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sometimes, we got a BIG file, but we don't know its file type. so we need to use a tool to peek the very first bytes of the file to find out its file type. but the file is too big to the normal text editor, i have to wait for a long time! P.S. I need tools, not the code. | |||
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file is the usual Unix command to determine a file type. | |||
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Use a hex editor (e.g. 0xED on Mac OS X). They usually display data as both ASCII and hexadecimal and are usually optimized for handling extremely large files (since they don't do line breaks, it's really not difficult). | ||||
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