Background
Bind 9.9 stores zone files in raw format. This makes is hard to troubleshoot, or perform scripted bulk operations on many files.
There is a simple configuration option for Bind that will instantly change all raw format zones to plain text.
To find this option, you would need to find the correct configuration file which could differ between Debian and Redhat derivatives.
On Debian/Ubuntu:
/etc/bind/named.conf includes the file named.conf.options
Edit that file and look for the options { section.
When you’re done your configuration file will look like this:
# cat named.conf.options
options {
masterfile-format text;
...
Now do service named restart and automagically all your zones file will be in clear text.