How do I show the header of a file in Unix?
I generally use od -bc {filename} | head to look at the header of a binary file. view works too, but I find that it is generally better to see the output directly on the terminal.
The question is a bit wide in scope, so the suggestion is to approach in steps.
- Use file command to get first level information: File (Unix).
- Then subsequently use FFMPG for audio video headers.
- And dump for object files.
See also: ffmpeg command line options