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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Path variable seem to be ignored

Don't know why but some paths listed in the path variable seem to be ignored. For instance, processing, that when is executed from the right folder it runs without problem, but it is ignored whenever ...
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413 views

Environment variables and commands lost after Windows 8.1 upgrade

No sooner did I upgrade to windows 8.1 from windows 8, I found that I was unable to run commands from commandline like python, pip, cat,ls etc which are installed in the system when windows 8 existed. ...
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874 views

Forcing programs to be installed to another drive [duplicate]

I have an SSD as my main Windows drive, with a 640GB 2.5" HDD, partitioned to store programs and user settings, and also to act as backup (it's the only thing I had lying around at the time of ...
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26 views

Adding App to Path on Mac OS X

I'm in the process of migrating from Windows to Mac OS X. Right now, I'm trying to use this plugin in an application. The plugin states: Make sure you can find Magick++-config in your PATH. My ...
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41 views

set/modify environment variable for gnome/kde at runtime

Is there a way to modify or set environment variables in gnome or kde at runtime, ie. after logging in? I specifically need this for gnome, but knowing the kde method would be really useful too. If ...
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1answer
17 views

env command shows 3 times same path

When i run env it shows 3 times /usr/bin under PATH . Same for every path under PATH title. For example - my scala bin directory shows 3 times . However, in my .bash_profile, it is written just one ...
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16 views

Java with multiple versions on Windows [duplicate]

I have both Java 6 & 7 installed on my machine. My Windows' PATH variable has Java 6 JRE's location added to it. But when I open Command Prompt or Windows PowerShell and type java -version it ...
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56 views

Stop Windows %tmp% environment variable using short file name

I have a C++ application that is using the %tmp% variable (from the GetTempPath() function). Unfortunately there is a bug where it can't handle the tidle that may appear in the user's local temp ...
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1answer
135 views

Phusion Passenger Showing Environment Variables

I'm getting some Phusion Passenger errors with Ruby On Rails Problem is it's showing my environment variables in the error report. This is great in development, but what happens if my server faulters ...
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40 views

Apache2 SetEnv For Multiple VirtualHosts

I am looking to use a single declaration of a SetEnv var in my apache2.conf file & have that variable used by all the virtualhosts I currently have virtualhost-specific vars set up, but would ...
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1answer
71 views

Apache VirtualHost - Specific Env Vars

Successfully using SetEnv with virtualhosts on Apache2 Wondering if there's a way to set virtualhost specific env vars, or whether setting them at Apache-level makes them "global" / system-wide? We ...
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73 views

Would a longer PATH environment variable slow down a system?

In Windows 7, will a long system PATH environment variable slow down the system in any noticeable/tangible way? My system PATH variable is 45-entries deep. I have an i7 930 @ 4.2GHz, but out of ...
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165 views

Win7 resets HKCU/Environment/Temp and TMP on login

I once had a fresh installation of Win7 on an SSD drive. Bearing in mind what you always hear about write cycles on these things, first thing I did was changing the TEMP/TMP variables of SYSTEM and my ...
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13 views

Environment variable with different value [duplicate]

I operate a windows system with several applications, that all need a special home variable. But if I set this "home" variable, all applications use the same value. Is there a way to set this ...
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3answers
501 views

How can I add a program path to the Windows environment variables for easy command line access?

Let's say I want to add the following path to the Windows environment variables: C:\Program Files (x86)\VideoLAN\VLC\vlc.exe Such that I can simply type the following from a command line without using ...
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1answer
616 views

Environment Variable ORACLE_UNQNAME not defined

I'm trying to install Oracle 11gR2 Entreprise Edition but during database creation, I got this Error : Environment Variable ORACLE_UNQNAME not defined And when I tried to lunch 'emctl.bat' From ...
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2answers
472 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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737 views

setting https_proxy environment variable in a secure way

The following is the standard way suggested to set the environment variable for the https_proxy: export https_proxy=<username>:<password>@<proxy>:<port> But it clearly ...
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1answer
47 views

Does the order of the directories listed in the Windows PATH variable affect system performance in any meaningful way?

I've noticed that when programs add their directory to the PATH environmental variable, most append it to the end but a few add it at the beginning, before the windows directory. So it made me wonder, ...
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1answer
60 views

Bash: Need to export variables to parent process. Is the parent the same process?

I'd like to launch a script that sets and/or updates some environment variables. Unlike this question, I don't mind launching the script as . /path/to/my/script/myScript.sh to force the script to ...
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3answers
651 views

How to delete a file from the file system in Linux when I don't have permission?

I re-installed ns2, but didn't delete a file from the filesystem with path: /usr/bin/ns So when I type on my terminal: which ns I get: /usr/bin/ns Instead of the path I have set which is: ...
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211 views

Nested environment variable does not expanded

I can't explain the below strange issue. I have two system variables: PYTHONHOME = D:\Tools\ISDC_Tools\Scripting\Python.2.7 PYTHONPATH = %PYTHONHOME%;%PYTHONHOME%\Lib After creating a new cmd ...
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1answer
84 views

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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24 views

In MacOSX Mavericks, launching an app from the command line versus by double-clicking [duplicate]

In MacOSX Mavericks, what are the differences between launching an app by double-clicking it or through Spotlight, and from the command line? By launching an app such as Emacs from the command ...
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255 views

Change the timezone (TZ environment variable) for a running irssi session?

When travelling to other timezones, I set TZ=/usr/share/zoneinfo/current_timezone on remote shells where I log on to, including the shell in which I run irssi inside tmux. Can I change the TZ for a ...
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1answer
804 views

Why are the PATH environment variables handled differently when I run cmd.exe as admin?

Original post: When I start cmd.exe normally, my PATH variable only contains the paths from the system environment variable. Only when I start cmd.exe as admin does PATH contain a concatenation of ...
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209 views

PATH variable - System vs User - why is it dangerous to modify System PATH on Windows?

While installing MinGW, the users are warned about making changes to the System PATH variable: You should not alter the system path variable in any manner, or you will cause all sorts of problems ...
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2answers
144 views

Name “wmplayer” is not recognized as an executable file

I cannot run wmplayer from either cmd or PowerShell. My OS is Windows 7 64 bit. I can do it using start wmplayer but I cannot use parameters. Please, help me to handle it.
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42 views

What environment variables are set when I use ssh?

When I use ssh, I notice that my TERM variable is forwarded automatically. This is quite useful, but I'm wondering what other variables are forwarded or set. So far I've found the following ...
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1answer
20 views

Should I make `emacs` a symlink or environment variable?

When I apt-get install emacs I can just type emacs and it launches. But I decided to replace the apt repository version (23 currently) with the latest stable release (24.3). Now, I'd still like to ...
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0answers
56 views

Shell hangs after passing STDIN to EDITOR with -w parameter

I want to edit svn's svn:ignore property: svn propedit svn:ignore . This doesn't work: None of the environment variables SVN_EDITOR, VISUAL or EDITOR is set, and no 'editor-cmd' run-time ...
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1answer
102 views

How do I extend my PATH environment variable?

Being a power user, my %PATH% variable just isn't long enough to install everything I want to install. Is there any way I can extend the effective length of the variable, or otherwise get more paths ...
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1answer
40 views

Set ENV variable for all commands in current directory in mac os

Is there a way to run all commands in current directory with some ENV variables predefined? Example of what I need: I put some file, say .env in my directory, with: export SECRET='abcd123' Then I ...
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116 views

Correct way of setting Ruby2.1 as the go-to application when it referenced to/called via shell?

I have installed Ruby 2.1 on my headless Debian server (7.4) by downloading the source from https://www.ruby-lang.org/en/downloads/ and then running the routine of ./configure make make install ...
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1answer
433 views

Awesome WM: execute my aliases via run prompt?

I have aliases in my bashrc for a few programs. One example is: alias chrome='google-chrome --disk-cache-size=1000000000' How can I call this alias from the run prompt (modkey+r)? Im running ...
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votes
1answer
5k views

How to compare 2 strings in batch and determine if variable is alphabets

I have this code for /l %%a in (0, 1, 25) do ( if /i !TextAlphabet!==!Alphabet[%%a]! ( set AlphabetNumber=%%a ) ) !Alphabet[]! is an array containing alphabets. I tried echoing !TextAlphabet! and ...
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2answers
1k views

Strange PATH issue in Windows 7 - goes null after being set

I have some sort of a problem with the PATH system variable. Since I use a lot of cmd apps and scripts I've added a lot to it. But the string's length is not the issue. I've worked around this ...
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1answer
30 views

monit fails to support dbus session

I am trying to use monit to monitor and automatically issues like crashes, memory leaks and cpu hotspinning. For one application - one that uses DBus (serving and calling funcs) just will not start. ...
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59 views

Path Variable (for tex) Replaced

While installing gcc compiler, I realized I mistakenly replaced path variable for latex editor with path variable for gcc compiler. I have windows 8 and texstudio. what could be possible path variable ...
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1answer
50 views

How to create a shortcut in the launcher with specific enironment variable?

I want to start emacs with LANG environment variable set to en_US.UTF-8, and I don't want to affect other programs. In terminal, it could be realized using LANG=en_US.UTF-8 emacs. Then I created a ...
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2answers
105 views

env -i zsh | How is this magic possible?

I'm currently working, for school, on a home-made shell, therefore I'm kind of curious nowadays about how shell vars are set. Yes, this can be really exciting ! Anyway, we obviously have to deal with ...
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47 views

Exporting Variables – Reading Them Returns Blank?

Hi – I'm using Mac OS X (Mavericks), which should be UNIX compliant. In my .bash_login, I'm exporting variables for Cocos2D-X. I know this is executing, as I have a 'echo Test' line that executes ...
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59 views

Ubuntu: `env -i bash --norc`, but include essential variables such as HOME, DISPLAY? (where are these set?)

Is there an easy way to isolate a session of bash so that only essential variables (HOME, USER, DISPLAY, etc.) are preserved? (essential in that many programs fail if HOME, DISPLAY, TERM, SHELL, etc. ...
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51 views

ifs environment variable is not inherited

In Unix the IFS variable was often used to subvert system integrity. How it was fixed? The only answer I found is in wikipedia page http://en.wikipedia.org/wiki/Internal_field_separator which says: ...
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1answer
114 views

windows env variables not resolving

I have the following env variables: VIM_HOME: %ProgramFiles(x86)%\Vim\vim74 CMD: %USERPROFILE%\cmd PATH: ...%CMD%;%VIM_HOME%;... C:\Users\me\cmd\vim.bat @echo off start vim.exe %* Prompt: > ...
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3k views

TEMP vs TMP in Environment Variables

Is it right to have these two environment variables TEMP and TMP? If I make changes to one should I make the same changes to the other? For example I was installing cygwin and the directions told me ...
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1answer
257 views

ZSH: Where to place environment variable so that launched application can pick it up?

I need an environment variable KEY="value" made available to a GUI application before starting it. The launcher file (the one that places the icon on the desktop and sidebar in Ubuntu) has a value of ...
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2answers
47 views

how to set up an environment variable that it stores a path along with another env variable but doesnt expands

I want to know how to set up an environment variable that stores other environment variable but these environment variables doesn't gets expanded when I echo instead if I use eval echo then it should ...
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2answers
814 views

Is it safe to store critical passwords in server environment variables?

I have a cluster of servers, each with configuration files that currently contain plain-text passwords for sensitive, mission-critical systems (message queues, data stores, and other services). Some ...