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-rw-r--r--doc/coreutils.texi6
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/coreutils.texi b/doc/coreutils.texi
index 81e3b911c..b95f8dc50 100644
--- a/doc/coreutils.texi
+++ b/doc/coreutils.texi
@@ -7719,6 +7719,12 @@ platforms that distinguish binary from text I/O.
Use text I/O. Like @samp{binary}, this option has no effect on
standard platforms.
+@item fullblock
+@opindex fullblock
+Read full blocks from input if possible. read() may return early
+if a full block is not available, so retry until data is available
+or end of file is reached. This flag can be used only for the iflag option.
+
@end table
These flags are not supported on all systems, and @samp{dd} rejects