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-rw-r--r--usr.bin/units/units.13
1 files changed, 3 insertions, 0 deletions
diff --git a/usr.bin/units/units.1 b/usr.bin/units/units.1
index a6fa090fe4c0..f76e4629c457 100644
--- a/usr.bin/units/units.1
+++ b/usr.bin/units/units.1
@@ -8,6 +8,7 @@
.Sh SYNOPSIS
.Nm
.Op Fl f Ar filename
+.Op Fl H Ar filename
.Op Fl qvUV
.Op Ar from-unit to-unit
.Sh OPTIONS
@@ -17,6 +18,8 @@ The following options are available:
Show an overview of options
.It Fl f Ar filename No , Fl -file Ar filename
Specify the name of the units data file to load.
+.It Fl H Ar filename No , Fl -historyfile Ar filename
+Ignored, for compatibility with GNU units.
.It Fl e , Fl -exponential
Behave as if -o '%6e' was typed.
.It Fl q No , Fl -quiet