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System Calls
If your application uses the DG/UX system
call dg_process_info to obtain
information about the system's
current processes, you will need to figure out how to get the
information on the new platform. HP-UX has a similar system call,
pstat_getproc, but neither AIX,
Solaris nor Linux have a system call
available to obtain this type of information. If you are switching
to these systems you must make a variety of calls to get the
information and then put it in a format your application
understands.
Datatek's system call library will take care of determining the
correct action based on the host operating system and will return
the information in the format your application currently requires.
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System Configuration
Users of DG/UX have the reliable, user-friendly sysadm
utility to
configure their system and its devices. Though other platforms offer a
system configuration method via a utility (such as AIX's smit and
HP-UX's SAM) or a set of tools,
significant differences in interface
and functionality usually exist. For instance, every distribution of
Linux provides its own customized system administration utility, as well
as a set of generic system administration tools.
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Some Additional Issues
- Device handling and
addressing
- Printer handling
differences
- Different system program locations
- Environmental differences
- Program execution differences
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