file type | usual extension | function |
executable | exe, com, bin or none | read to run machine language program |
object | obj, o | compiled, machine language, not linked |
source code | c, cc, java, pas, asm, a | source code in various languages |
batch | bat, sh | commands to the command interpreter |
text | txt, doc | textual data, documents |
word processor | wp, tex, rtf, doc | various word-processor formats |
library | lib, a, so, dll | libraries of routines for programmers |
print or view | ASCII or binary file in a format for printing or viewing | |
archive | arc, zip, tar | related files grouped into one file, sometimes compressed, for archiving or storage |
multimedia | mpg, mov, rm | binary file containing audio or A/V information |