Notes by woolf
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Created by woolf on July 31, 2011 12:30:20
Last update: July 31, 2011 12:30:20
The DNS (Domain Name System) server uses port 53 (UDP and TCP). From Wikipedia :
DNS primarily uses User Datagram Protocol (UDP) on port number 53 to serve requests. DNS queries consist of a single UDP request from the client followed by a single UDP reply from the server. The Transmission Control Protocol (TCP) is used when the response data size exceeds 512 bytes, or for tasks such as zone transfers. Some operating systems, such as HP-UX, are known to have resolver implementations that use TCP for all queries, even when UDP would suffice.
Created by woolf on February 10, 2011 12:51:14
Last update: February 10, 2011 13:06:11
Windows command line shell does not come with a sleep command. One trick is to emulate sleep using the ping command:
C:\>ping /?
Usage: ping [-t] [-a] [-n count...
To sleep for about 5 seconds:
@rem make sure to ping a non-existing IP, otherwis...
If you have the Windows Resource Kit installed, it does provide a sleep command:
C:\>sleep
Usage: sleep time-to-sleep-in-s...
Created by woolf on October 22, 2010 03:24:32
Last update: October 22, 2010 03:25:14
ProductivityPortfolio has an excellent explanation about Hibernate and Standby . To restate the key points: Standby Enters low power mode by cutting off items such as hard drive and monitor Computer is still running Data is stored in RAM for quick recovery You may lose data when power runs out Hibernate Computer is shutdown and is no longer consuming power Data is saved to hard disk Wake up is not as fast as from Standby, but may be faster than Power On. Additional Notes: Check the Power Options applet in the control panel to see if you can turn on Hibernate (in the following screenshot, Hibernate cannot be enabled since there's not enough disk space). To bring up the Hibernate option when shutting down, hold...
Created by woolf on October 22, 2010 03:00:32
Last update: October 22, 2010 03:00:54
You can configure Windows XP such that when you press the "Power" button it goes to standby instead of showdown:
From Start menu, bring up the Control Panel
Double click the Power Options icon:
In the Advanced tab, select "Stand by" for the option "When I press the power button on my computer".
Created by woolf on March 14, 2009 23:25:18
Last update: March 15, 2009 01:18:03
One of the first things you notice about Windows Vista is the annoying User Account Control (UAC) popup. It keeps nagging you to click a confirmation button whenever you try to install or reconfigure something. With UAC, you are working with normal user privileges even though you may be logged in with an administrator account. When the application requires administrator privileges, the UAC prompt pops up to ask for your confirmation. UAC compatible applications are packed with an application manifest to tell Vista that they need elevated privileges . For legacy applications needing elevated privileges , you can check " Run this program as an administrator " on the Compatibility tab of file properties dialog. Application manifest itself is not new to Windows Vista. In...
