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Linux and Unix wall command help and examples

Fri, 24 May 2013 15:23:38 MST

Wall sends a message to everybody logged in with their mesg permission set to yes. The message can be given as an argument to wall, or it can be sent to wall's standard input. When using the standard input from a terminal, the message should be terminated with the EOF key (usually Control-D).

What is wall?

Fri, 24 May 2013 15:23:38 MST

When talking about Facebook, the Wall is your own personal page that is visible to all your friends and displays all your life events, likes, news, and posts that you and your friends have made to the wall. In December 2011 Facebook replaced the Facebook Wall with the Facebook Timeline, which shares all the features of the Wall, but had a new layout and a full timeline of your life.

What is the /? switch?

Fri, 24 May 2013 15:23:38 MST

When used with a MS-DOS or Windows command line command, the /? is a command switch that gives additional help about any of the available commands.

What is font size?

Fri, 24 May 2013 15:23:38 MST

The font size is the overall size (generally height) of a font shown on a screen or printed on a page. A font is typically measured in a point (pt) size, which is the vertical measurement of the lettering. There are approximately 72 (72.272) points in one inch or 2.54 cm. In the example below are four different examples of different point sizes.

Replace Windows Explorer with Multi Commander

Fri, 24 May 2013 15:23:38 MST

Microsoft Windows Explorer is great for general file management tasks. However, there are several more complicated tasks that Windows Explorer is unable to handle. This is where Multi Commander can come in handy. Multi Commander is a fantastic and free file manager that allows you to manage your files and perform many tasks not possible through Windows Explorer. In the below picture, is an example of the Multi Commander interface. As can be seen, the interface is very similar to Windows Explorer with additional features such as multiple panes, tabs, and buttons

What is name?

Fri, 24 May 2013 15:23:38 MST

With hardware, a name refers to a description of a device. For example, your computer has a computer name that identifies it on a computer network. A name in this context should not be confused with a MAC, which is a physical addresses or an IP, which is an address.

Does Microsoft call about computer being infected with virus?

Fri, 24 May 2013 15:23:38 MST

No. Microsoft, Dell, HP, Norton, Facebook, or any other computer company will not call you regarding your computer being infected with a virus or having errors. This is a common tactic used by scammers to con you out of money for false fixes or security programs your computer does not need.

How do I test a virus scanner?

Fri, 24 May 2013 15:23:38 MST

Obviously no one wants to infect their computer just to make sure their anti-virus scanner is properly working. Following the below steps will create an EICAR test virus that will help identify if the anti-virus program you have installed is properly working and that it will prompt you for deletion when detected.

How do I disable the Windows loading splash screen?

Fri, 24 May 2013 15:23:38 MST

To disable the Windows splash screen that shows the process of Windows loading as it is starting follow the below steps.

How do I update my Internet browser?

Fri, 24 May 2013 15:23:38 MST

Keeping your Internet browser up to date is very important because of all the potential security vulnerabilities that may exist with older versions and to make sure your browser properly supports all web pages. This document covers all the steps required in keeping your browser up to date.

What is Catfish?

Fri, 24 May 2013 15:23:38 MST

A catfish is a person who creates a fake online profile with the intention of deceiving someone else. For example, a woman could create a fake profile on an online dating website, create a relationship with one or more people and then create a fake scenario where they are in need and ask all their fake relationships for money. Another example is someone who creates a fake Facebook account that resembles a friend so that they can view that persons private information.

MS-DOS and Windows command line bootsect command help

Fri, 24 May 2013 15:23:38 MST

Bootsect updates the master boot code for hard disk partitions in order to switch between BOOTMGR and NTLDR. You can use this tool to restore the boot sector on your computer and it can be used for FAT and NTFS based file systems, replacing the FixFAT and FixNTFS tools.

Can a 24-pin connector work with a 20-pin power connector?

Fri, 24 May 2013 15:23:38 MST

Almost all of the new power supplies used today feature a 24-pin power connector to connect to a computer motherboard. However, some motherboards still feature a 20-pin ATX power connection.

What is a bitcoin?

Fri, 24 May 2013 15:23:38 MST

A Bitcoin (BTC) is a digital currency, used on the Internet for various services. This currency utilizes an open-source, peer-to-peer internet protocol for tracking of transactions involving bitcoin transfers. Web sites and applications can send and receive bitcoins through the use of wallets, using ECDSA digital signatures to verify the transactions. The bitcoin is not a standard currency, meaning it has no central bank to manage it, like a standard currency does (i.e. the Federal Reserve for U.S. currency). For this reason, the equivalent dollar value can fluctuate greatly, resulting in criticism that it is not suited for use in the worldwide economy.

What is GPT (GUID Partition Table)?

Fri, 24 May 2013 15:23:38 MST

Short for GUID Partition Table, GPT is a part of the EFI standard that defines the layout of the partition table on a hard drive. GPT is meant as a replacement to hard drives using a MBR partition table, which have a 2.20TB size limitation and extends upon UEFI. Using GPT a drive could support between 8 and 9.4 ZB depending on the sector size.

Quickly change case of text in Microsoft Word.

Fri, 24 May 2013 15:23:38 MST

Highlight any text in Microsoft Word and press the shortcut key Shift + F3 to change the case of the highlighted text. Pressing this key once will uppercase all highlighted text, pressing the shortcut again will make the text all lowercase, and then pressing the shortcut again will give the text proper case. Use the online converter to convert your text to uppercase, lowercase, and many other modifications.

What is A20?

Fri, 24 May 2013 15:23:38 MST

A20 is the 21st memory address line on 80286 and later processors that allow real-mode software to gain access to high memory or area of memory beyond the first megabyte. With MS-DOS and early versions of Windows this technique of accessing the high memory area was done by using an A20 handler. For example, a user could load the himem.sys in the config.sys file and use the DOS=HIGH,UMB line.

What is IA-32 (Intel Architecture 32)?

Fri, 24 May 2013 15:23:38 MST

Short for Intel Architecture 32, IA-32 is a 32-bit processor architecture developed by Intel that moves computer processors from the 16-bit architecture of the early 286 computers to the 386 and later processors. This architecture was later replaced by IA-64.

What is ICMP (Internet Control Message Protocol)?

Fri, 24 May 2013 15:23:38 MST

Short for Intel Comparative Microprocessor Performance, iCOMP is an overall rating that originally combined five benchmarks: CPUmark32, Norton SI-32, SPECint_base95, SPECfp_base95, and the Intel Media Benchmark that was released in 1992. iCOMP gives a user a better overall rating and comparison of computer processors.

Easily fix spots and other problems in photos.

Fri, 24 May 2013 15:23:38 MST

Expensive programs such as Adobe Photoshop have a feature known as Content-Aware, which allows them to fix spots and other problems in a photo with little work. The free online service Webinpaint has the same capability and allows you to easily remove spots, blemishes, scratches, objects, and any other problems you may have in a picture. For example, in the below picture I start off with an image with four big air balloons and one small air balloon in the middle. I think the image would look better without this small balloon, so I draw over the balloon and then click the Inpaint button to remove the small balloon from the picture.