Updated to Mavericks. Now theres tons of activity in my terminal and my activity monitor doesn't seem normal. I want to think someone's hacking me, but i need experienced help please!

Question

I spent all night trying to fix this. It seems to me that someone has been trying to hack into my system with all of the random codes/lines in my terminal and i have all of his foreign IP addresses. And now i get this strange message that popped up in my terminal. Idk what it entirely means? I would very appreciate if someone could just walk me through this. Thank you very much.
First time poster. I have Macbook Pro. OSX. Just downloaded the new mavericks. I'm i have my firewall on. I stay secure. I run Netbarrier, Virusbarrier, IdentityScrubber.
I know something is a little odd or just doesn't make since about my activity monitor. Then my WiFi was hacked last night and this person was writing tons lines of commands/codes that i found in my terminal and my activity monitor doesn't look normal,  and I've only been a mac owner for about a year now and i'm learning more and more but while trying to figure out what was going on this message popped up which concerned me the most. Any help would be most appreciated, thanks guys. I have my terminal full of his foreign ip addresses i noticed, and a lot of other commands and lines he wrote out that i definitely did not type myself. Can anyone give me a hand on this? Thanks
--- 192.168.1.103 ping statistics ---
10 packets transmitted, 0 packets received, 100.0% packet loss
Extol:~ FBI$ who
FBI      console  Nov  7 02:14
FBI      ttys000  Nov  7 04:33
Extol:~ FBI$ whois
usage: whois [-aAbdgiIlmQrR6] [-c country-code | -h hostname] [-p port] name ...
Extol:~ FBI$ whois 192.168.1.103
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
# Query terms are ambiguous.  The query is assumed to be:
#     "n 192.168.1.103"
# Use "?" to get help.
# The following results may also be obtained via:
# http://whois.arin.net/rest/nets;q=192.168.1.103?showDetails=true&showARIN=false& ext=netref2
NetRange:       192.168.0.0 - 192.168.255.255
CIDR:           192.168.0.0/16
OriginAS:
NetName:        PRIVATE-ADDRESS-CBLK-RFC1918-IANA-RESERVED
NetHandle:      NET-192-168-0-0-1
Parent:         NET-192-0-0-0-0
NetType:        IANA Special Use
Comment:        These addresses are in use by many millions of independently operated networks, which might be as small as a single computer connected to a home gateway, and are automatically configured in hundreds of millions of devices.  They are only intended for use within a private context  and traffic that needs to cross the Internet will need to use a different, unique address.
Comment:
Comment:        These addresses can be used by anyone without any need to coordinate with IANA or an Internet registry.  The traffic from these addresses does not come from ICANN or IANA.  We are not the source of activity you may see on logs or in e-mail records.  Please refer to http://www.iana.org/abuse/answers
Comment:
Comment:        These addresses were assigned by the IETF, the organization that develops Internet protocols, in the Best Current Practice document, RFC 1918 which can be found at:
Comment:        http://datatracker.ietf.org/doc/rfc1918
RegDate:        1994-03-15
Updated:        2013-08-30
Ref:            http://whois.arin.net/rest/net/NET-192-168-0-0-1
OrgName:        Internet Assigned Numbers Authority
RegDate:
Updated:        2012-08-31
Ref:            http://whois.arin.net/rest/org/IANA
OrgTechHandle: IANA-IP-ARIN
OrgTechName:   Internet Corporation for Assigned Names and Number
OrgTechPhone: 
OrgTechEmail:
OrgTechRef:    http://whois.arin.net/rest/poc/IANA-IP-ARIN
OrgAbuseHandle: IANA-IP-ARIN
OrgAbuseName:   Internet Corporation for Assigned Names and Number
OrgAbusePhone
OrgAbuseEmail: 
OrgAbuseRef:    http://whois.arin.net/rest/poc/IANA-IP-ARIN
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
Extol:~ FBI$
Extol:~ FBI$ hosts
-bash: hosts: command not found
Extol:~ FBI$ who
FBI      console  Nov  7 02:14
FBI      ttys000  Nov  7 04:33
Extol:~ FBI$ whois
usage: whois [-aAbdgiIlmQrR6] [-c country-code | -h hostname] [-p port] name ...
Extol:~ FBI$ whois  192.168.0.0 - 192.168.255.255
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
# Query terms are ambiguous.  The query is assumed to be:
#     "n 192.168.0.0"
# Use "?" to get help.
# The following results may also be obtained via:
# http://whois.arin.net/rest/nets;q=192.168.0.0?showDetails=true&showARIN=false&ex t=netref2
NetRange:       192.168.0.0 - 192.168.255.255
CIDR:           192.168.0.0/16
OriginAS:
NetName:        PRIVATE-ADDRESS-CBLK-RFC1918-IANA-RESERVED
NetHandle:      NET-192-168-0-0-1
Parent:         NET-192-0-0-0-0
NetType:        IANA Special Use
Comment:        These addresses are in use by many millions of independently operated networks, which might be as small as a single computer connected to a home gateway, and are automatically configured in hundreds of millions of devices.  They are only intended for use within a private context  and traffic that needs to cross the Internet will need to use a different, unique address.
Comment:
Comment:        These addresses can be used by anyone without any need to coordinate with IANA or an Internet registry.  The traffic from these addresses does not come from ICANN or IANA.  We are not the source of activity you may see on logs or in e-mail records.  Please refer to http://www.iana.org/abuse/answers
Comment:
Comment:        These addresses were assigned by the IETF, the organization that develops Internet protocols, in the Best Current Practice document, RFC 1918 which can be found at:
Comment:        http://datatracker.ietf.org/doc/rfc1918
RegDate:        1994-03-15
Updated:        2013-08-30
Ref:            http://whois.arin.net/rest/net/NET-192-168-0-0-1
OrgName:        Internet Assigned Numbers Authority
OrgId:          IANA
Updated:        2012-08-31
Ref:            http://whois.arin.net/rest/org/IANA
OrgTechHandle: IANA-IP-ARIN
OrgTechName:   Internet Corporation for Assigned Names and Number
OrgTechPhone: 
OrgTechEmail
OrgTechRef:    http://whois.arin.net/rest/poc/IANA-IP-ARIN
OrgAbuseHandle: IANA-IP-ARIN
OrgAbuseName:   Internet Corporation for Assigned Names and Number
OrgAbusePhone: 
OrgAbuseEmail:
OrgAbuseRef:    http://whois.arin.net/rest/poc/IANA-IP-ARIN
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
Whois Server Version 2.0
Domain names in the .com and .net domains can now be registered
with many different competing registrars. Go to http://www.internic.net
for detailed information.
No match for "-".
>>> Last update of whois database: Thu, 07 Nov 2013 13:19:14 UTC <<<
NOTICE: The expiration date displayed in this record is the date the
registrar's sponsorship of the domain name registration in the registry is
currently set to expire. This date does not necessarily reflect the expiration
date of the domain name registrant's agreement with the sponsoring
registrar.  Users may consult the sponsoring registrar's Whois database to
view the registrar's reported date of expiration for this registration.
TERMS OF USE: You are not authorized to access or query our Whois
database through the use of electronic processes that are high-volume and
automated except as reasonably necessary to register domain names or
modify existing registrations; the Data in VeriSign Global Registry
Services' ("VeriSign") Whois database is provided by VeriSign for
information purposes only, and to assist persons in obtaining information
about or related to a domain name registration record. VeriSign does not
guarantee its accuracy. By submitting a Whois query, you agree to abide
by the following terms of use: You agree that you may use this Data only
for lawful purposes and that under no circumstances will you use this Data
to: (1) allow, enable, or otherwise support the transmission of mass
unsolicited, commercial advertising or solicitations via e-mail, telephone,
or facsimile; or (2) enable high volume, automated, electronic processes
that apply to VeriSign (or its computer systems). The compilation,
repackaging, dissemination or other use of this Data is expressly
prohibited without the prior written consent of VeriSign. You agree not to
use electronic processes that are automated and high-volume to access or
query the Whois database except as reasonably necessary to register
domain names or modify existing registrations. VeriSign reserves the right
to restrict your access to the Whois database in its sole discretion to ensure
operational stability.  VeriSign may restrict or terminate your access to the
Whois database for failure to abide by these terms of use. VeriSign
reserves the right to modify these terms at any time.
The Registry database contains ONLY .COM, .NET, .EDU domains and
Registrars.
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
# Query terms are ambiguous.  The query is assumed to be:
#     "n 192.168.255.255"
# Use "?" to get help.
# The following results may also be obtained via:
# http://whois.arin.net/rest/nets;q=192.168.255.255?showDetails=true&showARIN=fals e&ext=netref2
NetRange:       192.168.0.0 - 192.168.255.255
CIDR:           192.168.0.0/16
OriginAS:
NetName:        PRIVATE-ADDRESS-CBLK-RFC1918-IANA-RESERVED
NetHandle:      NET-192-168-0-0-1
Parent:         NET-192-0-0-0-0
NetType:        IANA Special Use
Comment:        These addresses are in use by many millions of independently operated networks, which might be as small as a single computer connected to a home gateway, and are automatically configured in hundreds of millions of devices.  They are only intended for use within a private context  and traffic that needs to cross the Internet will need to use a different, unique address.
Comment:
Comment:        These addresses can be used by anyone without any need to coordinate with IANA or an Internet registry.  The traffic from these addresses does not come from ICANN or IANA.  We are not the source of activity you may see on logs or in e-mail records.  Please refer to http://www.iana.org/abuse/answers
Comment:
Comment:        These addresses were assigned by the IETF, the organization that develops Internet protocols, in the Best Current Practice document, RFC 1918 which can be found at:
Comment:        http://datatracker.ietf.org/doc/rfc1918
RegDate:        1994-03-15
Updated:        2013-08-30
Ref:            http://whois.arin.net/rest/net/NET-192-168-0-0-1
OrgName:        Internet Assigned Numbers Authority
OrgId:          IANA
RegDate:
Updated:        2012-08-31
Ref:            http://whois.arin.net/rest/org/IANA
OrgTechHandle: IANA-IP-ARIN
OrgTechName:   Internet Corporation for Assigned Names and Number
OrgTechPhone:
OrgTechEmail
OrgTechRef:    http://whois.arin.net/rest/poc/IANA-IP-ARIN
OrgAbuseHandle: IANA-IP-ARIN
OrgAbuseName:   Internet Corporation for Assigned Names and Number
OrgAbusePhone: 
OrgAbuseEmail: 
OrgAbuseRef:    http://whois.arin.net/rest/poc/IANA-IP-ARIN
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
<Personal Information Edited by Host>

Answer 1

haha, so now i'm thinking. I'm learning the terminal as fast as i can but there are several lines of codes and commands in there that throws up red flags to me that i don't fully understand. It just looks fishy too me. It would be highly appreciated if someone could just check this out just to tell me that i don't need to worry about it. Or point me in the right direction. I just feel un easy about this. ha.