Month: February 2008

Recommended Food To Get Rid Of Common Acne

A recommended list of food rich in zinc and vitamin C to fight with common acne.

Acne is an infection of the skin, caused by changes in the sebaceous glands. The most common form of acne is called acne vulgaris, which means common acne. The redness comes from the inflammation of the skin in response to the infection. Bad acne often leads to bad scars where the skin has the shape of a volcano. It is difficult and expensive to treat acne scars.

A mix of commercial and homemade treatments including diet can help with acne for various reasons. Try the following:

  1. Cut down sweets, salted snacks, sugar, chocolates
  2. Eat zinc rich food such as shellfish, nuts, spinach (boiled) Lamb loin (roasted), green peas (boiled), yogurt low-fat, Crimini mushrooms, raw etc.
  3. Eat fresh fruits and vegetables rich in vitamin C

Who Invented First Hard Disk (HDD)

Information about computer hard disk and interesting facts – Find out who invented first hard disk.

Who invented Hard disk?
Fig.01: A typical IDE Hard disk (photo credit wikipedia)

A hard disk (also known as HD or HDD) drive is common data storage for computers. Hard disks use magnets to store information. So who invented hard disk?

The hard disk was invented on September 13, 1956 by IBM team led by Rey Johnson (considered as “father” of the disk drive). Earlier hard disk drives were large and cumbersome devices. A 5 or 20 megabyte hard disk capacity was considered large in early 70 and 80’s.

There are several different types of interface for hard drives. The most common is the IDE or SATA interface, which is found on most home desktop PC’s.

For high-end applications and business the SCSI or SAS interface is very popular. Again, there are several types of SCSI interface. In order to safeguard against data loss or corruption and to improve performance you need to use RAID (there are many different configurations to choose from).

Did you know?

  • 1980 – The world’s first gigabyte-capacity disk drive, the IBM 3380, was the size of a refrigerator, weighed 550 pounds (250 kg), and had a price tag of US $40,000.
  • 1991 – 100 (2.5-inch) megabyte hard drive introduced.
  • 2005 – First 500 GB hard drive started shipping
  • 2008 – Seagate announced the first 1.5 terabyte hard drive

Cisco Router Display Current Date and Time

You can execute the following command to see the date and time on a Cisco router (this is a Unix-like date command on a Cisco device).

Task: Display the system clock

Use the show clock command in EXEC mode, enter:
show clock
OR
show clock detail
The last example will show the clock source (such as NTP) and the current summer time setting etc.

Task: Set the system clock

To set the time use the following 24 hour time format:
clock set 20:30:13 July 2009
The syntax is as follows:

clock set hh:mm:ss day month year

OR

clock set hh:mm:ss month day year

Recover a Non-Booting Windows System After Loading Device Drivers or Software

Explains how to recover a non-booting Windows System after loading device drivers or software.

This may happen and and Windows may not boot after installing a device driver or new software. However, you can easily recover a non-booting Windows system after you have changed the device drivers or new software

Each Windows has boot option called “Last Known Good Configuration”, which is available during reboot. So all you have to do is follow these steps:

  • Reboot your computer.
    During the boot process, hit F8 function key until you see the boot menu
  • Select the “Last Known Good” menu option item.
  • Press [Enter] key to boot into system

Please remember that using this option will remove any changes to your device drivers and may cause problems with software installation. Now, simply remove driver or software that was causing this issue and reboot the system again.

Cisco Router: See Amount of Packets Processed By the Gig-E Interface

How Can I See the Amount of Packets Processed By the Gig-E Interface on My Cisco Router?

So how do you see the amount of packets processed by the Gig-E Interface on Cisco Router?

Simply use the following command. Login using telnet and type the command:
sh counters interface GigabitEthernet 1/1

Cisco Router: See Current List of Advertised BGP Routes

How Do I See the Current List of Advertised BGP Routes on a Cisco router?

So how do you see the current list of advertised BGP routes on a Cisco router?

Simply, login using telnet and execute the following command:

sh bgp

It will show you paged output of all bgp routes.