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Glossary
file system
getty
init
interrupt
kernel
line discipline
login
1. A collection of files that can be mounted on a
block special file; each file of a file system
appears exactly once in the i-list of the file
system and is accessible via some path from
the root directory of the file system.
2. The collection of all files on a computer.
3. The part of the kernel that deals with file
systems
[1].
One of a series of processes which connect the
user to the UNIX system. getty is invoked by init
and, in turn, invokes login.
A general process spawner which is invoked as
the last step in the boot procedure; it regularly
checks a table that defines what processes should
run at what run level.
1. A signal that normally terminates a process,
caused by a break or an interrupt character.
2. A signal generated by a hardware condition
or a peripheral device.
3. Loosely, any signal.
The UNIX system proper; resident code that
implements the system calls.
A module to handle protocol or data conversion
for a stream. A line discipline, unlike a filter, is
part of the kernel.
1. The program that controls logging in.
2. The act of logging in.
3. By extension, the computing session that
follows a login [2].
GLOSSARY GL-5