How do "environment variables" work when executing them in the same line with a command?
22578
How do I set an environment variable on the command line and have it appear in commands?
33584
How to determine where an environment variable came from?
67121
Setting system-wide environment variable using /etc/environment
109642
How can I display the contents of an environment variable from the command prompt in Windows 7?
120003
How does pipe work in bash commands?
60776
What's the best distro/shell-agnostic way to set environment variables?
57604
Set variable conditionally on command line
96083
Bash command as variable
67141
How to set system-wide environment variables on OS X Mavericks
3585
What exactly happens when a built-in command is run in a shell?
28269
Referencing environment variables *in* /etc/environment?
49325
set environment variables from stdout
6241
How can I make environment variables "exported" in a shell script stick around?
81183
How can I set env variables so that KDE recognizes them?
114278
Environment Variables for Windows' Built-in Libraries?
150258
Why does an inline variable definition work but a previous line does not for an aws command?
9919
Why do people write #!/usr/bin/env python on the first line of a Python script?