From cc01e724910243fc1461847c10b5e6b1f0075fda Mon Sep 17 00:00:00 2001 From: Collin Funk Date: Thu, 26 Jun 2025 18:48:51 -0700 Subject: [PATCH] doc: mention that POSIX.1-2024 added dd iflag=fullblock * doc/coreutils.texi (dd invocation): Document that POSIX.1-2024 added iflag=fullblock. --- doc/coreutils.texi | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/doc/coreutils.texi b/doc/coreutils.texi index e05d3faf74..141cbc1f82 100644 --- a/doc/coreutils.texi +++ b/doc/coreutils.texi @@ -9921,7 +9921,8 @@ interpreted as a block count rather than a count of read operations. @end table -These flags are all GNU extensions to POSIX. +These flags are all GNU extensions to POSIX, except for @samp{fullblock} +which was added by POSIX.1-2024. They are not supported on all systems, and @samp{dd} rejects attempts to use them when they are not supported. When reading from standard input or writing to standard output, the @samp{nofollow} and -- 2.47.3