com是什么格式文件，com文件怎么打开？用什么打开？
.com
文件类型：DOS Command File
扩展名为.com的文件是一个可执行文件。文件说明：
Executable program, similar to a .EXE file, but typically smaller and uses a more basic syntax without any metadata; COM files are most often used to execute a list of instructions, while EXE files are full-fledged programs; they are written for MS-DOS, but can be executed in Windows.Note: If a folder contains both COM and EXE files with the same filename, the COM file is run (instead of the EXE file) if the filename typed at the command prompt without the extension.
The .com file extension has been used by DOS and Windows files for several decades and should not be confused with the .com domain suffix, which became well-known with the growth of the Web..com
打开.com文件
Mac OS
Parallels Desktop 5 for Mac with Windows installed
Windows
Runs itselfLinux
其它内容
来源：.com文件
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com文件 com
