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Google Docs: How to Download Specific (or All) Documents to Your Computer

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While Google Docs is an extremely convenient way to store your documents, what happens if you need to view your files when you are offline or when the service is down? You can easily select which files to download (and even download all of them) into a zip file for storing onto your computer.

Vista and Windows 7: Show or Unhide File Extensions

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Most power users of Windows will want to see file extensions for all files. Here is how to see file extensions when browsing in explorer. This technique works for Vista and Windows 7.

How do I Open or Mount a Bin File Without a Cue File?

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You downloaded a CD image in a bin format. However, nothing will read it. Most software for mounting or burning the bin file requires a cue file and this describes how to create one.

Chrome: Hide images when visiting particular sites

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If you are using a low speed internet connection, loading a website which has many images may take a lot of time. This tutorial will show you how to hide those images when you visit the website on Google Chrome. This will not only help the browser speed up the loading time, but also prevent embarrassing moments from happening when the site contains NSFW images.

IE9: Disable Internet Options

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The Internet Options is the center place for tweaking most of all important settings in Internet Explorer. Because this option can be easily accessed by anyone, problems may arise when an user erases or tweaks the settings of other users. Luckily, you can lock the option by using this registry tweak.

PHP: determine the directory path of the server root

It is sometimes necessary to refer to files in the host filesystem explicitly. By retrieving this information dynamically instead of hard coding it, moving the code from one server or hosting company to another is much simpler.

DNS/BIND resource record: using $GENERATE to make many records

A cool feature in versions of BIND since 8.2 and 9.1 is the $GENERATE directive which can create hundreds or thousands of resource records with a single line in zone file. A common use for $GENERATE is assigning PTR records for a DHCP address range.

DNS/BIND resource record: CNAME, canonical names, host aliases

A single host may have multiple personalities: web server (www), mail server (mail, mx), dns server (ns), ftp server (ftp). Rather than assign each of these names an address (A) record pointing to the same IP address, all of which would need to be changed if the IP address changed, one name can be associated with an address record and the remaining names can be aliases for that name. The CNAME record simplifies DNS management, and who doesn’t want that?

DNS/BIND: set TTL for individual resource records

BIND resource records allow an explict TTL value that will override the zone file’s TTL for that specific resource record. One use for this is to prevent non-authoritative servers from caching these records, perhaps in prelude to changing a server’s IP address.

DNS/BIND resource record: PTR reverse lookup record

The PTR (pointer) record maps an IP address to a hostname and fully qualified domain name. Many applications use reverse lookups to identify the domain from which a TCP/IP connection is formed. Best practice for DNS is to create a PTR record for every A record.