语法:FOR %%variable IN (set) DO command [command-parameters] 对一组文件中的每一个文件执行某个特定命令。 %%variable 指定一个单一字母可替换的参数。 (set) 指定一个或一组文件。可以使用通配符。 command 指定对每个文件执行的命令。 command-parameters 为特定命令指定参数或命令行开关。 例如一个批处理文...
FOR /参数 %variable IN (set) DO command [command_parameters] %variable:指定一个单一字母可替换的参数,如:%i ,而指定一个变量则用:%%i ,而调用变量时用:%i% ,变量是区分大小写的(%i 不等于 %I)。 批处理每次能处理的变量从%0—%9共10个,其中%0默认给批处理文件名使用,%1默认为使用此批处理时输入...
If used in a batch file,echo onandecho offdon't affect the setting at the command prompt. If there's an empty variable in a batch file while usingecho, it displays "ECHO is off". To prevent seeing this message, and produce a blank line instead, place a colon (:) betweenechoand th...
The command prints the text in the output. However,echooffers additional options regarding formatting the output and working with different parameters. For example, set the parameter$name: $name = "Sara" Next, runechoon the variable: echo $name The output prints the content of the variable. e...
If used in a batch file,echo onandecho offdon't affect the setting at the command prompt. If there's an empty variable in a batch file while usingecho, it displays "ECHO is off". To prevent seeing this message, and produce a blank line instead, place a colon (:) betweenechoand th...
FOR %%variable IN (set) DO command [command-parameters] %%variable 指定一个单一字母可替换的參数。 (set) 指定一个或一组文件。能够使用通配符。 command 指定对每一个文件运行的命令。 command-parameters 为特定命令指定參数或命令行开关。 比如一个批处理文件里有一行: ...
Echo | Microsoft Docs, To display the command prompt again, type echo on. To prevent all commands in a batch file (including the echo off command) from displaying on … How to disable echo in windows console? Question: What is the method to turn off echo in a C application running on...
To display the command prompt, type echo on. If used in a batch file, echo on and echo off don't affect the setting at the command prompt. If there's an empty variable in a batch file while using echo, it displays "ECHO is off". To prevent seeing this message, and produce a ...
In this example,$NAMEis different from$name, soecho $NAMEoutputs nothing. Echo Command Not Found If you’re getting a ‘command not found’ error when trying to useecho, it’s likely that your PATH environment variable is misconfigured. To solve this, you can specify the full path to the...
Thereadcommand waits for the user to type something and pressEnter. Whatever the user types is stored in the variable$name. Theecho "Hello, $name!"command prints a greeting message that includes the$namevariable value. Since we enteredSaraat the prompt, the output isHello, Sara!. ...