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-rw-r--r--doc/coreutils.texi3
1 files changed, 2 insertions, 1 deletions
diff --git a/doc/coreutils.texi b/doc/coreutils.texi
index 2d0ce62c7..8c54fc443 100644
--- a/doc/coreutils.texi
+++ b/doc/coreutils.texi
@@ -10308,7 +10308,8 @@ The valid @var{format} directives for files with @option{--format} and
@item %Z - Time of last change as seconds since Epoch
@end itemize
-The valid format sequences for file systems are:
+When listing file system information (@option{--file-system} (@option{-f})),
+you must use a different set of @var{format} directives:
@itemize @bullet
@item %a - Free blocks available to non-super-user