dos veces

Reading a text in DOS usually required the path and file name of the text file to be read. In batch processing, you can use a batch script file to read a file with a specified number of lines. For example, if you want to read a text file named "filetxe" and read a specified number of lines from it, you can use the following code: ``` @echo off REM stores the file path and line count in a variable set file_path=C:\Users\user\Documents\filetxt set line_count=10 REM reads the file and prints the number of lines Echo reads line number:$line_count echo REM prints the lines to the console. echo %file_path% : %line_count% lines goto end ``` In this code, the file path and the number of lines are stored in a variable and then the "echo" command is used to output the number of lines. Then, he used the "goto" command to jump the code block to the "end" tag, indicating that he had finished reading the text file with the specified number of lines. It should be noted that the value of the variable in the batch script file is executed immediately, so the "echo %file_path% : %line_count% line" command will immediately output the number of lines read. If you want to wait for the script to finish executing before you can output the number of lines, you can use the "for" command to loop through the file and use the "echo" command to output the number of lines. For example: ``` for /r %file_path% %line_count% do echo %file_path% : %line_count% line ``` This code uses the "for" command to read the specified number of lines from the specified file path and uses the "echo" command to output the number of lines.

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