dos echo environment variable

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

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

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

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

The computer configured by the company is Win7, the account used is not an administrator account, I set the environment variable in the computer---Properties is invalid.The environment variable was later successfully set in the DOS window.1, set

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,

After you add or modify an environment variable in the environment variable, advanced, properties, my computer, you need to restart the system for it to take effect. Is there any way to make it effective immediately? Here's a way to do this:To

Frequently-used commands echo, @, call, pause, and REM (TIPS: Use: instead of REM) are the most frequently-used commands for batch file processing. We started from them. First, @ is not a command, but a special identifier for DOS batch processing.

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

1. Dynamic Library path settings Linux down with dynamic libraries and windows are not the same. Linux executables rely on the configuration file to read the path, so sometimes you need to set the path to the following export ld_library_path=/home/..