root:x:0:1:Super-User:/:/sbin/sh
daemon:x:1:1::/:
bin:x:2:2::/usr/bin:
sys:x:3:3::/:
adm:x:4:4:Admin:/var/adm:
lp:x:71:8:Line Printer Admin:/usr/spool/lp:
uucp:x:5:5:uucp Admin:/usr/lib/uucp:
nuucp:x:9:9:uucp Admin:/var/spool/uucppublic:/usr/lib/uucp/uucico
smmsp:x:25:25:SendMail Message Submission Program:/:
listen:x:37:4:Network Admin:/usr/net/nls:
nobody:x:60001:60001:Nobody:/:
noaccess:x:60002:60002:No Access User:/:
nobody4:x:65534:65534:SunOS 4.x Nobody:/:

root

0

Superuser account. 

daemon

1

Umbrella system daemon associated with routine system tasks. 

bin

2

Administrative daemon associated with running system binaries to perform some routine system task. 

sys

3

Administrative daemon associated with system logging or updating files in temporary directories. 

adm

4

Administrative daemon associated with system logging. 

lp

71

Line printer daemon. 

uucp

5

Daemon associated with uucp functions.

nuucp

6

Daemon associated with uucp functions.

smmsp

25 

Sendmail message submission program daemon. 

listen

37

Network listener daemon. 

nobody

60001

Assigned to users or software processes that do not need nor should have any special permissions.  

noaccess

60002

Assigned to a user or a process that needs access to a system through some application but without actually logging in. 

nobody4

65534

SunOS 4.0 or 4.1 version of the nobody user account.