Top "Environment-variables" questions

Environment variables are a set of dynamic named values that can affect the way running processes will behave on a computer.

Set environment variables from file of key/value pairs

TL;DR: How do I export a set of key/value pairs from a text file into the shell environment? …

bash variables environment-variables
How do I set environment variables from Java?

How do I set environment variables from Java? I see that I can do this for subprocesses using ProcessBuilder. I …

java environment-variables
Reading and writing environment variables in Python?

My python script which calls many python functions and shell scripts. I want to set a environment variable in Python (…

python environment-variables
How to set CATALINA_HOME variable in windows 7?

I have downloaded apache-tomcat-7.0.35. My JDK version is jdk1.6.0_27. How do I configure CATALINA_HOME as an environment variable and …

java tomcat environment-variables java-home catalina
Setting a system environment variable from a Windows batch file?

Is it possible to set a environment variable at the system level from a command prompt in Windows 7 (or even …

windows batch-file cmd environment-variables
Recommended way to get hostname in Java

Which of the following is the best and most portable way to get the hostname of the current computer in …

java network-programming environment-variables hostname
OpenSSL and error in reading openssl.conf file

I am running windows xp 32bit I just downloaded Openssl from the following URL and installed it. http://www.slproweb.…

windows configuration openssl environment-variables
What are the special dollar sign shell variables?

In Bash, there appear to be several variables which hold special, consistently-meaning values. For instance, ./myprogram &; echo $! will return …

bash environment-variables dollar-sign
What is the LD_PRELOAD trick?

I came across a reference to it recently on proggit and (as of now) it is not explained. I suspect …

c linux environment-variables