BSD 4_3 release

[unix-history] / usr / man / man1 / dd.1

diff --git a/usr/man/man1/dd.1 b/usr/man/man1/dd.1
index b0b649c..4927676 100644 (file)
--- a/usr/man/man1/dd.1
+++ b/usr/man/man1/dd.1
@@ -1,4 +1,10 @@
-.TH DD 1  "18 January 1983"
+.\" Copyright (c) 1980 Regents of the University of California.
+.\" All rights reserved.  The Berkeley software License Agreement
+.\" specifies the terms and conditions for redistribution.
+.\"
+.\"    @(#)dd.1        6.1 (Berkeley) 4/29/85
+.\"
+.TH DD 1 "April 29, 1985"

 .UC 4
 .SH NAME
 dd \- convert and copy a file
 .UC 4
 .SH NAME
 dd \- convert and copy a file


@@ -198,3 +204,24 @@ the CACM Nov, 1968.
 The `ibm' conversion, while less blessed as a standard,
 corresponds better to certain IBM print train conventions.
 There is no universal solution.
 The `ibm' conversion, while less blessed as a standard,
 corresponds better to certain IBM print train conventions.
 There is no universal solution.

+.br
+One must specify ``conv=noerror,sync'' when copying
+raw disks with bad sectors to insure 
+.I dd
+stays synchronized.
+.PP
+Certain combinations of arguments to 
+.I conv=
+are permitted.
+However, the
+.I block
+or
+.I unblock
+option cannot be combined with
+.IR ascii ,
+.IR ebcdic ""
+or
+.IR ibm .
+Invalid combinations
+.I "silently ignore"
+all but the last mutually-exclusive keyword.