的ICMP头数据组合在一起总共是64个ICMP数据字节。-S sndbuf Set socket sndbuf.If not specified, it is selected to buffer not more than one packet. 设置套接字的sndbuf。如果未指定则选择的缓冲区不超过一个数据包。-t ttl Set the IP Time to Live. 设置IP的生存时间TTL -T timestamp option Set special IP timestamp options.timestamp option may be either tsonly (only timestamps), tsandaddr (timestamps and addresses) or tsprespec host1 [host2 [host3 [host4]]] (timestamp prespecified hops). 设置特殊的IP时间戳选项。时间戳选项可以是tsonly仅时间戳tsandaddr时间戳和地址或tsprespec host1 [host2 [host3 [host4]]]预指定时间戳跳数。-M hint Select Path MTU Discovery strategy.hint may be either do (prohibit fragmentation, even local one), want (do PMTU discovery, fragment locally when packet size is large), or dont (do not set DF flag). 选择路径MTU发现策略。提示可以是do禁止分段即使是本地分段want进行PMTU发现当数据包大小较大时在本地分段或dont不设置DF标志。-U Print full user-to-user latency (the old behaviour).Normally ping prints network round trip time, which can be different f.e. due to DNS failures. 打印完整的用户到用户延迟旧行为。通常ping打印网络往返时间这可以与由于DNS故障等原因不同。-v Verbose output. 详细输出 -V Show version and exit. 显示版本并退出 -w deadline Specify a timeout, in seconds, before ping exits regardless of how many packets have been sent or received.In this case ping does not stop after count packet are sent, it waits either for deadline expire or until count probes are answered or for some error notification from network. 指定超时时间秒在此时间内ping无论发送或接收到多少个数据包都会退出。在这种情况下ping不会在发送count个数据包后停止它会等待deadline到期或直到接收到count个探测的响应或接收到某些来自网络的错误通知。-W timeout Time to wait for a response, in seconds.The option affects only timeout in absense of any responses, otherwise ping waits for two RTTs. 等待响应的时间秒。该选项仅在没有收到任何响应的情况下影响超时否则ping等待两个往返时间。
2 ping命令实例
2.1 ping -a g.cn
[purpleendurer bash ~] ping -a g.cn
PING g.cn (114.250.67.34) 56(84) bytes of data.
64 bytes from 114.250.67.34 (114.250.67.34): icmp_seq1 ttl116 time4.41 ms
64 bytes from 114.250.67.34 (114.250.67.34): icmp_seq2 ttl116 time4.36 ms
64 bytes from 114.250.67.34 (114.250.67.34): icmp_seq3 ttl116 time4.34 ms
64 bytes from 114.250.67.34 (114.250.67.34): icmp_seq4 ttl116 time4.38 ms
64 bytes from 114.250.67.34 (114.250.67.34): icmp_seq5 ttl116 time4.34 ms
64 bytes from 114.250.67.34 (114.250.67.34): icmp_seq6 ttl116 time4.36 ms
64 bytes from 114.250.67.34 (114.250.67.34): icmp_seq7 ttl116 time4.36 ms
^C
--- g.cn ping statistics ---
7 packets transmitted, 7 received, 0% packet loss, time 6007ms
rtt min/avg/max/mdev 4.342/4.368/4.414/0.041 ms
[purpleendurer bash ~] 1.2 ping -A g.cn 自适应 ping g.cn
[purpleendurer bash ~] ping -A g.cn
PING g.cn (114.250.70.34) 56(84) bytes of data.
64 bytes from 114.250.70.34 (114.250.70.34): icmp_seq1 ttl117 time5.04 ms
64 bytes from 114.250.70.34 (114.250.70.34): icmp_seq2 ttl117 time4.76 ms
64 bytes from 114.250.70.34 (114.250.70.34): icmp_seq3 ttl117 time4.76 ms
64 bytes from 114.250.70.34 (114.250.70.34): icmp_seq4 ttl117 time4.77 ms
64 bytes from 114.250.70.34 (114.250.70.34): icmp_seq5 ttl117 time4.76 ms
64 bytes from 114.250.70.34 (114.250.70.34): icmp_seq6 ttl117 time4.81 ms
64 bytes from 114.250.70.34 (114.250.70.34): icmp_seq7 ttl117 time4.77 ms
64 bytes from 114.250.70.34 (114.250.70.34): icmp_seq8 ttl117 time4.79 ms
64 bytes from 114.250.70.34 (114.250.70.34): icmp_seq9 ttl117 time4.98 ms
64 bytes from 114.250.70.34 (114.250.70.34): icmp_seq10 ttl117 time4.81 ms
64 bytes from 114.250.70.34 (114.250.70.34): icmp_seq11 ttl117 time4.77 ms
64 bytes from 114.250.70.34 (114.250.70.34): icmp_seq12 ttl117 time4.78 ms
^C
--- g.cn ping statistics ---
12 packets transmitted, 12 received, 0% packet loss, time 2210ms
rtt min/avg/max/mdev 4.760/4.820/5.045/0.123 ms, ipg/ewma 200.918/4.862 ms
[purpleendurer bash ~] 可以看到ping -A 返回个信息的速度明显快于 ping -a。
1.3 ping -b g.cn使用广播方式ping g.cn
[purpleendurer bash ~] ping -b g.cn
PING g.cn (114.250.70.34) 56(84) bytes of data.
64 bytes from 114.250.70.34 (114.250.70.34): icmp_seq1 ttl117 time4.83 ms
64 bytes from 114.250.70.34 (114.250.70.34): icmp_seq2 ttl117 time4.81 ms
64 bytes from 114.250.70.34 (114.250.70.34): icmp_seq3 ttl117 time4.80 ms
64 bytes from 114.250.70.34 (114.250.70.34): icmp_seq4 ttl117 time4.76 ms
64 bytes from 114.250.70.34 (114.250.70.34): icmp_seq5 ttl117 time4.80 ms
64 bytes from 114.250.70.34 (114.250.70.34): icmp_seq6 ttl117 time4.86 ms
64 bytes from 114.250.70.34 (114.250.70.34): icmp_seq7 ttl117 time4.80 ms
^C
--- g.cn ping statistics ---
7 packets transmitted, 7 received, 0% packet loss, time 6011ms
rtt min/avg/max/mdev 4.766/4.813/4.862/0.095 ms
[purpleendurer bash ~] 1.4 ping -B g.cn
[purpleendurer bash ~] ping -B g.cn
PING g.cn (114.250.67.34) from 172.25.109.185 : 56(84) bytes of data.
64 bytes from 114.250.67.34 (114.250.67.34): icmp_seq1 ttl116 time4.01 ms
64 bytes from 114.250.67.34 (114.250.67.34): icmp_seq2 ttl116 time4.36 ms
64 bytes from 114.250.67.34 (114.250.67.34): icmp_seq3 ttl116 time3.94 ms
^C
--- g.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev 3.943/4.108/4.364/0.197 ms
[purpleendurer bash ~] 1.5 ping -c 2 g.cn向g.cn发送2个ICMP包
[purpleendurer bash ~] ping -c 2 g.cn
PING g.cn (114.250.70.34) 56(84) bytes of data.
64 bytes from 114.250.70.34 (114.250.70.34): icmp_seq1 ttl117 time4.82 ms
64 bytes from 114.250.70.34 (114.250.70.34): icmp_seq2 ttl117 time4.82 ms--- g.cn ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev 4.822/4.822/4.822/0.000 ms
[purpleendurer bash ~] 1.6 ping -d g.cn
[purpleendurer bash ~] ping -d g.cn
PING g.cn (114.250.67.34) 56(84) bytes of data.
64 bytes from 114.250.67.34 (114.250.67.34): icmp_seq1 ttl116 time3.95 ms
64 bytes from 114.250.67.34 (114.250.67.34): icmp_seq2 ttl116 time3.97 ms
64 bytes from 114.250.67.34 (114.250.67.34): icmp_seq3 ttl116 time3.92 ms
64 bytes from 114.250.67.34 (114.250.67.34): icmp_seq4 ttl116 time3.89 ms
64 bytes from 114.250.67.34 (114.250.67.34): icmp_seq5 ttl116 time3.92 ms
^C
--- g.cn ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4005ms
rtt min/avg/max/mdev 3.896/3.933/3.976/0.062 ms
[purpleendurer bash ~] 1.7 ping -f g.cn洪水 ping g.cn 只有超级用户才能使用此选项
[purpleendurer bash ~] ping -f g.cn
PING g.cn (114.250.67.34) 56(84) bytes of data.
ping: cannot flood; minimal interval allowed for user is 200ms
[purpleendurer bash ~] sudo ping -f g.cn
PING g.cn (114.250.65.34) 56(84) bytes of data.
.^C
--- g.cn ping statistics ---
5304 packets transmitted, 5303 received, 0% packet loss, time 28698ms
rtt min/avg/max/mdev 5.285/5.390/12.965/0.268 ms, pipe 2, ipg/ewma 5.411/5.371 ms
[purpleendurer bash ~] 1.8 ping -i 2 -c 3 g.cn间隔2秒钟向g.cn发送3个ICMP包
[purpleendurer bash ~] ping -i 2 -c 3 g.cn
PING g.cn (114.250.65.34) 56(84) bytes of data.
64 bytes from 114.250.65.34 (114.250.65.34): icmp_seq1 ttl117 time5.49 ms
64 bytes from 114.250.65.34 (114.250.65.34): icmp_seq2 ttl117 time5.38 ms
64 bytes from 114.250.65.34 (114.250.65.34): icmp_seq3 ttl117 time5.40 ms--- g.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 4005ms
rtt min/avg/max/mdev 5.389/5.428/5.491/0.096 ms
[purpleendurer bash ~] 1.9 ping -q g.cn 以静默方式ping g.cn
[purpleendurer bash ~] ping -q g.cn
PING g.cn (114.250.65.34) 56(84) bytes of data.
^C
--- g.cn ping statistics ---
8 packets transmitted, 8 received, 0% packet loss, time 7010ms
rtt min/avg/max/mdev 5.386/5.410/5.453/0.023 ms
[purpleendurer bash ~] 命令返回的信息除了启动时和完成时的总结行外不显示任何内容。
1.10 ping -s 99 g.cn以99个字节ping g.cn
[purpleendurer bash ~] ping -s 99 g.cn
PING g.cn (114.250.65.34) 99(127) bytes of data.
107 bytes from 114.250.65.34 (114.250.65.34): icmp_seq1 ttl117 time5.43 ms
107 bytes from 114.250.65.34 (114.250.65.34): icmp_seq2 ttl117 time5.44 ms
107 bytes from 114.250.65.34 (114.250.65.34): icmp_seq3 ttl117 time5.39 ms
^C
--- g.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev 5.396/5.427/5.449/0.088 ms
[purpleendurer bash ~] 1.11 ping -t 16 g.cn 以TTL 值为16向g.cn发送ICMP包
[purpleendurer bash ~] ping -t 16 g.cn
PING g.cn (114.250.65.34) 56(84) bytes of data.
64 bytes from 114.250.65.34 (114.250.65.34): icmp_seq1 ttl117 time5.39 ms
64 bytes from 114.250.65.34 (114.250.65.34): icmp_seq2 ttl117 time5.40 ms
64 bytes from 114.250.65.34 (114.250.65.34): icmp_seq3 ttl117 time5.38 ms
64 bytes from 114.250.65.34 (114.250.65.34): icmp_seq4 ttl117 time5.39 ms
^C
--- g.cn ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3004ms
rtt min/avg/max/mdev 5.382/5.393/5.407/0.090 ms
[purpleendurer bash ~] 1.12 ping -T 时间戳 g.cn设置特殊的 IP 时间戳选项来ping g.cn
[purpleendurer bash ~] ping -T tsandaddr g.cn
PING g.cn (114.250.66.34) 56(124) bytes of data.
^C
--- g.cn ping statistics ---
8 packets transmitted, 0 received, 100% packet loss, time 7166ms[purpleendurer bash ~] ping -T tsonly g.cn
PING g.cn (114.250.66.34) 56(124) bytes of data.
^C
--- g.cn ping statistics ---
5 packets transmitted, 0 received, 100% packet loss, time 4091ms[purpleendurer bash ~] 1.13 ping -v g.cn启用详细模式ping g.cn
[purpleendurer bash ~] ping -v g.cn
PING g.cn (114.250.65.34) 56(84) bytes of data.
64 bytes from 114.250.65.34 (114.250.65.34): icmp_seq1 ttl117 time5.51 ms
64 bytes from 114.250.65.34 (114.250.65.34): icmp_seq2 ttl117 time5.40 ms
64 bytes from 114.250.65.34 (114.250.65.34): icmp_seq3 ttl117 time5.37 ms
64 bytes from 114.250.65.34 (114.250.65.34): icmp_seq4 ttl117 time5.45 ms
64 bytes from 114.250.65.34 (114.250.65.34): icmp_seq5 ttl117 time5.35 ms
64 bytes from 114.250.65.34 (114.250.65.34): icmp_seq6 ttl117 time5.41 ms
^C
--- g.cn ping statistics ---
6 packets transmitted, 6 received, 0% packet loss, time 5006ms
rtt min/avg/max/mdev 5.358/5.420/5.516/0.100 ms
[purpleendurer bash ~] 好像没有显示什么更详细的信息
3 参考资料 ping(8) - Linux man page (die.net)
