# exec command

The exec command runs the current process
on the specified ABS area. This has the effect of changing the environment
of the D3 Virtual operating system for this process, until log off
time. At log off, the abs file is automatically
reset to the dm,abs, file.

Warning: Never delete the abs file currently being used! This returns the operating system code
to overflow and hangs the system.

## Syntax

```
exec file.reference
```

## See also

- [ABS](https://d3codex.com/definitions/abs/)
- [abs file](https://d3codex.com/systemfiles/abs-file/)
- [create-abs command](https://d3codex.com/tcl/create-abs-command/)
- [dm macro](https://d3codex.com/tcl/dm-macro/)
- [list-abs macro](https://d3codex.com/tcl/list-abs-macro/)
- [set-abs command](https://d3codex.com/tcl/set-abs-command/)
- [system-coldstart macro](https://d3codex.com/tcl/system-coldstart-macro/)

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Source: https://d3codex.com/tcl/exec-command/ - part of the D3Codex reference.