windows @echo 在 cmd 中关闭
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@echo off in cmd
提问by Rayne
I'm trying to write a BAT script and I have the following:
我正在尝试编写一个 BAT 脚本，我有以下内容：
@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
My folders.txt contains the number "5".
我的 folders.txt 包含数字“5”。
My test.txt output is
我的 test.txt 输出是
ECHO is off
ECHO is off
5
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?
我不明白为什么输出的前 2 行显示“ECHO is off”，而第三行打印正确。如何打印正确的输出？
ETA: I tried
ETA：我试过了
echo 1>> %PROG_ROOT\test.txt
echo %ONE% >> %PROG_ROOT\test.txt
and I was able to print
我可以打印
ECHO is off
1
However, I need to NOT print the trailing space after the number.
但是，我不需要在数字后打印尾随空格。
采纳答案by nneonneo
1>(and more generally n>for any digit n) is interpreted as a redirection, and thus echo 1>>appears to cmdas an echowith no arguments. echowith no arguments will print the current echostate (here, ECHO is off).
1>（更一般地n>用于任何 digit n）被解释为重定向，因此echo 1>>显示cmd为echo没有参数。echo不带参数将打印当前echo状态（此处为ECHO is off）。
To fix, escape the integer with a ^character:
要修复，请使用^字符转义整数：
echo ^1>> %PROG_ROOT\test.txt
回答by Nguy?n L?i
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
