an improvement

homepage/homepage.local

@@ -4,16 +4,30 @@ set -x
 
 for f in ./blah/*.html
 do
-	f="$(printf '%s\n' "$f" | sed 's,./blah/,,')"
+	cat "$f"
+	awk '
+BEGIN { n = 0; }
+/^\$!NAVIGATION$/ {
+	if(++n == 1){
+		print $0 "\n\n" substr(FILENAME, 8, 10) "\n"
+	}else
+		print "\n" $0;
+}
+!/^\$!NAVIGATION$/ { print $0 }
+' "$f" >"$f.tmp" \
+		&& mv "$f.tmp" "$f" \
+		|| rm "$f.tmp"
+	f="$(printf '%s\n' "$f" | sed -e 's,./blah/,,' -e 's,\.html$,,')"
+	sed -i "./blah/$f.html" -e 's_\$!NAVIGATION_&\n'"$f"'\n_1'
 	test -n "$last" \
-		&& sed -i "./blah/$last" \
-			-e "s,\$!NAVIGATION,$nav<A HREF=\"$f\">\&gt;</A>,g" \
-		&& nav="<A HREF=\"$last\">\&lt;</A>" \
+		&& sed -i "./blah/$last.html" \
+			-e "s,\$!NAVIGATION,$nav<A HREF=\"$f.html\">\&gt;</A>,g" \
+		&& nav="<A HREF=\"$last.html\">\&lt;</A>" \
 		|| true
 	nav="$nav<A HREF=\"index.html\">^</A>"
 	last="$f"
 done
-sed -i "s,\$!NAVIGATION,$nav,g" "./blah/$last"
+sed -i "s,\$!NAVIGATION,$nav,g" "./blah/$last.html"
 
 ls ./blah/*.html \
 	| sed	-e 's_.*/__g' \