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38 lines
1.1 KiB
Markdown
Executable File
# The `printenv` command
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The `printenv` prints the values of the specified [environment _VARIABLE(s)_](https://www.computerhope.com/jargon/e/envivari.htm). If no [_VARIABLE_](https://www.computerhope.com/jargon/v/variable.htm) is specified, print name and value pairs for them all.
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### Examples:
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1. Display the values of all environment variables.
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```
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printenv
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```
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2. Display the location of the current user's [home directory](https://www.computerhope.com/jargon/h/homedir.htm).
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```
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printenv HOME
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```
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3. To use the `--null` command line option as the terminating character between output entries.
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```
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printenv --null SHELL HOME
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```
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*NOTE: By default, the* `printenv` *command uses newline as the terminating character between output entries.*
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### Syntax:
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```
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printenv [OPTION]... PATTERN...
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```
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### Additional Flags and their Functionalities:
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|**Short Flag** |**Long Flag** |**Description** |
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|:---|:---|:---|
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|`-0`|`--null`|End each output line with **0** byte rather than [newline](https://www.computerhope.com/jargon/n/newline.htm).|
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|`--help`|<center>-</center>|Display a help message, and exit.|
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