errorlevel values

Reference: http://hi.baidu.com/lpf2008007/blog/item/a3fa9a3928bcd9f13a87ce8d.html 1. If errorlevel tests the return status of the previous program, if the return status of the program is large or equal to the value described, execute the doscommand

Today, a remote customer, found that his server will be automatically disconnected from the network, causing the client can not connect the service side, but restart the service and return to normal after the initial judgment may be due to a system

They are all judged by the return value of the last command.When using an if ERRORLEVEL value cmmand a sentence, it means that if the error code value returned is greater than or equal to the value, the Cmmand Operation When using an if%errorlevel%

IF-ERRORLEVEL Create TEST4.BAT with the following content:@ ECHO OFFXcopy c: \ AUTOEXEC. bat d :\If errorlevel 1 ECHO file copy failedIf errorlevel 0 ECHO, the file is successfully copied.Then execute the file:C: \> TEST4If the file is successfully

Their function is to judge the return value of the last command.By default, the return value of one command is only 2, 0 indicates success, and 1 indicates failure.But there are exceptions, some command return values will be greater than 2, the

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.

First, Mark symbol:1 CR (0D) command line Terminator2 Escape (1B) ANSI escape character Guide3Space ( -) commonly used parameter specifiers4Tab ( the) ; =non-trivial parameter qualifiers5+Copy command file connector6* ?File wildcard characters7

First, the batch file is a text file, and each line of the file is a DOS command (most of the time, like the command line we execute at the DOS prompt), you can use the DOS edit or Windows Notepad (Notepad) Any text file Editing tool creates and

First, the batch file is a text file, and each line of this file is a DOS command (most of the time it is like the command line we execute at the DOS prompt ), you can use any text file editing tool such as edit in DOS or notepad in Windows 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.