Windows不重启就使环境变量修改生效

DOS命令窗口下

set PATH=C:

再次打开DOS窗口

echo %PATH%

就会输出

C:\Users\Administrator>echo %PATH%
C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\WINDOWS\System32\OpenSSH\;C:\Program Files\Git\cmd;C:\Program Files\TortoiseGit\bin;C:\phpEnv\php\php-70;C:\ProgramData\ComposerSetup\bin;D:\MinGW\bin;C:\Program Files\TortoiseSVN\bin;C:\Program Files\PuTTY\;C:\Program Files\nodejs\;C:\Users\Administrator\AppData\Local\Microsoft\WindowsApps;C:\Users\Administrator\AppData\Roaming\Composer\vendor\bin;C:\Users\Administrator\AppData\Local\Programs\Fiddler;C:\Users\Administrator\AppData\Local\BypassRuntm;C:\Users\Administrator\AppData\Local\Microsoft\WindowsApps;C:\Users\Administrator\AppData\Roaming\npm;C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Node.js;

说明刚才添加的node path 已经生效