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-rw-r--r--doc/coreutils.texi12
1 files changed, 8 insertions, 4 deletions
diff --git a/doc/coreutils.texi b/doc/coreutils.texi
index aece931f2..f089e435c 100644
--- a/doc/coreutils.texi
+++ b/doc/coreutils.texi
@@ -11229,11 +11229,15 @@ The program accepts the following options. Also see @ref{Common options}.
@itemx --all
@opindex -a
@opindex --all
-@cindex automounter file systems
@cindex ignore file systems
-Include in the listing dummy file systems, which
-are omitted by default. Such file systems are typically special-purpose
-pseudo-file-systems, such as automounter entries.
+Include in the listing dummy, duplicate, or inaccessible file systems, which
+are omitted by default. Dummy file systems are typically special purpose
+pseudo file systems such as @samp{/proc}, with no associated storage.
+Duplicate file systems are local or remote file systems that are mounted
+at separate locations in the local file hierarchy, or bind mounted locations.
+Inaccessible file systems are those which are mounted but subsequently
+over-mounted by another file system at that point, or otherwise inaccessible
+due to permissions of the mount point etc.
@item -B @var{size}
@itemx --block-size=@var{size}