中国DOS联盟

@echo off

for /f "skip=3 tokens=2*" %%a in ('ipconfig') do set AccessName=%%b&& goto AccName2



:AccName2

set AccessName=%AccessName:~0,-2%

echo Access: "%AccessName%"

Re chenhui530:

The methods of you and I should both have ignored the situations where there are spaces and colons in the connection name. I made a slight modification based on your code.

Interestingly, it was found that in the command output of ipconfig, the end of each line of text is two carriage returns (0x0D) and one newline (0x0A). So when I initially tested with delims=2*, a series of interesting setting confusions occurred, such as I could use it to hide the first character of the environment variable name. But later I remembered that Brother Wu Nai He first discovered this phenomenon in the forum, and the link is as follows:

(Solved) Please ask how to capture a specific line of text in a file
http://www.cn-dos.net/forum/viewthread.php?tid=17443#pid102925

I don't know if this is a bug in the program or a special requirement in some special applications. But it does bring some small troubles to our use in batch processing.

@echo off

for /f "skip=3 tokens=2*" %%a in ('ipconfig') do set AccessName=%%b&& goto AccName2



:AccName2

set AccessName=%AccessName:~0,-2%

echo Access: "%AccessName%"

Last edited by willsort on 2005-11-15 at 16:29 ]

I tried it, and it should run without problems. Have you considered the situation of multiple network cards?

### Translation

@echo off
for /f "skip=3 tokens=2*" %%a in ('ipconfig') do set AccessName=%%b&& goto AccName2

:AccName2
set AccessName=%AccessName:~0,-2%

I would like to ask. Why is this set AccessName=%%b here.
Also, what does the SET AccessName=%AccessName:~0,-2% command do?

### Note
The original text is a mix of Chinese and English code blocks. The translation is done while keeping the code blocks and Chinese questions as per requirements.

Tested in win2000, there is "Local Area Connection 2", an error occurs, and the parameters are found to be correct

@echo off
for /f "skip=3 tokens=2*" %%a in ('ipconfig') do set AccessName=%%b&& goto AccName2

:AccName2
set AccessName=%AccessName:~0,-2%
echo Access: "%AccessName%"
set x=%random:~-1%
set x1=%random:~-1%
netsh interface ip set address "%AccessName%" static 192.168.1.1%x%%x1% 255.255.255.0 192.168.1.1 1

The command running result is: An invalid port was specified Local Area Connection 2

netsh interface ip set dns "%AccessName%" static 192.168.1.1,192.168.1.2,192.168.1.3

Entering multiple DNS servers in this way may cause an error. How to handle it?

Batch script to set multiple DNS. The above are telecom, China Tietong, and Unicom DNS respectively.

Automatically setting IP and DNS has been tested under XP and WIN2003, but will cause errors under WIN2000

Re ronin:

Floor 17: Because my test machine does not have a multi-network card situation, so I can't test and improve it.

Floor 19: There is a selection strategy problem in the case of multiple connections, this is not a problem of the batch processing itself.

Floors 20/21: It may not pass under Win2000 for two possible reasons: 1. Does not support or incomplete support for the netsh command; 2. The output of ipconfig is different from XP. Wait and see after seeing the output results of netsh and ipconfig, redirect it to a text and upload it as an attachment.

Re zero:

Use set /? to check the command line help of set to get a clear answer.

Last edited by willsort on 2005-11-30 at 13:23 ]

1. Does not support or incompletely supports the netsh command
I estimate this reason is relatively common