批次中的每个字符串后空间输出

Question

嘿，我现在有这个代码把不同的文本不同的文本文件到变量，然后输出到一个文件：

@echo off 
echo system starting.. 
cls 
echo grabbing versions 
cd C:\Scripts\Bamboo 
FOR /F "tokens=1 delims==" %%n IN (CurrentBuild.txt) DO SET build-version-number=%%n 
cd C:\Users\Administrator\bamboo-home\xml-data\build-dir\MC-CC-MAIN 
FOR /F "tokens=1 delims==" %%n IN (MinecraftVersion.txt) DO SET minecraft-version-number=%%n 
FOR /F "tokens=1 delims==" %%n IN (ForgeVersion.txt) DO SET forge-version-number=%%n 
FOR /F "tokens=1 delims==" %%n IN (ModVersion.txt) DO SET mod-version-number=%%n 
cls 
echo setting versions to variables 
set mod-version=mod_version = %mod-version-number% 
set forge-version=forge_version = %forge-version-number% 
set build-version=build_version = %build-version-number% 
set minecraft-version=minecraft_version = %minecraft-version-number% 
cls 
echo outputing variables to build.properties 
del build.properties 
@echo %minecraft-version% >> build.properties 
@echo %forge-version% >> build.properties 
@echo %mod-version% >> build.properties 
@echo %build-version% >> build.properties 
cls 
echo done, exiting inject script 
exit 

但输出具有各一个空格（whitline） ：

"minecraft_version = 1.7.10 " 
"forge_version = 10.13.2.1291 " 
"mod_version = v1.0 " 
"build_version = 33 " 

不知道为什么会发生这种情况。

Answer 1

它是位于>或>>重定向器之前的空格。删除它如下（在dbenham's benefitting comment方面编辑）：

(@echo %minecraft-version%)>> build.properties 

或

>> build.properties (@echo %minecraft-version%) 

说明：如果变量%minecraft-version%结束与

• @echo %minecraft-version%>> build.properties可以打破输出单个数字前有一个空格;
• >> build.properties @echo %minecraft-version%不足，因为该行可能包含不需要的（遗忘的）尾随空间。

此外，保持完全控制在开头和结尾的变量名和值的空间，可以使用双引号set命令如下：

set "variable=value" 

想到了别人：

set "variable= this value contains a leading space" 
set "variable= this value surrounded with spaces " 
set "variable=this value contains a trailing space " 
set "variable =this variable name contains a trailing space" 

适用于脚本中的某些命令：

FOR /F "tokens=1 delims==" %%n IN (ModVersion.txt) DO SET "mod-version-number=%%n" 
::: 
set "mod-version=mod_version = %mod-version-number%" 

等

Answer 2

这是因为批处理文件中的空间。该测试文件

@echo three >testbat.txt 

产生包含与一个尾随空间中的直线"three "的文本文件。但是这一个

@echo three>testbat.txt 

生成包含线"three"没有尾随空间的文本文件。