How to find the list of daemon processes and zombie processes

By OK - 
ps axo pid,ppid,pgrp,tty,tpgid,sess,comm |awk '$2==1' |awk '$1==$3'
In the above command I used the very properties of a daemon to filter them out, from all of existing processes in Linux.
The parent of a daemon is always Init, so check for ppid 1. The daemon is normally not associated with any terminal, hence we have ‘?’ under tty. The process-id and process-group-id of a daemon are normally same The session-id of a daemon is same as it process id.
Daemons are started by the init process, which means they have a PPID of 1.
Therefore:
ps -ef | awk '$3 == 1'
With GNU ps on Linux:
[
$ ps --version

procps-ng version 3.3.3
]
Zombies:
ps -lA | grep '^. Z'

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