zero(4)

zero(4) The zero device

Overview
Files
Releases
See also
Referred to by

zero4

The zero device

zero(3tcl) zero(4) zero(4freebsd)

Linux FreeBSD OpenBSD

Overview

The zero device provides an infinite stream of null (zero) bytes.

Files

/dev/zero

Releases

55 releases since OpenBSD 2.7; the text changed 3 times.

2.7
2.8–3.3
3.4–4.1
4.2–8.0

See also

null(4) data sink

Referred to by

sshd_config(5) OpenSSH daemon configuration file null(4) data sink full(4) always full device Config::Model::models::Sshd(3pm) Configuration class Sshd Config::Model::models::Sshd::MatchElement(3pm) Configuration class Sshd::MatchElement full(4freebsd) the full device null(4freebsd) the null device gzero(4) GEOM-based zero disk/block device lindev(4freebsd) Linux-specific pseudo devices support geom_zero(4) GEOM-based zero disk/block device

From man 8.0-current-20261101 in OpenBSD 8.0-current (2026-11-01). Parsed by carta from the page's mdoc source.

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