Environment variables are system-wide variables which share the same value. These variables are often parsed by the shell when executing commands, and are expanded into their appropriate variable. For example, this allows users to move file locations without needing to update hard-coded paths in ...

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Effect of Windows environment variables (especially OMP_NUM_THREADS)

Does setting OMP_NUM_THREADS=1 in the global environment variables (via Control Panel -> Sytem -> Environment variables) affect only programs run from the command prompt or all programs?
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Too many folders in the path variable

I've encountered a strange issue - I can't launch Visual Studio, nor run simple commands from command prompt, seemingly due to my PATH variable being too long. Now that I look at it, I see that many ...
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Limitation in number of entries in System variables Windows 7 64-bit

I've encountered that there might be a limit of how many entries you can have in System Variables in Environment Variables, can someone verify my suspicion? I'm not talking about how many characters ...
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379 views

Setting system wide environment variable in Ubuntu 8.04 Server

This is my /etc/environment: HELLO="hello" Now I check that the environment is being set when connecting via ssh: ssh foobar@my_host env And this is the output: SHELL=/bin/bash ...
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What is the purpose of the environment variable asl.log?

I run Windows 7. I notice that there's an environment variable called asl.log. What is this thing? Who puts it there? What's the purpose of it? I searched and found only references to MacOS and ...
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Access environment variable on both OSX and Win7

I'm fairly sure this is impossible because of syntax issues, but here goes anyway... I'm using dropbox to sync some files that I need to access in both windows and osx. In the program I need to ...
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675 views

sudo -E not passing all variables

Reading the man pages I expected sudo -E to pass all environment variables to the subshell, but I am not getting the expected results. As expected, awesome: $ export ...
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4answers
2k views

Where is the Official list of Windows Environment Variables?

I'm working on some .bat stuff created in a legacy application, which uses many environment variables. I need to know exactly what is every one of them (%windir%, %os%, etc.). So I need the official ...
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Windows: Monitor Access to Environment Variables?

Programs (on Windows) often expect certain environment variables to be set. However, the name of these environment variables is often not well documented. E.g.: Does Eclipse expect %MINGW_HOME% or ...
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274 views

Using SETX to configure a pc's LM_LICENSE_FILE environment variable

Various Windows applications such as Matlab, Altair, Nastran etc use license servers, which require a system environment variable - LM_LICENSE_FILE, to be updated which would take a value along the ...
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654 views

Linux change environmental variables without rebooting for all shells

I am using Fedora 14 and I changed my hostname in /etc/sysconfig/network and by using the hostname command. The shell prompts correctly display the new hostname. However the terminal titles still ...
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Spawn a new terminal window (Mac OS X)?

I am often working in a process in the Terminal and I've set some variables and used cd and so forth. Then I'd like to open another Terminal window from there. Is there any way to do this?
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Environment variable ORACLE_UNQNAME not defined. Please set ORACLE_UNQNAME to database unique name

I have a batch file which starts the Oracle Services net start OracleOraDb11g_home1TNSListener net start OracleServiceORCL call C:\app\Edifixio\product\11.2.0\dbhome_1\BIN\emctl.bat start dbconsole ...
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1answer
62 views

Dynamic variable substitution in PATH

I want to run different versions of Java on the same machine (Linux Mint 17) with default to Java 7. So I put this into /etc/environment: JAVA_HOME="/tools/java/java7" JAVA7_HOME="/tools/java/java7" ...
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How do I substitute environment variables when I ouput a file?

I'd like to somehow spit out a file (which has env variable references) and substitute the actual values. This is what I've tried, but as you can see it's not working. Any ideas? -bash-3.00$ cat ...
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Alternative ways of passing PS1 env variable into Ubuntu for SSH session

I know that there are twenty thousand answers, none of them worked as expected, I'm more surprised than you are, so please consider reading the story first. I'm trying to achieve what appears to be a ...
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40 views

max length for PATH environment variable

Using Windows 7 x64 I've noticed that if you add too much stuff to your PATH environment variable it stops working. There appears to be a max length for the PATH environment variable and I'm curious ...
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277 views

How to set environment variables for a terminal application on OS X Yosemite?

I am trying to make ABD tool to work in my terminal and I found that the likely reason why I get the command not found warning is that I need to set the environment variable's path. I found that I ...
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8 views

VIDLE does not work path

I have Python 2.76 on Windows 7. Canopy, pyserial and now VIDLE I have 64 bit processor so I checked that I chose 32 bit for all the software as the Arduino tutorial I want to do suggested. VIDLE ...
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27 views

Difference between su and su -c (environment variables?) when running db2?

When I type this: su <user> -c "/home/<user>/sqllib/bin/db2 catalog tcpip node <dbName> remote <ip> server <port>" I get this error message: SQL10007N Message "-1390" ...
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7answers
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What are PATH and other environment variables, and how can I set or use them?

Questions about setting environment variables the PATH are very common here, and in most cases the answers are very similar to each other. In the future it would be nice to have a good Q/A for ...
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How do I set the TEMP environment variable for the “Network Service” user?

We have a system that uses Path.GetTempFile and Path.GetTempPath calls to work with temporary files fairly frequently. This system also runs as the "Network Service" user. We're finding that we're ...
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Cannot resolve %windir% / Cannot modify %path% or %path% being reset on boot

See Updates 3 and 4 below for how the issue has evolved My computer (Windows 7 x64, Lenovo Thinkpad T530) is having an issue resolving %windir%. After boot-up, everything works fine. At some ...
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21 views

How do I set the PATH variable for a service that's running as a non-login user?

I'm running a GitLab server on a Linux machine using Nginx as a Webserver. Several processes (started either manually as root with /etc/init.d/foo start or automatically as sub-processes) run as ...
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2answers
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How to shrink the prompt of a long path using environment variables in OS X (extend '~')

I've seen this working with the gemset environment, I would like to reproduce it now that I need to work on a very indented directory path. Basically I had a $GEM_HOME environment variable pointing ...
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330 views

How to include environment variable in bash line CURL?

Trying to get Transmission to notify when download complete. This works: curl -u <my-api-token>: \ -X POST https://api.pushbullet.com/v2/pushes \ --header 'Content-Type: application/json' ...
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Can I change the PATH environmental variable in Windows 7 without restarting?

Is there anyway to change the PATH environment variable (or variables in general) on Windows 7 Exterprise (64 bit) and have it take effect in PowerShell or the command prompt (cmd.exe) without ...
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38 views

Windows path and semicolon

In Windows 8.1 I have an environment variable LATEX equal to C:\Program Files\MiKTeX 2.9\miktex\bin\x64 and the path variable set to %JAVA_HOME%\bin;%ANT_HOME%\bin;%LATEX% The problem is ...
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58 views

msys2 shell uses different PATH depending on launch

When I start the msys shell via the created shortcut, it executes cmd.exe /A /Q /K C:\msys64\msys2_shell.bat and it uses the current PATH environment variable. But when I start ...
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22 views

Why does system PATH seem to be cleared?

I have this strange situation at work where me and some other guys regularly have problems with our system PATH environment variable. Whenever that happens, we have problems like shortcuts that stop ...
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1answer
22 views

Unset bash variables referring to non-existent directories

I have a file which is sourced by an application, adding relevant directories to $PATH and $LD_LIBRARY_PATH. This is fine, but it results in somewhat excessive pollution of the $PATH and ...
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25 views

Has anyone gone through relocating the %ProgramFiles% directory, and can comment on the process / pro/con's?

There are many questions on this SE subsite that ask if it is possible/how. I have commented on some of them that suggest changing the HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\ProgramFilesDir ...
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Overcoming the 1024 character limit with setx

I am trying to set environment variables using the setx command, such as follows setx PATH "f:\common tools\git\bin;f:\common tools\python\app;f:\common tools\python\app\scripts;f:\common ...
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29 views

When running a program as a Windows 7 service, where does the HOMEPATH variable map to?

I have a program that's being run as a Windows 7 service. In the program, the HOMEPATH environment variable is being used to set the location of a file. Normally, when the program is simply ran at a ...
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2answers
5k views

On windows 7 admin can't change environment variables and virtual memory,etc

Yesterday I want to set up a web server on my computer.After installing some software(probably MySQL cause the problem,I think),there is an odd problem with my Windows 7. I'm an admin user,but now I ...
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1answer
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In bash, declare an alias that depends on current variable content

I would like to declare an alias in my .bash_profile that will use the content of a variable when the alias is used and not when it is declared. Ex: alias goSomeWhere="cd $BASE/somewhere" When ...
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1answer
22 views

Java Path Set Issue

I am using win server 2008, Trying to set java path. I set it in both user variables and system variables. yet, I couldn't access java. But when I check in java installed path It is working fine ...
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2answers
30 views

2 java versions and unable to change environment variable

I am working on Mac OS 10.9 I did not know that macs come with java by default. So I installed my own java(version- 1.8.0_20) Now here is the confusion - I have a java in the following locations - ...
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Suppressing the “Picked up _JAVA_OPTIONS” message

I'm using _JAVA_OPTIONS to set some defaults for Java on RHEL. It works fine but now every time I start java I get the following message Picked up _JAVA_OPTIONS: -foo -bar -baz is it possible to ...
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1answer
17 views

Call “Environment variables” dialog from Win-r

In Windows, if one presses Win-r, and types there, e.g. control the control panel opens. Is there a Win-r shortcut for environment variables dialog?
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33 views

set environment variable from batch

When I set a environment variable envir using setx command, It seems to not actually 'set' in environment. setx envir "windows" if 1==1 ( setx envir "unix" ) echo %envir% set The set command ...
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2answers
140 views

Reclaim home directory

The home directory is where a user is supposed to keep their personal files, for example documents and music. On my computer this is C:\Users\Steven also known as the %USERPROFILE% variable. The ...
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84 views

Is there a way to “source” a sh script from the fish shell?

I like to put many of my environment variable definitions in the .profile script. If I am using a POSIX-compatible interactive shell like bash, I can use the source command to re-export the ...
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1answer
66 views

Windows Environment Variables

I am very confused on what is incorrect with my Windows Path variable. In my System Settings I have the System Variable Path set to: ...
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7k views

Is it possible to “declare” a windows cmd-file (batch-file) as 32 bit?

Background: We do quite some scripting and little helpers with batch files (xyz.cmd) at work. Windows 7 is only now starting to become widespread here, and obviously, we hit the problems associated ...
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Are there rules to Windows 7 Environment variable names?

On my Windows 7 computer, I created some custom user environment variables (right-click computer > properties > "Advanced system settings" > "Environment Variables..." > "New..." for "User variables ...
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ERROR: Invalid syntax. Default option is not allowed more than '2' time(s). Type “SETX /?” for usage

I am trying to set my environment variable for my system using setx PATH="%PATH%;c:\PROGRA~2\Vim\vim74;" command in cmd. I get ERROR: Invalid syntax. Default option is not allowed more than '2' ...
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553 views

What's the ZSH equivalent of BASH's $PROMPT_COMMAND?

BASH supports a $PROMPT_COMMAND environment variable that defines a command to be executed before any first-level interactive prompt. I'm looking for a ZSH equilvalent of that. The documentation says ...
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82 views

How to configure AUCTeX in Windows 7?

Help me, please! This is my 3rd attempt at a clean install of EMACS/AUCTeX in Windows 7. I'm following Joachim Schlosser's installation guide to AUCTeX but I'm getting confused at least on 2 points. ...
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49 views

Installing Cygwin with MinGW in windows

I wanted to install Cygwin in the C:\Cygwin (which is shown by default during installation). I have the C:\MinGW installed in that directory too(I mean C:\) Will this cause any problem when I install ...