All Tech Viewer: February 2015

Batch files are used to store DOS commands. Once you run the batch file by double clicking on the file or via any other method such as using command prompt, all the DOS commands are executed sequentially. Normally batch files are mostly used to automate repetitive tasks. You can save your time by automating repetitive tasks. This method is very useful for developers more than normal computer users.

Creating a batch file is not a complex task. You need to know only the DOS commands that you are going to put into the batch file and the order of the commands.

Here you can see few of commonly used DOS commands.

TITLE : Window name when bat file executes.

PAUSE : Pause the execution of the bat file and wait until user press any key to continue

CLS : Clear the DOS window

MKDIR : Create a directory

DIR : Move into a directory ( “DIR directory_path”) or view current directory (“DIR”)

START : Execute a file using default application

ECHO : Print something on the command prompt window

ECHO OFF : Prevent showing the batch file commands on the command prompt

You can find a list of DOS commands by typing HELP in command prompt

Let’s create few batch files.

After understood basics you can create complex batch files by adding various commands. First you need to create a file with .bat extension or .cmd extension.

Open notepad --> click save --> select all files --> name it as test.bat or test.cmd --> save

Now you can insert below DOS commands into your file and test them.

1. A program to create a directory

MKDIR Hello_World

MKDIR “Hello World”

Insert above commands into your test.cmd/test.bat file and save. Then execute these commands by double clicking the on the file. Keep in mind to put double quotation marks if you use spaces in a name.

Above commands will create two folders called Hello_world and Hello World in the same directory where your batch file exists.

2. Create a text file with a text string

MKDIR “text folder”

CD "text folder"

ECHO "This is the text string" > textFile.txt

This DOS command will create a folder named text folder and create a file named textFile.txt and write a text string into the file.

You can understand the basics of creating a batch file using above examples. Once you got the basics you can create very complex files to automate a process.

Click here to read more on this topic.

You might be programming with html and may be thinking how to create your own html tags to use in html code. This is a very easy task. First you need to define a name for your tag. You should be careful not to use any html reserved words. Assume you have named your tag name as mytag. Use it in the html code as a normal tag.(write opening tag and closing tag)

<mytag>

</mytag>

Now you need to provide attributes for the tag that you have defined. You can add these attributes using CSS.

<style type="text/css">
     mytag{
            background-color: lawngreen;
            padding : 10px;
            font-style : italic; 
          }
</style>

Now you can use your tag as a normal html tag and use it in your html code.
Complete code :

<!DOCTYPE html>
<html>
    <head>
         <style type="text/css">
             mytag{
                 background-color: lawngreen;
                 padding: 10px;
                 font-style: italic;
                  }
         </style>
    </head>
    <body>
        <mytag>
            hello world
        </mytag>
    </body>
</html>

All Tech Viewer

Sunday, February 22, 2015

How To Create A Windows Batch File

Let’s create few batch files.

Sunday, February 1, 2015

Create Your Own HTML Tags

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