EOF
/E-O-F/ [abbreviation, `End Of File'] n. 1. [techspeak] The
out-of-band value returned by C's sequential character-input
functions (and their equivalents in other environments) when end of
file has been reached. This value is -1 under C
libraries postdating V6 UNIX, but was originally 0. 2. [UNIX] The
keyboard character (usually control-D, the ASCII EOT (End Of
Transmission) character) that is mapped by the terminal driver into
an end-of-file condition. 3. Used by extension in non-computer
contexts when a human is doing something that can be modeled as a
sequential read and can't go further. "Yeah, I looked for a list
of 360 mnemonics to post as a joke, but I hit EOF pretty fast; all
the library had was a JCL manual." See also
EOL.