> For the complete documentation index, see [llms.txt](https://huataihuang.gitbook.io/cloud-atlas-draft/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://huataihuang.gitbook.io/cloud-atlas-draft/develop/shell/bash/get_eth0_ip.md).

# 获取网卡IP地址

在脚本中经常会需要获得 `eth0` 的IP地址，以下是获取案例：

```bash
#!/bin/bash
ifconfig eth0 | grep "inet addr" | cut -d ':' -f 2 | cut -d ' ' -f 1
```

命令行：

```bash
ip addr show eth0 | grep "inet\b" | awk '{print $2}' | cut -d/ -f1
```

脚本：

```bash
#!/bin/bash
theIPaddress=$(ip addr show eth0 | grep "inet\b" | awk '{print $2}' | cut -d/ -f1)
```

## 参考

* [Displaying IP address on eth0 interface](https://askubuntu.com/questions/560412/displaying-ip-address-on-eth0-interface)