How can my Java code read OS environment variables?
110529
Can we read the OS environment variables in Java?
88821
How do I get and set Environment variables in C#?
152015
Can a script modify an environment variable of its calling shell?
109414
Setting GUI Visible Environment Variables with OS Catalina
22322
Setting environment variables in Linux using Bash
65209
How do I check OS with a preprocessor directive?
134667
How can I set an environment variable which contains newline characters?
6241
How can I make environment variables "exported" in a shell script stick around?
153688
Where does the JVM store primitive variables?
58433
What's a concise way to check that environment variables are set in a Unix shell script?
32654
How to know where shell variables and functions are set?
789
How do I set a user environment variable? (permanently, not session)
3723
Can a shell script set environment variables of the calling shell?
16368
How to get the path of a running JAR file?
42029
Where do I find out how a command/environment is defined?
40037
How to detect the OS from a Bash script?
63101
How to set environment variable in systemd service?