在继续进行bash之前等待网络链接建立 [英] Waiting for network link to be up before continuing in bash

问题描述

是否可以在继续之前检查bash脚本中多个接口的网络接口链接是否成功?

Is there a way to check for successful network interface link for multiple interfaces in a bash script before continuing?

类似的东西:

eth0 eth1 eth2 eth3 network interfaces are brought up
Wait for link detection on all 4 interfaces
Proceed

推荐答案

您可以检查运行ifconfig -s后网络接口的名称是否出现.

You can check if the network interfaces' names appear after running ifconfig -s.

类似的东西:

if [ $( ifconfig -s | grep eth0 ) ]; then echo "eth0 is up!"

检查 此链接 了解更多信息.

Check this link for more details.

要继续进行此测试，您可以执行@ jm666所说的操作:

To make this test ongoing, you can do something like what @jm666 said:

while ! ping -c 1 -W 1 1.2.3.4; do
    echo "Waiting for 1.2.3.4 - network interface might be down..."
    sleep 1
done

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