INTRO(1M) SysV INTRO(1M)
NAME
intro - introduction to maintenance commands and application programs
DESCRIPTION
This section describes, in alphabetical order, commands that are used
chiefly for system maintenance and administration purposes. The commands
in this section should be used along with those listed in the Using Your
SysV Environment and the SysV Programmer's Reference. References of the
form name(1), (2), (3), (4) and (5) refer to entries in the above
manuals. References of the form name(1M), name(7) or name(8) refer to
entries in this manual.
COMMAND SYNTAX
Unless otherwise noted, commands described in this section accept options
and other arguments according to the following syntax:
name [option(s)] [cmdarg(s)]
where:
name Is the name of an executable file
option - noargletter(s) or,
- argletter<>optarg
where <> is optional white space
noargletter Is a single letter representing an option without an
argument
argletter Is a single letter representing an option requiring an
argument
optarg Is an argument (character string) satisfying preceding
argletter
cmdarg Pathname (or other command argument) not beginning with -
or, - by itself indicating the standard input
CAUTION
Not all commands follow the above syntax.
DIAGNOSTICS
On 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 nonzero to indicate troubles
such as erroneous parameters, bad or inaccessible data. It can be called
"exit code", "exit status", or "return code", and is described only where
special conventions are involved.
SEE ALSO
getopt(1) getopt(3C)