Although the HP-UX operating system does not appear in Figure 1-1 “HP Fortran 90 compiler environment”, it provides a
variety of resources for programs executing within HP-UX. For example,
HP-UX captures the command line you use to invoke an executable
program, breaks it up into arguments, and makes them available to
your program.
HP-UX also has many callable system routines that provide
low-level access to kernel-level resources. For example, your program
can call HP-UX file-processing routines as alternatives to Fortran
I/O.
Chapter 7 “Writing HP-UX applications” discusses
how HP Fortran 90 programs can take advantage of HP-UX resources.
For a full description of HP-UX system routines, see the HP-UX
Reference.
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