INTRO(1) GENIX Programmer's Manual INTRO(1)
NAME
intro - introduction to commands
DESCRIPTION
This section describes publicly accessible commands in alphabetic
order. Certain distinctions of purpose are made in the headings:
(1) Commands of general utility.
(1C) Commands for communication with other systems.
(1G) Commands used primarily for graphics and computer-aided design.
N.B.: Commands related to system maintenance, which appeared in sec-
tion 1, distinguished by (1M), in previous versions of the manual
have been moved to section 8, as they are of little interest to most
users.
SEE ALSO
Section (6) for computer games, section (8) for system maintenance
commands.
How to get started, in the Introduction.
DIAGNOSTICS
Upon termination each command returns two bytes of status, one sup-
plied by the system giving the cause for termination, and (in the
case of `normal' termination) one supplied by the program, see wait
and exit(2). The former byte is 0 for normal termination, the
latter is customarily 0 for successful execution, nonzero to indi-
cate troubles such as erroneous parameters, bad or inaccessible
data, or other inability to cope with the task at hand. It is
called variously `exit code', `exit status' or `return code', and is
described only where special conventions are involved.
Printed 11/16/83 1