The answer is in post #9
[ Last edited by tireless on 2008-5-26 at 06:40 PM ]
[ Last edited by tireless on 2008-5-26 at 06:40 PM ]
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中国DOS联盟论坛 » DOS批处理 & 脚本技术（批处理室） » How to modify the PATH variable and make it take effect immediately? (Solved)
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Original Poster
Posted 2008-01-02 20:25 · 中国 江西 赣州 电信
Floor 2
Posted 2008-01-02 20:46 · 中国 湖北 武汉 电信
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It should work inside the script, but after the script closes it won't work the next time. You could try writing to the registry...
Floor 3
Posted 2008-01-02 20:54 · 中国 重庆 九龙坡区 电信
Floor 4
Posted 2008-01-02 21:12 · 中国 江西 赣州 电信
Originally posted by HAT at 2008-1-2 12:54 AM:
reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v Path /t REG_EXPAND_SZ /d "%path%;c:\test" /f
I had tried this before, but it doesn't take effect immediately.
[ Last edited by tireless on 2009-7-11 at 06:18 ]
Floor 5
Posted 2008-01-02 21:49 · 中国 广东 广州 天河区 电信
Use call or start to create a new process
Floor 6
Posted 2008-01-02 21:50 · 中国 湖北 武汉 电信
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Originally posted by tireless at 2008-1-2 21:12:
I had tried this before, but it doesn't take effect immediately. If I enter set at the command line, I still can't see any change...
You probably need to restart cmd. If that doesn't work, restart explorer.exe. If that still doesn't work, restart computer.^_^
Floor 7
Posted 2008-01-02 21:56 · 中国 广东 广州 天河区 电信
I haven't tried the registry method. This is how I use it.
http://www.cn-dos.net/forum/viewthread.php?tid=28204&fpage=1&highlight=%2Beverest79
http://www.cn-dos.net/forum/viewthread.php?tid=28204&fpage=1&highlight=%2Beverest79
Floor 8
Posted 2008-01-03 00:14 · 中国 江西 赣州 电信
Floor 9
Posted 2008-01-03 17:19 · 中国 甘肃 平凉 电信
wmic takes effect directly after modification
ENVIRONMENT - system environment settings management
::get the temp environment variable
wmic ENVIRONMENT where "name='temp'" get UserName,VariableValue
::change the value of the path environment variable, add e:\tools
wmic ENVIRONMENT where "name='path' and username='<system>'" set VariableValue="%path%;e:\tools"
::add the system environment variable home, value %HOMEDRIVE%%HOMEPATH%
wmic ENVIRONMENT create name="home",username="<system>",VariableValue="%HOMEDRIVE%%HOMEPATH%"
::delete the home environment variable
wmic ENVIRONMENT where "name='home'" delete
ENVIRONMENT - system environment settings management
::get the temp environment variable
wmic ENVIRONMENT where "name='temp'" get UserName,VariableValue
::change the value of the path environment variable, add e:\tools
wmic ENVIRONMENT where "name='path' and username='<system>'" set VariableValue="%path%;e:\tools"
::add the system environment variable home, value %HOMEDRIVE%%HOMEPATH%
wmic ENVIRONMENT create name="home",username="<system>",VariableValue="%HOMEDRIVE%%HOMEPATH%"
::delete the home environment variable
wmic ENVIRONMENT where "name='home'" delete
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| Rater | Score | Time |
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| tireless | +4 | 2008-01-03 17:52 |
Floor 10
Posted 2008-05-27 13:36 · 中国 江西 赣州 电信
::change the value of the path environment variable, add e:\tools
wmic ENVIRONMENT where "name='path' and username='<system>'" set VariableValue="%path%;e:\tools"
It seems the ; should be removed. If you don't remove it, there will be two ; after the modification.
Floor 11
Posted 2008-05-27 13:45 · 中国 上海 联通
Originally posted by tireless at 2008-5-27 01:36 PM:
It seems the ; should be removed. If you don't remove it, there will be two ; after the modification.
That depends on whether your %path% ends with a semicolon before the modification.
I suggest not removing this semicolon.
One extra semicolon doesn't matter.
But if one is missing, it will cause an error.
Floor 12
Posted 2008-05-27 14:08 · 中国 江西 赣州 电信
@post #11
No, my path does not end with a semicolon, and a semicolon gets added automatically when it is modified. Why don't you try it
[ Last edited by tireless on 2008-5-26 at 06:13 PM ]
No, my path does not end with a semicolon, and a semicolon gets added automatically when it is modified. Why don't you try it
[ Last edited by tireless on 2008-5-26 at 06:13 PM ]
Floor 13
Posted 2008-05-27 17:12 · 中国 上海 联通
I tested it. Even if there is a semicolon in the wmic command, it still won't result in two semicolons in path.
Environment:
XP SP2 EN
path ends with a semicolon
Environment:
XP SP2 EN
path ends with a semicolon
Floor 14
Posted 2008-11-13 16:06 · 中国 北京 鹏博士BGP
OK, learned something new!
Floor 15
Posted 2008-11-13 16:40 · 中国 江苏 泰州 电信
Really good, lots of colorful answers.
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