intro - introduction to system maintenance commands and application
This section describes commands that are used chiefly for system
maintenance and administration purposes. The commands in this section
should be used in conjunction with other sections of this manual, as
well as the HP-UX System Administration manuals for your system.
Unless otherwise noted, commands described in this section accept
options and other arguments according to the following syntax:
name [ option ( s )] [ cmd_arg ( s )]
where the elements are defined as follows:
name Name of an executable file.
option One or more options can appear on a command line. Each
takes one of the following forms:
A single letter representing an option
without an argument.
Two or more single-letter options combined
into a single command-line argument.
A single-letter option followed by a required
is the single letter representing
an option that requires an
is an argument (character string)
satisfying the preceding
<> represents optional white space.
cmd_arg Path name (or other command argument) not beginning
with -, or - by itself indicating the standard input.
If two or more cmd_args appear, they must be separated
by white space.
Upon termination, each command returns two bytes of status, one
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supplied by the system giving the cause for termination, and (in the
case of ``normal'' termination) one supplied by the program (for
descriptions, see wait(2) and exit(2)). The system-supplied byte is 0
for normal termination. The byte provided by the program is
customarily 0 for successful execution and non-zero to indicate errors
or failure such as incorrect parameters in the command line, or bad or
inaccessible data. Values returned are usually called variously
``exit code'', ``exit status'', or ``return code'', and are described
only where special conventions are involved.
Some commands produce unexpected results when processing files
containing null characters. These commands often treat text input
lines as strings and therefore become confused upon encountering a
null character (the string terminator) within a line.
getopt(1), exit(2), wait(2), getopt(3C), hier(5), introduction(9).
Web access to HP-UX documentation at http://docs.hp.com.
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