ECHO命令(国外英文资料).doc

ECHO命令(国外英文资料) The ECHO command is a suborder of DOS batch processing commands: As a control batch command, the command line itself is displayed at the execution time Format: ECHO [ON | OFF] Show the current ECHO Settings state Format: ECHO Output prompt information Format: ECHO information content Close the DOS command prompt Type ECHO OFF in the DOS prompt state, and you can turn OFF the display of the DOS prompt and leave the cursor ON the screen until the ECHO ON is typed. The output is empty, which is equivalent to entering a carriage return Format: ECHO. Note that the on the command line should not have a space in the middle of the ECHO, otherwise . will be sent as a prompt message to the screen. The other . / [\] +, etc. In the following example, ECHO. The return of the output, which is turned into an input to the TIME command by the DOS pipeline, is equivalent to a return car after the TIME command is executed. So the execution TIME system will automatically return to the DOS prompt status after displaying the current TIME: C: ECHO. | TIME The ECHO command output empty lines of another application example is: will ECHO. Add in the automatic batch file, make originally the prompt screen, as shown in the bottom of the screen above appear on the screen. Answer the questions in the order Format: ECHO reply to | command file name The FORMAT can be used to simplify the need some man-machine dialogue for the command (such as: CHKDSK/F; FORMAT Drive:; del *. *) operations, it is through the DOS command pipe ECHO command output preset reply language as the man-machine dialogue command input. The following example is the equivalent of entering the Y enter the Y when the command appears to be invoked: C: ECHO Y | CHKDSK/F C: ECHO Y | DEL A: *. * Create new files or add file content Format: the ECHO file contents file name ECHO file contents file name For example: C: ECHO @echo OFF AUTOEXEC. BAT creates automatic batch files C: ECHO C: \ CPAV \ BOOTSAFE AUTOE