ABOUT LANGUAGE C
What is C:
C is a programming language developed at AT & T’s Bell
Laboratories of USA in 1972. It was designed and written by a
man named Dennis Ritchie. In the late seventies C began to
replace the more familiar languages of that time like PL/I,
ALGOL, etc. No one pushed C. It wasn’t made the ‘official’ Bell
Labs language. Thus, without any advertisement C’s reputation
spread and its pool of users grew. Ritchie seems to have been
rather surprised that so many programmers preferred C to older
languages like FORTRAN or PL/I, or the newer ones like Pascal
and APL. But, that's what happened.
Possibly why C seems so popular is because it is reliable, simple
and easy to use. Moreover, in an industry where newer languages,
tools and technologies emerge and vanish day in and day out, a
language that has survived for more than 3 decades has to be really
good.
C is a programming language developed at AT & T’s Bell
Laboratories of USA in 1972. It was designed and written by a
man named Dennis Ritchie. In the late seventies C began to
replace the more familiar languages of that time like PL/I,
ALGOL, etc. No one pushed C. It wasn’t made the ‘official’ Bell
Labs language. Thus, without any advertisement C’s reputation
spread and its pool of users grew. Ritchie seems to have been
rather surprised that so many programmers preferred C to older
languages like FORTRAN or PL/I, or the newer ones like Pascal
and APL. But, that's what happened.
Possibly why C seems so popular is because it is reliable, simple
and easy to use. Moreover, in an industry where newer languages,
tools and technologies emerge and vanish day in and day out, a
language that has survived for more than 3 decades has to be really
good.
Top IT skills wanted for 2012
A new Computerworld survey indicates the nine IT skills that will be in demand in 2012.
Nearly 29 percent of the 353 IT executives who were polled in Computerworld’s annual Forecast survey said they plan to increase IT staffing through next summer. (That’s up from 23% in the 2010 survey and 20% in the 2009 survey.)
Here are the skills that the IT executives say they will be hiring for:
- Programming and Application Development–61% plan to hire for this skill in the next 12 months, up from 44% in the 2010 survey. This covers the gamut from website development to upgrading internal systems and meeting the needs of mobile users.
- Project Management (but with a twist)– The twist is that they’re not going to just be looking for people who can oversee and monitor projects. They also want people who can identify users’ needs and translate them for the IT staffers-the increasingly popular business analysts.
- Help Desk/Technical Support–Mobile operating systems have added a new dimension to help desk and tech support.
- Networking-This demand is being fueled partially by virtualization and cloud computing projects. The survey also revealed that execs will be looking for people with VMware and Citrix experience.
- Business Intelligence-Computerworld interprets this uptick to a focus shift in many companies, from cost savings to investing in technology. That will be nice if it pans out that way.
- Data Center-Virtualization and the Cloud could also be behind the increased need for IT professionals with backgrounds in data center operations and systems integration.
- Web 2.0-Tech skills centered around social media will be in demand, with .Net, AJAX and PHP as key back-end skills, with HTML, XML, CSS, Flash and Javascript, among others, on the front end.
- Security-Although down from 32 percent in the 2010 survey, security stays a top concern of IT executives.
- Telecommunications-The survey indicates a demand for people with IP telephony skills, and for those familiar with Cisco IPCC call center systems.
Adding messages to Windows 7's logon screen
If you are responsible for managing Windows 7 systems that are open to the public or have multiple user accounts, you may want to add a warning message to the logon screen. You may also want to display logon statistics on the logon screen. Fortunately, doing so is easily accomplished by tweaking a couple of existing registry settings and adding a new setting.
In this edition of the Windows Desktop Report, I’ll show you how to delve into Windows 7’s registry to make the appropriate changes.
Editing the registry
It is important to keep in mind that the registry is vital to the operating system and changing it can be dangerous if you inadvertently make a mistake. As such, you should take a few moments to back up your system by creating a Restore Point as well as by creating a system image in the Backup and Restore tool. That way if anything goes awry, you can restore your system and get right back to work.
To launch the Registry Editor, click the Start button, type Regedit in the Start Search box, and press [Enter]. When the UAC dialog box appears, respond appropriately.
Getting started
Once the Registry Editor launches, locate the following key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
From this key, shown in Figure A, you’ll be able to make all the following changes to the Logon screen.
Figure A
From this key, you’ll be able to make all the necessary changes to the Logon screen.
The warning message
The warning message that you’ll add to the Windows 7’s logon screen is actually made up of two parts: the title and the message text.
To add a title to the warning message, locate and double-click the legalnoticecaption value. When the Edit DWORD dialog box appears, type the title in the Value data text box, as shown in Figure B, and click OK. As you can see, for my example I chose to use a Welcome message, but you can essentially type anything that you want for your title. You can use up to 80 characters, including spaces, for the title.
Figure B
The legalnoticecaption value allows you to specify a title for your warning message.
To add the warning message, locate and double-click the legalnoticetext value. When the Edit DWORD dialog box appears, type the warning message in the Value data text box, as shown inFigure C, and click OK. As you can see, for my example, I chose to remind users of the rules in the lab. Again, you can essentially type anything that you want for your message text. You can use up to 16,383 characters, including spaces, for the message text. However, I have never needed to use that many characters for my messages.
Figure C
You can type a lot of text into the legalnoticetext value.
Tracking logons
If you want to be able to keep track of logons that were made on your system, you can configure the Logon screen to display logon statistics. Right-click anywhere inside the System key and select New| DWORD (32-bit) Value. When the new value appears, type DisplayLastLogonInfo and press Enter twice. When the Edit DWORD dialog box appears, simply type a 1 in the Value Data text box, as shown in Figure D, and click OK.
Figure D
If you want to be able to keep track of logons that were made on your system, set theDisplayLastLogonInfo value to 1.
The new logon display
Now when you restart your system and access the logon screen, you’ll see the warning message, as shown in Figure E. Just click OK and you’ll see your user icon and be able to continue with the logon operation.
Figure E
The warning message will appear on top of the logon screen.
When you select your user icon on the logon screen and type your password, you’ll see the logon statistics, as shown in Figure F. Just click OK to complete the logon operation, and you will immediately see the desktop as you normally would.
Figure F
After you click your user icon, you’ll see the logon statistics on the logon screen.
Running Multiple Instances of Google Talk
Users of Google Talk (GTalk) can also let GTalk go to polygamy, that\92s running multiple instances of Google Talk and login to multiple Google accounts on Google Talk. The polygamy trick can be done without any crack, patch or hack, with just a simple command line parameter or switch /nomutex appended to the Google Talk shortcut.
Ability to polygamy running multiple Google Talk is useful if users have multiple Google Talk accounts (or Google or Gmail accounts that used to login to GTalk) or multiple profiles or personalities, and don\92t want to log on and off from one account to another account every time when want to switch, or want to log in to all accounts at the same time on the same computer.
You can add the /nomutex switch or parameter to existing Google Talk shortcut, or create a new shortcut with the /nomutex command line parameter.
To edit existing Google Talk shortcut:
1) Right click on the Google Talk shortcut.
2) On the right click contextual menu, click on Properties.
3) Go to Shortcut tab on Google Talk Properties window.
4) On the Target textbox, add in the /nomutex to the end of the line so that it looks like below (or you can simply copy and paste the below syntax and replace the original).
Target: "C:\Program Files\Google\Google Talk\googletalk.exe" /nomutex
5) Click on OK.
To create a new shortcut for Google Talk:
1) Right-click on the desktop or anywhere you want to place the GTalk shortcut.
2) Select New on the right click context menu.
3) Then select Shortcut.
4) Copy and paste the following line to the text box when prompted to type the location of the item:
\93C:\Program Files\Google\Google Talk\googletalk.exe\94 /nomutex
5) Click on Next.
6) Give the shortcut a proper name such as Google Talk or Google Talk Multiple or Google Talk Polygamy.
7) Click OK until you are done.
If you have hex editor, you can act like a hacker and modify the bits in Google Talk program so that it will always allow multiple instances of GTalk to be launched whether the /nomutex switch is specified or not.
Launch hex editor and open googletalk.exe, then search for the following patterns in the hex editor:
004536FD . 3BC6 CMP EAX,ESI
004536FF . 75 05 JNZ SHORT googleta.00453706
Modify the string to look like the following:
004536FD . 8BC1 MOV EAX,ECX
004536FF . EB 05 JMP SHORT googleta.00453706
How this Works?
The mutex is short for mutual exclusion object.
A mutex is a program object that allows multiple program threads to share the same resource, but not simultaneously.
So, in the hack above, we used nomutex (no-mutex) to use the same resources simultaneously....!
Ability to polygamy running multiple Google Talk is useful if users have multiple Google Talk accounts (or Google or Gmail accounts that used to login to GTalk) or multiple profiles or personalities, and don\92t want to log on and off from one account to another account every time when want to switch, or want to log in to all accounts at the same time on the same computer.
You can add the /nomutex switch or parameter to existing Google Talk shortcut, or create a new shortcut with the /nomutex command line parameter.
To edit existing Google Talk shortcut:
1) Right click on the Google Talk shortcut.
2) On the right click contextual menu, click on Properties.
3) Go to Shortcut tab on Google Talk Properties window.
4) On the Target textbox, add in the /nomutex to the end of the line so that it looks like below (or you can simply copy and paste the below syntax and replace the original).
Target: "C:\Program Files\Google\Google Talk\googletalk.exe" /nomutex
5) Click on OK.
To create a new shortcut for Google Talk:
1) Right-click on the desktop or anywhere you want to place the GTalk shortcut.
2) Select New on the right click context menu.
3) Then select Shortcut.
4) Copy and paste the following line to the text box when prompted to type the location of the item:
\93C:\Program Files\Google\Google Talk\googletalk.exe\94 /nomutex
5) Click on Next.
6) Give the shortcut a proper name such as Google Talk or Google Talk Multiple or Google Talk Polygamy.
7) Click OK until you are done.
If you have hex editor, you can act like a hacker and modify the bits in Google Talk program so that it will always allow multiple instances of GTalk to be launched whether the /nomutex switch is specified or not.
Launch hex editor and open googletalk.exe, then search for the following patterns in the hex editor:
004536FD . 3BC6 CMP EAX,ESI
004536FF . 75 05 JNZ SHORT googleta.00453706
Modify the string to look like the following:
004536FD . 8BC1 MOV EAX,ECX
004536FF . EB 05 JMP SHORT googleta.00453706
How this Works?
The mutex is short for mutual exclusion object.
A mutex is a program object that allows multiple program threads to share the same resource, but not simultaneously.
So, in the hack above, we used nomutex (no-mutex) to use the same resources simultaneously....!
Chat with Friends through ms dos Command Prompt
1) All you need is your friend's IP Address and your Command Prompt.
2) Open Notepad and write this code as it is.....!
3) Now save this as "Messenger.Bat".
4) Open Command Prompt.
5) Drag this file (.bat file) over to Command Prompt and press Enter.
6) You would then see something like this:
7) Now, type the IP Address of the computer you want to contact and press enter
You will see something like this:
8) Now all you need to do is type your message and press Enter.
Start Chatting.......!
2) Open Notepad and write this code as it is.....!
@echo off
:A
Cls
echo MESSENGER
set /p n=User:
set /p m=Message:
net send %n% %m%
Pause
Goto A
:A
Cls
echo MESSENGER
set /p n=User:
set /p m=Message:
net send %n% %m%
Pause
Goto A
3) Now save this as "Messenger.Bat".
4) Open Command Prompt.
5) Drag this file (.bat file) over to Command Prompt and press Enter.
6) You would then see something like this:
7) Now, type the IP Address of the computer you want to contact and press enter
You will see something like this:
8) Now all you need to do is type your message and press Enter.
Start Chatting.......!
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