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authorJason McIntyre <jmc@cvs.openbsd.org>2014-02-14 17:44:02 +0000
committerJason McIntyre <jmc@cvs.openbsd.org>2014-02-14 17:44:02 +0000
commit49f6c9cf1d30c5144e492c2b058fa8782a70675e (patch)
tree01cc7ff268d56a43c73dead923509550d1f3b03f
parent724a28ef35e5e1e454bb904ab2a6a5fb9ce4ca62 (diff)
some general and portability notes;
ok millert schwarze
-rw-r--r--bin/echo/echo.120
1 files changed, 18 insertions, 2 deletions
diff --git a/bin/echo/echo.1 b/bin/echo/echo.1
index 580fc242d14..81adae975c3 100644
--- a/bin/echo/echo.1
+++ b/bin/echo/echo.1
@@ -1,4 +1,4 @@
-.\" $OpenBSD: echo.1,v 1.20 2010/09/03 09:53:20 jmc Exp $
+.\" $OpenBSD: echo.1,v 1.21 2014/02/14 17:44:01 jmc Exp $
.\" $NetBSD: echo.1,v 1.7 1995/03/21 09:04:26 cgd Exp $
.\"
.\" Copyright (c) 1990, 1993
@@ -33,7 +33,7 @@
.\"
.\" @(#)echo.1 8.1 (Berkeley) 7/22/93
.\"
-.Dd $Mdocdate: September 3 2010 $
+.Dd $Mdocdate: February 14 2014 $
.Dt ECHO 1
.Os
.Sh NAME
@@ -52,7 +52,12 @@ characters and followed by a newline
.Pq Sq \en
character, to the standard
output.
+.Pp
When no operands are given, only the newline is written.
+The -- operand,
+which generally denotes an end to option processing,
+is treated as part of
+.Ar string .
.Pp
The options are as follows:
.Bl -tag -width Ds
@@ -76,9 +81,20 @@ The flag
.Op Fl n
is an extension to that specification.
.Pp
+The
+.Nm
+utility does not support any of the backslash character sequences
+mandated by the
+X/Open System Interfaces option of the
+.St -p1003.1-2008
+specification.
+.Pp
.Nm
also exists as a built-in to
.Xr csh 1
and
.Xr ksh 1 ,
though with a different syntax.
+.Pp
+Where portability is paramount, use
+.Xr printf 1 .