Background Process: bg

Run processes in the background

Description

bg supports two modes: it can either be run as a function block which will execute in the background, or it can take stopped processes and daemonize them.

Usage

POSIX only:

bg { code block }

bg fid

Examples

bg { sleep 5; out "Morning" }

Detail

The examples above will work on any system (Windows included). However the ctrl+z usage of backgrounding a stopped process (like Bash) is only supported on POSIX systems due to the limitation of required signals on non-platforms. This means the usage described in the examples is cross cross platform while bg int currently does not work on Windows nor Plan 9.

Synonyms

See Also


This document was generated from builtins/core/processes/bgfg_doc.yaml.

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Last built on Mon Oct 12 23:53:07 UTC 2026 against commit 6332fa16332fa1e89d3a5df5c6104d7f19d017367bb74f9.

Current version is 7.3.1232 (unknown) which has been verified against tests cases.