terminal list too many accounts hacked?

i was worried about my mac being hacked cause i use the public library wifi everyday so i googled it and ehow.com told me to type this in the terminal (dscl . list /users) to see all the accounts that access my mac and i got a huge list what does this all mean please? and how can i monitor my mac for this?

Isley-Ngos-MacBook-Pro:~ isley$ dscl . list /users
_amavisd
_appowner
_appserver
_ard
_atsserver
_calendar
_carddav
_clamav
_coreaudiod
_cvmsroot
_cvs
_cyrus
_devdocs
_dovecot
_dpaudio
_eppc
_installer
_jabber
_lda
_locationd
_lp
_mailman
_mcxalr
_mdnsresponder
_mysql
_pcastagent
_pcastserver
_postfix
_qtss
_sandbox
_screensaver
_securityagent
_serialnumberd
_softwareupdate
_spotlight
_sshd
_svn
_teamsserver
_timezone
_tokend
_trustevaluationagent
_unknown
_update_sharing
_usbmuxd
_uucp
_windowserver
_www
_xgridagent
_xgridcontroller
annengo
annovisngo
daemon
nobody
root

There are two users on your machine, "annengo" and "annovisngo". The rest are various services that are either running or have run on your machine..

You are fine..

ok thanks

has my account been hacked

hi I just wanted to check if any other users are getting into my macbook as i am the only one that uses it

i did the whole terminal thing and typed in 'dscl . list /users' and this came up:

_amavisd
_appleevents
_appowner
_appserver
_ard
_assetcache
_atsserver
_avbdeviced
_calendar
_ces
_clamav
_coreaudiod
_cvmsroot
_cvs
_cyrus
_devdocs
_devicemgr
_dovecot
_dovenull
_dpaudio
_eppc
_ftp
_geod
_installassistant
_installer
_jabber
_kadmin_admin
_kadmin_changepw
_krb_anonymous
_krb_changepw
_krb_kadmin
_krb_kerberos
_krb_krbtgt
_krbtgt
_lda
_locationd
_lp
_mailman
_mcxalr
_mdnsresponder
_mysql
_netbios
_netstatistics
_networkd
_postfix
_postgres
_qtss
_sandbox
_screensaver
_scsd
_securityagent
_serialnumberd
_softwareupdate
_spotlight
_sshd
_svn
_taskgated
_teamsserver
_timezone
_tokend
_trustevaluationagent
_unknown
_update_sharing
_usbmuxd
_uucp
_warmd
_webauthserver
_windowserver
_www
daemon
nobody
root

is there anything suspicious? help would be greatly appreciated, thanks!

What is suspicious is that you don't have a user account it seems? You must be using the root account which isn't a smart thing to be doing. Other than that,it looks fine..

ok thanks, im a bit of a rookie when it comes to macs, whats the problem of not having a user acc?