HP 9000 700 Series Owner's Manual page 148

Glossary
SICL
Standard Instrument Control Library.
single-user state
The state of a computer where there is little or no process activity and
no users logged in. The system is only accessible to the current system
administrator (root). This mode is brought about by execution of
shutdown (1). Also called
SPU
System Processing Unit. The instruction- and graphics-processing module
of the computer (in this case, the Model V743 VXI controller) containing
the CPU and I/O processors. Also called the \SPU module".
standard input
The source of input data for a program. The standard input le is often
called stdin, and is automatically opened by the shell for reading on le
descriptor 0 for every command invoked.
standard output
The destination of output data from a program. Standard output appears
on the display unless it is redirected otherwise.
su
Super User.
system name
The eight-character (or less) string which uniquely identi es a system.
Usually identical with the system's host name found in
Internet Protocol (IP) number is sometimes used instead of a system name
to identify the system.
tree structure
The HP-UX method of organizing les and directories into a branching
hierarchical structure. This structure looks like an inverted tree with the
\root" directory at the top, descending into multiple directory/ le branches
that end in clusters of les.
Glossary-10
single-user mode .
See
root user .
. The
/etc/hosts