WIN 7 and PATH variable

Definition :
The system path is a list of folders, separated by a semicolon, that identifies the folders that the system should search when looking for files that are called from the Run dialog box, command line, or other processes. Normal program installation changes this path to include the program’s installation path.
PATH may be set on a system and user level.
An alternative to setting the path at system level is to change it at user level; however, doing so will affect only your logon session and not other users who might use the computer or system processes, which might cause confusion and unexpected behavior.

How to change the PATH variable :
1. Go to : Start – Settings – Control Panel – System
2. Select the Advanced tab.
3. Click the Environment Variables button.
4. Under System Variables, select Path, then click Edit.
You’ll see a list of folders, as this example shows: C:\Program Files\Windows Resource Kits\Tools\;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;C:\Program Files\Support Tools\;C:\Program Files\Common Files\Roxio Shared\DLLShared;C:\Program Files\Common Files\Ulead Systems\MPEG;C:\Program Files\Intel\DMIX;C:\Program Files\Executive Software\Diskeeper\;C:\Program Files\Bonjour\;C:\Program Files\QuickTime\QTSystem\;C:\Program Files\Misc
You can add additional folders that you want to include in searches, with “;” at the beggining and at the end. Click OK.
You’ll need to restart the processes (e.g., command prompt) that use the system path to see the added folders.

Note1 : if you type in Start/”Run” “Environment” (no “), you will get the list of all environment variables.
Note2 : WIN 2012 does NOT have a PATH variable, so you only add it in the above mentioned place.

Here is the place from where I took the above mentioned : link1. And another good link2.

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