Audit unlink(1)

One small thing, use argv0 in usage.
Also, add a blank line in link.c which I forgot earlier.

README

@@ -82,7 +82,7 @@ The following tools are implemented ('*' == finished, '#' == UTF-8 support,
 =*  uname           yes                          none
 #*  unexpand        yes                          none
 =*  uniq            yes                          none
-=*  unlink          yes                          none
+=*| unlink          yes                          none
 =*  uudecode        yes                          none
 =*  uuencode        yes                          none
 #*  wc              yes                          none

link.c

@@ -19,6 +19,7 @@ main(int argc, char *argv[])
 
 	if (argc != 2)
 		usage();
+
 	if (link(argv[0], argv[1]) < 0)
 		eprintf("link:");
 

unlink.c

@@ -6,7 +6,7 @@
 static void
 usage(void)
 {
-	eprintf("usage: unlink file\n");
+	eprintf("usage: %s file\n", argv0);
 }
 
 int