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docs/Linux-Commands/System/036-the-env-command.md

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+# The `env` command
+
+The `env` command in Linux/Unix is used to either print a list of the current environment variables or to run a program in a custom environment without changing the current one. 
+
+## Syntax
+
+```bash
+env [OPTION]... [-] [NAME=VALUE]... [COMMAND [ARG]...]
+```
+
+## Usage
+
+1. Print out the set of current environment variables
+    ```bash 
+    env 
+    ```
+2. Run a command with an empty environment
+   ```bash 
+    env -i command_name
+    ```
+3. Remove variable from the environment
+    ```bash 
+    env -u variable_name
+    ```
+4. End each output with NULL
+    ```bash 
+    env -0 
+    ```
+
+## Full List of Options
+
+|**Short Flag**   |**Long Flag**   |**Description**   |
+|:---|:---|:---|
+|`-i`|`--ignore-environment`|Start with an empty environment|
+|`-0`|`--null`|End each output line with NUL, not newline|
+|`-u`|`--unset=NAME `|Remove variable from the environment|
+|`-C`|`--chdir=DIR`|Change working directory to DIR|
+|`-S`|`--split-string=S`|Process and split S into separate arguments. It's used to pass multiple arguments on shebang lines|
+|`-v`|`--debug`|Print verbose information for each processing step|
+|-|`--help`|Print a help message|
+|-|`--version`|Print the version information|