ubuntu:environment_variables
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Table of Contents
Ubuntu - Environment variables
Environment Variables are dynamic values which affect the processes or programs on a computer.
Environment variables are case-sensitive and usually they are created in upper case.
Common Environment Variables
| Variable | Description |
|---|---|
| PATH | This variable contains a colon (:)-separated list of directories in which your system looks for executable files. |
| USER | The username |
| HOME | Default path to the user's home directory |
| EDITOR | Path to the program which edits the content of files |
| UID | User's unique ID |
| TERM | Default terminal emulator |
| SHELL | Shell being used by the user |
Commands for Environment Variables
Environment variables are case-sensitive and usually they are created in upper case.
| Command | Description |
|---|---|
| echo $VARIABLE | To display value of a variable |
| env | Displays all environment variables |
| VARIABLE_NAME= variable_value | Create a new variable |
| unset | Remove a variable |
| export Variable=value | To set value of an environment variable |
ubuntu/environment_variables.1576442317.txt.gz · Last modified: 2020/07/15 09:30 (external edit)