Introduction To Batch File programming
Batch file programming is nothing but the Windows version of Unix Shell Programming. Let's start by understanding what happens when we give a DOS command. DOS is basically a file called command.com It is this file (command.com) which handles all DOS commands that you give at the DOS prompt---such as COPY, DIR, DEL etc. These commands are built in with the Command.com file. (Such commands which are built in are called internal commands.).DOS has something called external commands too such as FORMAT, UNDELETE, BACKUP etc. So whenever we give a DOS command either internal or external, command.com either straightaway executes the command (Internal Commands) or calls an external separate program which executes the command for it and returns the result (External Commands.) So why do I need Batch File Programs? Say you need to execute a set of commands over and over again to perform a routine task like Backing up Important Files,Deleting temporary files(*.tmp, .
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