dos set variable

The environment is the variable storage area of the DOS system. It is stored in Ram and is the place where the DOS system stores important information for batch processing files. You can modify or modify the information as needed. Many dos reference

Early computer systems usually consist of central processing units (CPUs), memory, peripherals, and so on, and users often monopolize all of the computer's resources. For example, when a computer prints through a printer, other devices are waiting,

As dos, it should be said that it is the only way for new users to go without talking about network security or system operations. Recently, a friend strongly urged me to write a DOS tutorial. If you want to write a DOS tutorial, you have nothing

Because of the popularity and application of computer increasingly in-depth, in order to meet the needs of people, the computer's function with its development has become more and more powerful, more and more hardware equipment, such as from the

With the popularization and application of computers, computer functions become more and more powerful and hardware devices become more and more powerful to meet people's needs, such as ISA, PCI sound card, modem, USB hard drive, mouse, and so on,

One, what is deferred environment variable extension? Delay variable Full name "Delay environment variable extension", to understand this thing, we have to understand what is called variable expansion!When we explain our command, CMD will first

DOS Base Command CD Change current directory sys make DOS system disk Copy copy file del Delete file deltree delete directory tree dir column file name diskcopy disk Edit Text Edit Format formatted disk MD to establish subdirectories Mem View

Config. sys is an important file in the dossystem. Its Configuration directly affects the usage and efficiency of the system. If improperly configured, many programs may fail to run normally. Therefore, it is necessary and important to correctly

Typical advanced DOS batch processing applications: Windows Programming Files with the extension BAT (or CMD in NT/2000/XP/2003) are batch files. First, the batch processing file is a text file. Each line of this file is a DOS command (most of the

Interactive interface Design Nothing to say, look at the Master Design Menu interface bar: @echo off CLS title Ultimate Multipurpose Repair : Menu cls color 0A echo. echo ============================== echo Please select the