Question

1)What is the difference between a SYMLINK and a HARDLINK?

2) What is the difference between a DAEMON and a SERVICE?

3) What is the difference between a DAEMON and a PROCESS?

Answer 1

1)

A hard link is an additional name of the original file which refers inode to access the target file. In contrast, soft link is distinct to the original file and is an alias to original file but do not uses inode.

2)

A Service could refer to either a Daemon or a Service. Service is something the operating system provides for all users. One such example is xinetd/inetd.

A daemon is a subset of services that always run in background waiting to serve a request. Daemon is an application that has no terminal associations.

3)

As discussed above, a daemon is a subset of services that always run in background waiting to serve a request. Daemon is an application that has no terminal associations.

A process is a running instance of an executable. It is represented by a process id and has an address space assigned to it.