显示丢失的 icmp_seq 计数 | ping 命令

显示丢失的 icmp_seq 计数 | ping 命令

我正在寻找一些东西,可以在运行 ping 命令时显示丢失的ICMP包,或者可以在输出中显示失败。下面的例子

当前输出中我们缺少 icmp_seq 计数。

64 bytes from 192.168.56.11: icmp_seq=38 ttl=64 time=1.23 ms
64 bytes from 192.168.56.11: icmp_seq=52 ttl=64 time=0.831 ms
64 bytes from 192.168.56.11: icmp_seq=53 ttl=64 time=0.679 ms
64 bytes from 192.168.56.11: icmp_seq=54 ttl=64 time=0.679 ms
64 bytes from 192.168.56.11: icmp_seq=55 ttl=64 time=0.679 ms
64 bytes from 192.168.56.11: icmp_seq=56 ttl=64 time=0.679 ms

所需的输出,如果丢失,将对 icmp_seq 进行计数,然后显示错误

64 bytes from 192.168.56.11: icmp_seq=51 ttl=64 time=1.23 ms
64 bytes from 192.168.56.11: icmp_seq=52 ttl=64 time=0.831 ms
64 bytes from 192.168.56.11: icmp_seq=53 ttl=64 time=0.679 ms
Failed
Failed
Failed 
Failed
64 bytes from 192.168.56.11: icmp_seq=58 ttl=64 time=0.679 ms
64 bytes from 192.168.56.11: icmp_seq=59 ttl=64 time=0.679 ms
Failed
Failed
Failed

答案1

使用 ping-O来提及未完成的数据包。包裹永远不会丢失,但如果您使用-O,未完成的包裹将导致类似的行

Thu 04 Mar 2021 05:32:04 PM CET no answer yet for icmp_seq=232

所以你可以这样做:

ping -O 192.168.56.11 | sed "s/.*no answer yet.*/failed/g"

以获得您想要的输出。

答案2

检查这个代码

这只是解析 ping 输出

bash-4.1$ cat ping.awk
#!/usr/bin/awk -f
#
# analyzes ping output on Linux and looks for missed returns
# based on icmp_seq
#
# ping output is expected on stdin
#

BEGIN { num = 0 }
$5 ~ /icmp_seq=/ {
    split($5, res, /=/);
    if (res[2] != num + 1) {
        print "missed between", num, "and", res[2] }
    num = res[2];
}


bash-4.1$ cat ping_result.txt
64 bytes from 192.168.56.11: icmp_seq=38 ttl=64 time=1.23 ms
64 bytes from 192.168.56.11: icmp_seq=52 ttl=64 time=0.831 ms
64 bytes from 192.168.56.11: icmp_seq=53 ttl=64 time=0.679 ms


bash-4.1$ awk -f ping.awk ping_result.txt
missed between 0 and 38
missed between 38 and 52

答案3

Linux, 可以用:

fping -l google.com

上面的命令会显示统计数据:

  • 每个请求的平均花费时间。
  • 包裹总体丢失的百分比。

样本输出

google.com : [160], 84 bytes, 32.0 ms (39.1 avg, 0% loss)
google.com : [161], 84 bytes, 32.3 ms (39.1 avg, 0% loss)
google.com : [162], 84 bytes, 33.8 ms (39.1 avg, 0% loss)
google.com : [163], 84 bytes, 31.3 ms (39.0 avg, 0% loss)
google.com : [164], 84 bytes, 32.8 ms (39.0 avg, 0% loss)
google.com : [165], 84 bytes, 37.3 ms (39.0 avg, 0% loss)
google.com : [166], 84 bytes, 32.4 ms (38.9 avg, 0% loss)
google.com : [167], 84 bytes, 36.1 ms (38.9 avg, 0% loss)
google.com : [168], 84 bytes, 32.8 ms (38.9 avg, 0% loss)
google.com : [169], 84 bytes, 33.8 ms (38.8 avg, 0% loss)
google.com : [170], 84 bytes, 32.6 ms (38.8 avg, 0% loss)
google.com : [171], 84 bytes, 33.0 ms (38.8 avg, 0% loss)
google.com : [172], 84 bytes, 33.2 ms (38.7 avg, 0% loss)
^C
google.com : xmt/rcv/%loss = 173/173/0%, min/avg/max = 31.3/38.7/261

尖端:

  • ctrl + c停止它,它会显示额外的一行统计信息,包括:
    发送的包裹/接收的包裹/丢失的百分比,经过时间的最小/平均/最大。

安装

默认情况下没有安装,可以通过以下方式安装:

  • 乌班图 / 薄荷
    sudo apt install fping

答案4

到目前为止,我已经成功编写了以下命令。我可以在后台运行它以及tailf正在创建的文件。

[root@connect ~]# touch result.txt; while true; do ping  -c 1 -w 2 192.168.56.11 || echo “`date` ping faild” >> result.txt; sleep 1; done

编者注:发帖者可能想写以下内容而不是“`date` ping faild”

"$(date) ping failed"

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