Glossary U & V
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- Unix:
- A powerful operating system developed by AT&T Bell Laboratories in 1969.
Used primarily by universities and mid sized businesses. It is written in the C
programming language.
This multi user, multitasking operating system was designed for both large mainframe computers and minicomputers.
- Virus:
- A small program designed to infect other programs. It attaches itself to
a program or file so it can spread from one computer to another, leaving
infections as it travels.
They can be annoying or damage hardware and software.
They are attached to an executable file, it can exist on your computer, but cannot infect unless you run or open the malicious program.
You spread a computer virus, by sharing infected files or sending e-mails with viruses as attachments.They fall into three categories:
Boot:A virus that attacks the operating system master boot
record and startup files on the hard drive.Macro: This virus inserts itself into applications,such as
keyboard and mouse commands.File infection virus: Are some of the most notorious.
They attach themselves to programs with .com, .exe,
.bin or .sys extensions.Antivirus software can disinfect files introduced to your computer.