Difference between process in background and daemon

Question

What is technically the difference of a process that started in foreground and was manually put into background and a daemon? Do they have different properties?

Solution

You can take a look at the definition of a Daemon, which tells you what the properties of a daemon are, so biggest ones are:

• No Controlling Terminal - STDIN, STDOUT, STDERR associated with starting terminal are redirected.
• Parent Process is set to init
• Daemon is a Process Group Leader.

Comments

[Admin]

Related Question: unix.stackexchange.com/questions/56495/…

[jiggunjer]

So daemons need not have their own sessions, per se?

[Karlson]

@jiggunjer You mean a user interactive session?

[jiggunjer]

I thought every process had a SID, a session ID, ps displays it.

[Karlson]

@jiggunjer What are you talking about?

[jiggunjer]

A process is part of a session, yes?

[Karlson]

@jiggunjer Can you defined what you mean by session?