intro(1m)
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intro
introduction to system maintenance commands and application
programs
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DESCRIPTION
This chapter describes, in alphabetical order, commands that are
used chiefly for system maintenance and administration. Use the
commands in this chapter with those listed in Chapter 1 of the
User's Reference for the DG/UX System and Chapters 2, 3, 4, and 5
of the Programmer's Reference for the DG/UX System.
COMMAND SYNTAX
Unless otherwise noted, commands described in this chapter accept
options and other arguments according to the following syntax:
name [option(s)] [cmdarg(s)]
name The name of an executable file.
option - noargletter(s) or,
- argletter<>optarg
where <> is optional white space.
noargletter A single letter representing an option without an
argument.
argletter A single letter representing an option requiring
an argument.
optarg Argument (character string) satisfying preceding
argletter.
cmdarg Pathname (or other command argument) not beginning
with -, or - by itself, indicating the standard
input.
SEE ALSO
getopt(1), getopt(3C).
User's Reference for the DG/UX System
Programmer's Reference for the DG/UX System
DG/UX 4.00 Page 1
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intro(1m)
DIAGNOSTICS
Upon termination, each command returns two bytes of status, one
supplied by the system and giving the cause for termination, and
(in the case of normal termination) one supplied by the program
(see wait(2) and exit(2)). The former byte is 0 for normal
termination. The latter is customarily 0 for successful
execution, and non-zero for such problems as erroneous
parameters, or bad or inaccessible data. It is called variously
``exit code'', ``exit status'', or ``return code'', and is
described only where special conventions are involved.
BUGS
Many commands do not adhere to the described syntax.
DG/UX 4.00 Page 2
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