BillGates in Twitter
Recently, Microsoft's founder BillGates has joined in the Twitter microblogging/social network. He received 3,40,191 followers in 5 days... (including me 
)
If you want to join, visit the below link
http://twitter.com/BillGates
Popularity: 2% [?]
Google VS China
The new google approach was posted in the google's official blog. Now this become a top discussion in the world. What's really going on google's service in China ?
Visit here : http://googleblog.blogspot.com/2010/01/new-approach-to-china.html
Popularity: 1% [?]
How to login windows 7 without password
1. Go to Run window, type netplwiz.exe
2. It will open the user account window.
3. Uncheck "Users must enter a user name and password to use this computer".
4. Enter the password twice to confirm this action.
5. Now your OS is ready to login without asking the password.
Popularity: 2% [?]
How to delete a Service from Windows
Some time it will be very difficult to remove the service from the service window in Windows OS.
The easy way to remove the service from the service list is,
1. Open command prompt
2. type "sc delete <service name>
3. Restart your computer.
Now the service will be removed from the service list
Popularity: 2% [?]
Unix Commands Part 3
Here I am for the third installment of the Unix commands series...
The list of useful commands being very vast,here I will try to focus on a few related ones.
1) whatis- search the whatis database for complete words
syntax: whatis <command-name>
example: whatis find
This is a sort of minimal manual page. Prints a small description that is stored in the whatis database,corresponding to each command. Note: The command name must be an exact match
2) apropos- it does something similar to whatis,but searches many more databases and that too based on keywords,not exact matches
It might be useful if you don't exactly remember a command's name.
example: apropos wget
3) uname
This is used to display details of the current system,kernel,logged in user and time.
It has many switches to choose all of these or only few.
example: uname -r gives the kernel information
4) whoami
The command speaks for itself. It just prints current logged in user name.
5) which -shows the full path of (shell) commands
syntax: which <command-name>
This is again similar to whatis,but instead of printing descriptions,it will give the paths of the required command if it exists. This man page is generated from the file which.texinfo. Note: It only searches in the paths in $PATH variable of the enviroment
6) write -send a message to another user
This is a useful tool if you are in a network of linux systems. You can chat via the terminal.(No blocking or stuff like that 
) We used to do this in college during labs.
syntax: write user [ttyname]
You can append the IP address to user name so as to communicate with users logged into other systems(user@ip)
7)cat - concatenate files and print on the standard output
This is used for viewing or concatenating files. Very useful for a quick glance of a file's contents. But it is recommended no to use cat for redirecting contents to any other commands. Its not an efficient manner to do it.
I guess I will stop it here for now.. adios
Popularity: 1% [?]
Awk script for disk info
This is a simple and very small script!
Create a file named space ( in my case)
#/bin/bash
df -H|awk 'BEGIN{i=0;j=0} $1~/\/dev/ \
{if($4~/M$/){i=i+($4/1000)}else{i=i+$4};j=j+$2} \
END{print"Free space:"i" GB";print"Total Space:"j" GB";print"Percentage Free:"i/j*100"%"}'
Save it,and make it executable by doing
chmod +x space
and additionally put it in one of the bash environment paths. I put it into /usr/bin
Then you can call this tool from anywhere using just the name "space"
It is self explaining enough.
Sample output is:
vivek@vivek-desktop:~$ space
Free space:31.6 GB
Total Space:252 GB
Percentage Free:12.5397%
That's all. It relies on basic shell operations like piping and the use of awk language for filtering fields in the text.
Ciao
Popularity: 2% [?]
Unix Commands Part 2
Hi everyone, here is my addition
df - Show disk usage of mounted partitions (Very useful while managing disks)
A variation df -H gives in human readable(i.e more readable) format
ps - Lists details of all running processes
This one alone has lots of switches/options to explore. Do a man ps for detailed information
head - To get the first few(by default 10) lines of file passed as argument
Very useful if you want to read only the start of a large file(log files/manuals etc)
tail - To get the last few(by default 10) lines of file passed as argument
Utility same as head,but used more for checking logs with -f option for realtime updating
top - Displays system memory,cpu usage and significant processes running in realtime
Useful for monitoring changes in system for testing/diagnostic purposes
nc - Netcat(now I am not sure if its builtin bash tool or not)
This is called the TCP/IP swiss army knife. Can be used for a variety of network operations ranging from simple file/byte transfers to hacking. Has a huge number of options to explore for the enthusiastic hackers out there
touch - A simple command to create files on the fly
It creates new files with null data if filename already doesn't exist. If it does,it is used to update the access times of files( many a time to adjust things 
)
apt-get moo- Time to have some fun
Its an easter egg in debian based distros( I have tested it in debian and ubuntu). If you have apt installed in your distro,please try this and its funny continuations of
apt-get -v moo
apt-get -vv moo
apt-get -vvv moo
apt-get -vvvv moo
apt-get -vvvvv moo
aptitude-vvvvvv moo
Too much eh? The developers were out for some fun i guess....
I guess I will keep it short for now and come up with a selection of interesting commands later on..adios
Popularity: 1% [?]
Unix Commands Part 1
ls - List the directories and files in it
mkdir - Make a Directory
cd - Change Current Directory
ftp - Connect to a Remote Machine (FTP Site)
mkdir - Make Directory
Popularity: 2% [?]
About OPC
OPC is a widely accepted industrial communication standard that enables the exchange of data between multi-vendor devices and control applications without any proprietary restrictions. An OPC server can communicate data continuously among PLCs on the shop floor, RTUs in the field, HMI stations, and software applications on desktop PCs. Even when the hardware and software are from different vendors, OPC compliance makes continuous real-time communication possible.
Popularity: 2% [?]
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