HP-UX Reference (11i v1 05/09) - 1 User Commands A-M (vol 1)

intro(1) intro(1)

NETWORKING FEATURES

Information under this heading is applicable only if you are using the networking

feature described there (such as NFS).

RETURN VALUE Discusses various values returned upon completion of program calls.

DIAGNOSTICS Discusses diagnostics indications that may be produced. Self-explanatory messages

are not listed.

ERRORS Lists error conditions and their corresponding error message or return value.

EXAMPLES Provides examples of typical usage, where appropriate.

WARNINGS Points out potential pitfalls.

DEPENDENCIES Points out variations in HP-UX operation that are related to the user or speciﬁc

hardware or hardware combinations.

AUTHOR Indicate the origin of the software documented by the manual entry.

FILES Lists ﬁle names that are built into the program or command.

SEE ALSO Provides pointers to related topics.

BUGS Discusses known bugs and deﬁciencies, occasionally suggesting ﬁxes.

STANDARDS CONFORMANCE

This section lists the standard speciﬁcations to which the HP-UX component con-

forms.

RETURN VALUE

Upon 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’’, ‘‘return code’’, or ‘‘return value’’, and are described only where special

conventions are involved.

WARNINGS

Some commands produce unexpected results when processing ﬁles containing null characters. These com-

mands often treat text input lines as strings, and therefore become confused when they encounter a null

character (the string terminator) within a line.