是否可以在Mac OS上以编程方式更改DNS？

问题描述

| 使用SystemConfiguration框架或其他框架的任何示例吗？ （类似的问题在Mac OS X上以编程方式查找DNS服务器设置有相当令人困惑的答案）     

解决方法

我最近有同样的问题。我在这里发布了我的解决方案： http://blog.notampering.com/ 这是代码段...希望对您有所帮助。

#include <stdio.h>
#include <SystemConfiguration/SCPreferences.h>
#include <SystemConfiguration/SCDynamicStore.h>


int main (int argc,const char * argv[])
{
    //get current values
    SCDynamicStoreRef dynRef=SCDynamicStoreCreate(kCFAllocatorSystemDefault,CFSTR(\"iked\"),NULL,NULL);
CFDictionaryRef ipv4key = SCDynamicStoreCopyValue(dynRef,CFSTR(\"State:/Network/Global/IPv4\"));
CFStringRef primaryserviceid = CFDictionaryGetValue(ipv4key,CFSTR(\"PrimaryService\"));
CFStringRef primaryservicepath = CFStringCreateWithFormat(NULL,CFSTR(\"State:/Network/Service/%@/DNS\"),primaryserviceid);
CFDictionaryRef dnskey = SCDynamicStoreCopyValue(dynRef,primaryservicepath);

//create new values
CFMutableDictionaryRef newdnskey = CFDictionaryCreateMutableCopy(NULL,dnskey);
CFDictionarySetValue(newdnskey,CFSTR(\"DomainName\"),CFSTR(\"example.com\"));

CFMutableArrayRef dnsserveraddresses = CFArrayCreateMutable(NULL,NULL);
CFArrayAppendValue(dnsserveraddresses,CFSTR(\"8.8.8.8\"));
CFArrayAppendValue(dnsserveraddresses,CFSTR(\"4.2.2.2\"));
CFDictionarySetValue(newdnskey,CFSTR(\"ServerAddresses\"),dnsserveraddresses);

//set values
bool success = SCDynamicStoreSetValue(dynRef,primaryservicepath,newdnskey);

//clean up
CFRelease(dynRef);
CFRelease(primaryservicepath);
CFRelease(dnskey);
CFRelease(dnsserveraddresses);
CFRelease(newdnskey);
}

    ,此处记录了shell脚本版本：http://osxdaily.com/2015/06/02/change-dns-command-line-mac-os-x/ 简短的版本是：

# Template:
networksetup -setdnsservers (Network Service) (DNS IP) (DNS IP) ...

# Example: set DNS for Wi-Fi to 8.8.8.8  8.8.4.4  1.1.1.1
sudo networksetup -setdnsservers Wi-Fi  8.8.8.8  8.8.4.4  1.1.1.1

# Example: Clear the manually assigned DNS so that the default values can take over
sudo networksetup -setdnsservers Wi-Fi  Empty