doc: nft.8 document use of -f option to start nft scripts

The man page didn't document nft scripts at all before, so putting that with the
-f option seemed as good a place as any. It does work to start scripts
is also updated.

Signed-off-by: Duncan Roe <duncan_roe@optusnet.com.au>
Signed-off-by: Florian Westphal <fw@strlen.de>

diff --git a/doc/nft.xml b/doc/nft.xml
index 2dec0aa12fe92a5d9894d3b5c1900302c49c2ed8..432f1c4d510d8f29efb1a22b022c794afbeacc4f 100644 (file)
--- a/doc/nft.xml
+++ b/doc/nft.xml
@@ -168,6 +168,9 @@ vi:ts=4 sw=4
                                        <para>
                                                Read input from <replaceable>filename</replaceable>.
                                        </para>
+                                       <para>
+                                               nft scripts must start <command>#!/usr/sbin/nft -f</command>
+                                       </para>
                                </listitem>
                        </varlistentry>
                        <varlistentry>