问题描述
我正在尝试编写BAT脚本,并且具有以下内容:
I'm trying to write a BAT script and I have the following:
@echo off REM Comments here SETLOCAL ENABLEDELAYEDEXPANSION set PROG_ROOT=C:\Prog set ONE=1 echo 1>> %PROG_ROOT\test.txt echo %ONE%>> %PROG_ROOT\test.txt for /f "tokens=*" %%f in (folders.txt) do ( echo %%f>> %PROG_ROOT\test.txt ) ENDLOCAL
我的folder.txt包含数字 5。
My folders.txt contains the number "5".
我的test.txt输出是
My test.txt output is
ECHO is off ECHO is off 5
我不明白为什么输出的前两行显示 ECHO已关闭,而第三行则正确打印出来。如何打印正确的输出?
I don't understand why the first 2 lines of output has "ECHO is off", while the third line is printed out correctly. How do I print the correct output?
ETA:我尝试过
ETA: I tried
echo 1>> %PROG_ROOT\test.txt echo %ONE% >> %PROG_ROOT\test.txt
我可以打印
ECHO is off 1
但是,我不需要在数字后打印尾随空格。
However, I need to NOT print the trailing space after the number.
推荐答案
1> (更常见的是 n 用于任何数字 n )被解释为重定向,因此 echo 1>> 在 cmd 中显示为 echo 不带参数。没有参数的 echo 将显示当前的 echo 状态(此处, ECHO已关闭)。
1> (and more generally n> for any digit n) is interpreted as a redirection, and thus echo 1>> appears to cmd as an echo with no arguments. echo with no arguments will print the current echo state (here, ECHO is off).
要修复,请使用 ^ 字符对整数进行转义:
To fix, escape the integer with a ^ character:
echo ^1>> %PROG_ROOT\test.txt
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