What is a daemon?
Answer
In Unix and some other operating systems, a daemon is a computer
program that runs in the background, It is not under the direct control of a
user.
They are usually initiated as background processes. Daemons have names that end
with the letter "d".
E.g. syslogd, sshd
In a Unix, the parent process of a daemon is usually the init process (PID=1).
Processes usually become daemons by forking a child process and then having
their parent process immediately exit, thus causing init to adopt the child
process.
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