Keep in mind that variable names are case-sensitive, meaning that $User and $USER are entirely unrelated from the shell's point of view. Many well-known and standard variables are spelled out in capital letters to signify just that. Unix derivatives (FreeBSD, GNU / Linux, OS X)Įnvironment Variables in Linux are prefixed with a dollar sign ($) such as $HOME or $HOSTNAME. Like most names in Windows, these are case-insensitive. %WINDIR%, %SystemRoot%, %USERPROFILE%, and %APPDATA%. Here is a list of default environment variables, which are built into Windows. Windows XP Service Pack 2 Support Tools List of Windows Environment Variables You must manually add setx to versions of Windows earlier than Vista. Note that variables may expand to a string with spaces (e.g., %PATH% becomes C:\Program Files), so it is best to include quotes around values that contain any variables. Unlike set, there is no equals sign and the value should be enclosed in quotes if it contains any spaces. To create/set a variable permanently, use setx varname "value": C:\>setx Funn圜atPictures "C:\Users\Daniel\Pictures\Funny Cat Pictures"Ĭ:\Users\Daniel\Pictures\Funny Cat Pictures The duration of the Command Prompt process in which they are set,Īnd are available to processes that are started after the variables were set. To append/add a variable, use set varname=value %varname%: C:\>set Penguins=C:\LinuxĮnvironment variables set in this way are available for (the rest of) To create/set a variable, use set varname=value: C:\>set Funn圜atPictures=C:\Users\Daniel\Pictures\Funny Cat PicturesĬ:\>set Funn圜atPicturesTwo=%USERPROFILE%\Pictures\Funny Cat Pictures 2 To display an environment variable's value in cmd.exe, type echo %name%. Command Line FormatĮnvironment Variables in Windows are denoted with percent signs (%) surrounding the name: %name% Another open source program for Windows with which the path environment can be edited very conveniently is Path Editor. There is also Rapid Environment Editor, which helps setting and changing environment variables in Windows without the need to go deep into the system settings. Their current values upon launch are made available to all programs. You can view and edit their values there. There are many other ways of reaching the same place, such as by typing "environment variables" in the Start Menu/Screen search box and so on.Įnvironment variables in Windows are separated into user and machine/system specific values.
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