批次中的每個字符串後空間輸出

Question

嘿，我現在有這個代碼把不同的文本不同的文本文件到變量，然後輸出到一個文件：

@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 

但輸出具有各一個空格（whitline） ：

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

不知道爲什麼會發生這種情況。

Answer 1

它是位於>或>>重定向器之前的空格。刪除它如下（在dbenham's benefitting comment方面編輯）：

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

或

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

說明：如果變量%minecraft-version%結束與

• @echo %minecraft-version%>> build.properties可以打破輸出單個數字前有一個空格;
• >> build.properties @echo %minecraft-version%不足，因爲該行可能包含不需要的（遺忘的）尾隨空間。

此外，保持完全控制在開頭和結尾的變量名和值的空間，可以使用雙引號set命令如下：

set "variable=value" 

想到了別人：

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" 

適用於腳本中的某些命令：

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

這是因爲批處理文件中的空間。該測試文件

@echo three >testbat.txt 

產生包含與一個尾隨空間中的直線"three "的文本文件。但是這一個

@echo three>testbat.txt 

生成包含線"three"沒有尾隨空間的文本文件。