## Assigning Values to input Variables

Once a variable is declared in your configuration, you can set it:

- Individually, with the `-var foo=bar` command line option.
- In variable definitions files, either specified on the command line with the `-var-files values.pkrvars.hcl` or automatically loaded (`*.auto.pkrvars.hcl`).
- As environment variables, for example: `PKR_VAR_foo=bar`