On Sat, 25 Mar 2006, Zafer Aydogan wrote:

>  /* no arguments is equivalent to '-a' */
>         if (!namesonly && argc < 1)
>                 all = 1;

Or diff for netbsd-2:

Index: sbin/ifconfig/ifconfig.8
===================================================================
RCS file: /cvsroot/src/sbin/ifconfig/ifconfig.8,v
retrieving revision 1.72
diff -b -u -r1.72 ifconfig.8
--- sbin/ifconfig/ifconfig.8	1 Mar 2004 00:19:06 -0000	1.72
+++ sbin/ifconfig/ifconfig.8	25 Mar 2006 00:28:53 -0000
@@ -594,6 +594,9 @@
 limits this to broadcast interfaces, and
 .Fl s
 omits interfaces which appear not to be connected to a network.
+When no arguments are given,
+.Fl a
+is implied.
 .Pp
 The
 .Fl l
Index: sbin/ifconfig/ifconfig.c
===================================================================
RCS file: /cvsroot/src/sbin/ifconfig/ifconfig.c,v
retrieving revision 1.141.4.2
diff -b -u -r1.141.4.2 ifconfig.c
--- sbin/ifconfig/ifconfig.c	24 Jul 2005 01:58:38 -0000	1.141.4.2
+++ sbin/ifconfig/ifconfig.c	25 Mar 2006 00:28:58 -0000
@@ -408,8 +408,16 @@
 {
 	int ch;
 
-	/* Parse command-line options */
 	aflag = mflag = vflag = zflag = 0;
+
+	/* When no arguments are given, -a is implied.  */
+	if (argc < 2) {
+		af = ifr.ifr_addr.sa_family = afs[0].af_af;
+		printall(NULL);
+		exit(0);
+	}
+
+	/* Parse command-line options */
 	while ((ch = getopt(argc, argv, "AabCdlmsuvz"
 #ifdef INET6
 					"L"


 Jeremy C. Reed

echo ':6DB6=88>?;@69876tA=AC8BB5tA6487><' | tr '4-F' 'wu rofIn.lkigemca'