Menu
Home
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
/dev/full
open-in-new
<p>In <a href="/facts/Linux/9FvCKSTq">Linux</a>, <a href="/facts/FreeBSD/RKsFTm7F">FreeBSD</a>, <a href="/facts/NetBSD/PTm5HWls">NetBSD</a> /dev/full, or the always-full device, is a <a href="/facts/Special_file/t8ISnXft">special file</a> that always returns the error code <a href="/facts/ENOSPC/R4NsXaBc">ENOSPC</a> (meaning "No space left on device") on writing, and provides an infinite number of zero bytes to any <a href="/facts/Process_(computing)/Vcq7EnUV">process</a> that reads from it (similar to <a href="/facts/%2fdev%2fzero/C8EFYqYx">/dev/zero</a>). This device is usually used when testing the behaviour of a program when it encounters a "disk full" error. </p> $ echo "Hello, World!" > /dev/full bash: echo: write error: No space left on device