|
|
1.1 root 1: .\" @(#)intro.1 6.1 (Berkeley) 4/29/85
2: .\"
3: .TH INTRO 1 "April 29, 1985"
4: .AT 3
5: .SH NAME
6: intro \- introduction to commands
7: .SH DESCRIPTION
8: This section describes publicly accessible commands in alphabetic order.
9: Certain distinctions of purpose are made in the headings:
10: .TP
11: (1)
12: Commands of general utility.
13: .TP
14: (1C)
15: Commands for communication with other systems.
16: .TP
17: (1G)
18: Commands used primarily for graphics and computer-aided design.
19: .PP
20: N.B.: Commands related to system maintenance used to appear in
21: section 1 manual pages and were distinguished by (1M) at the top of the
22: page. These manual pages now appear in section 8.
23: .SH SEE ALSO
24: Section (6) for computer games.
25: .PP
26: .I How to get started,
27: in the Introduction.
28: .SH DIAGNOSTICS
29: Upon termination each command returns two bytes of status,
30: one supplied by the system giving the cause for
31: termination, and (in the case of `normal' termination)
32: one supplied by the program, see
33: .I wait
34: and
35: .IR exit (2).
36: The former byte is 0 for normal termination, the latter
37: is customarily 0 for successful execution, nonzero
38: to indicate troubles such as erroneous parameters, bad or inaccessible data,
39: or other inability to cope with the task at hand.
40: It is called variously `exit code', `exit status' or
41: `return code', and is described only where special conventions are involved.
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.