问题描述
当执行ping主机我希望我的输出只是为了显示（送5）包的百分比好评。我想我需要使用的grep 不知何故，但我无法弄清楚如何（我是新来bash编程）。下面是我在哪里：平-c 5 -q $主机| grep的？。应该grep的去么？我想我将不得不做一些算术得到收到％，但我可以面对这一切。我怎样才能拉出信息，我从汇总需要，平安将输出？
When pinging a host I want my output just to show the percentage of packets (5 sent) received. I assume I need to use grep somehow but I can't figure out how (I'm new to bash programming). Here is where I am: ping -c 5 -q $host | grep ?. What should go in grep? I think I will have to do some arithmetic to get the percent received but I can deal with that. How can I pull out the info I need from the summary that ping will output?
推荐答案
像往常一样，有很多不同的方法可以做到这一点，但这里有一个选项：
As always, there are many different ways to do this., but here's one option:
这前pression将捕获的百分比数字，从X％的丢包
This expression will capture the percent digits from "X% packet loss"
ping -c 5 -q $host | grep -oP '\d+(?=% packet loss)'
您可以再从100减去损失比例获得成功的百分比：
You can then subtract the "loss" percentage from 100 to get the "success" percentage:
packet_loss=$(ping -c 5 -q $host | grep -oP '\d+(?=% packet loss)')
echo $[100 - $packet_loss]
这篇关于如何获得在bash平安收到数据包的百分比？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！