Added SOA plugin

plugin/named.vim

@@ -0,0 +1,12 @@
+" Inspired by http://www.debian-administration.org/article/381/Updating_bind_serial_numbers_automatically
+
+function UPDSERIAL(date, num)
+  if (strftime("%Y%m%d") == a:date)
+    return a:date . a:num+1
+  endif
+  return strftime("%Y%m%d") . '01'
+endfunction
+
+command Soa :%s/\(2[0-9]\{7}\)\([0-9]\{2}\)\(\s*;\s*serial\s*\)/\=UPDSERIAL(submatch(1),submatch(2)) . submatch(3)/g
+
+autocmd BufNewFile,BufRead /etc/bind/primary/* Soa