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HP-UX Reference > Introductionintro(1M)HP-UX 11i Version 2: December 2007 Update |
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NAMEintro — introduction to system maintenance commands and application programs DESCRIPTIONThis 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. Command SyntaxUnless 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:
RETURN STATUSUpon termination, each command returns two bytes of status, one 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. WARNINGSSome 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. SEE ALSOgetopt(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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