---
syntax: markdown
tags: [tldr, common]
source: https://github.com/tldr-pages/tldr.git
---
# env

> Show the environment or run a program in a modified environment.
> More information: <https://www.gnu.org/software/coreutils/manual/html_node/env-invocation.html>.

- Show the environment:

`env`

- Run a program. Often used in scripts after the shebang (#!) for looking up the path to the program:

`env {{program}}`

- Clear the environment and run a program:

`env {{[-i|--ignore-environment]}} {{program}}`

- Remove variable from the environment and run a program:

`env {{[-u|--unset]}} {{variable}} {{program}}`

- Set a variable and run a program:

`env {{variable}}={{value}} {{program}}`

- Set one or more variables and run a program:

`env {{variable1=value variable2=value variable3=value ...}} {{program}}`

- Run a program under a different name:

`env {{[-a|--argv0]}} {{custom_name}} {{program}}`
