Glossary
standard error
standard input
standard output
startup
super user
One of three files described under standard
output.
The second of three files described under standard
output.
Open files, customarily available when a process
begins, with file descriptors 0, 1, 2, and stdio
names “stdin,” “stdout,” “stderr;” where
possible, utilities by default read from the
standard input, write on the standard output, and
place error comments on the standard error file.
Initially, all three of these files default to your
terminal.
Same as boot.
User ID 0 (user identification number 0), which
can access any file regardless of permissions and
can perform certain privileged system calls; for
example, setting the clock. The root [3] login
name.
GL-8 IPC-1600 USER’S GUIDE