Question

我正在尝试使用Windows批处理脚本将活动网关IP转换为变量。只能使用原生工具。

因此我使用命令'route'。打印输出的示例如下：

route print -4 0.*

===========================================================================
Interface List
  4...2e 33 7a f5 ff e9 ......Microsoft Wi-Fi Direct Virtual Adapter
  3...8c ae 4c ee 07 84 ......ASIX AX88179 USB 3.0 to Gigabit Ethernet Adapter #2
 14...00 50 56 c0 00 01 ......VMware Virtual Ethernet Adapter for VMnet1
  5...00 50 56 c0 00 08 ......VMware Virtual Ethernet Adapter for VMnet8
 11...00 ff a7 b1 54 e7 ......TAP-Windows Adapter V9
 12...2c 33 7a f5 ff e9 ......Dell Wireless 1560 802.11ac
  1...........................Software Loopback Interface 1
 13...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter
  2...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #2
 15...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #3
===========================================================================

IPv4 Route Table
===========================================================================
Active Routes:
Network Destination        Netmask          Gateway       Interface  Metric
          0.0.0.0          0.0.0.0   192.168.55.254    192.168.55.53     10
===========================================================================
Persistent Routes:
  Network Address          Netmask  Gateway Address  Metric
          0.0.0.0          0.0.0.0  192.168.111.111       1
===========================================================================

如您所见，我有一条活动路线和持续路线。两者都有一个网关地址。

我只想将Active Gateway IP作为变量。

到目前为止，我已经创建了这个命令：

for /f "tokens=3" %%a in ('route -4 print 0.* ^| find "0."') do set "_active_gateway_address=%%a"

不幸的是，这导致持久网关（192.168.111.111）被捕获为变量，因为它是找到的最后一个条目。

如何在找到第一个匹配项时仅捕获活动网关（192.168.55.254）或使'find'停止？

非常感谢

Answer 1

选项1 - 使用变量作为标志只读取第一个值

set "_active_gateway_address="
for /f "tokens=3" %%a in ('
    route -4 print 0.* ^| find "0."
') do if not defined _active_gateway_address set "_active_gateway_address=%%a"

或使用goto命令

for /f "tokens=3" %%a in ('
    route -4 print 0.* ^| find "0."
') do set "_active_gateway_address=%%a" & goto :done
:done

选项2 - 检查第五个令牌存在

for /f "tokens=3,5" %%a in ('
    route -4 print 0.* ^| find "0."
') do if not "%%b"=="" set "_active_gateway_address=%%a"

使用批处理脚本将活动网关提取到变量中

1 个答案: