将文本文件内容读入批处理变量

Question

I have files:
y:\\a.txt
y:\\b.txt

I have x.bat:

@echo off  
y:  
cd \  
for /f %%f in ('dir /b y:\*.txt') do (  
set content=  
set /p content=<y:\%%f  
echo y:\%%f  
echo content=%content%  
)

and the result:

y:\a.txt  
content=  
y:\b.txt  
content=  

Why does not contain %content% variable the first lie of the text files? The files are not empty.

Answer 1

Modify your batch script as follows:

@echo off  
setlocal enableDelayedExpansion
y:\
cd \
set content=
for /f %%f in ('dir /b *.txt') do (  
set /p content=<%%~dpff
echo file:%%~dpff , content:!content!
)

EDIT. Note the ~dpf to get the file path. As @foxidrive has mentioned it wouldn't have worked without a proper path.

The output is along the lines of:

file:y:\a.txt , content:lorem
file:y:\b.txt , content:ipsum
file:y:\c.txt , content:Ocaml, Haskell