Saudações a todos,

Gostaria de saber como fazer para alterar a versão/nome do sistema
operacional no comando uname e também na detecção do nmap, já fiz algumas
pesquisas mais sempre retorna sobre o motd que não é o objetivo.

No meu sistema quanto executo uname -a retorna a linha abaixo:

FreeBSD matilda 11.1-STABLE FreeBSD 11.1-STABLE #3 r327905: Sat Jan 13
01:31:20 -02 2018     NoRm4nD@matilda:/usr/obj/usr/src/sys/MATILDA  amd64

No caso eu quero alterar para que no lugar de FreeBSD 11.1-STABLE retorne
um nome especifico de minha escolha.

E se alterando isso um scanner de OS do nmap irá detectar e retorna o novo
nome do tipo do sistema ?

Nesse campo do retorno do resultado:

Service Info: OS: FreeBSD; CPE: cpe:/o:freebsd:freebsd

root@matilda:/ # nmap -A -T4 127.0.0.1

Starting Nmap 7.40 ( https://nmap.org ) at 2018-07-08 14:22 -03
Warning: 127.0.0.1 giving up on port because retransmission cap hit (6).
Stats: 0:00:19 elapsed; 0 hosts completed (1 up), 1 undergoing SYN Stealth
Scan
SYN Stealth Scan Timing: About 32.10% done; ETC: 14:23 (0:00:38 remaining)
Stats: 0:00:21 elapsed; 0 hosts completed (1 up), 1 undergoing SYN Stealth
Scan
SYN Stealth Scan Timing: About 38.63% done; ETC: 14:23 (0:00:32 remaining)
Stats: 0:00:55 elapsed; 0 hosts completed (1 up), 1 undergoing SYN Stealth
Scan
SYN Stealth Scan Timing: About 99.99% done; ETC: 14:23 (0:00:00 remaining)
Nmap scan report for localhost (127.0.0.1)
Host is up (0.000014s latency).
Not shown: 998 closed ports
PORT     STATE SERVICE VERSION
53/tcp   open  domain  Unbound 1.5.10
| dns-nsid:
|   id.server: matilda
|_  bind.version: unbound 1.5.10
6666/tcp open  ssh     OpenSSH 7.5 (FreeBSD 20170903; protocol 2.0)
| ssh-hostkey:
|   2048 43:ed:82:8c:fa:67:b3:95:43:e9:89:d5:7f:01:f8:51 (RSA)
|_  256 a1:2f:e7:76:71:25:ff:da:9f:92:b3:e2:f6:f2:39:7c (ECDSA)
No exact OS matches for host (If you know what OS is running on it, see
https://nmap.org/submit/ ).
TCP/IP fingerprint:
OS:SCAN(V=7.40%E=4%D=7/8%OT=53%CT=1%CU=33755%PV=N%DS=0%DC=L%G=Y%TM=5B4248E1
OS:%P=amd64-portbld-freebsd11.1)SEQ(SP=108%GCD=1%ISR=10D%TI=Z%CI=Z%TS=20)OP
OS:S(O1=M3FD8NW6ST11%O2=M3FD8NW6ST11%O3=M3FD8NW6NNT11%O4=M3FD8NW6ST11%O5=M3
OS:FD8NW6ST11%O6=M3FD8ST11)WIN(W1=FFFF%W2=FFFF%W3=FFFF%W4=FFFF%W5=FFFF%W6=F
OS:FFF)ECN(R=Y%DF=Y%T=40%W=FFFF%O=M3FD8NW6SLL%CC=Y%Q=)T1(R=Y%DF=Y%T=40%S=O%
OS:A=S+%F=AS%RD=0%Q=)T2(R=N)T3(R=Y%DF=Y%T=40%W=FFFF%S=O%A=S+%F=AS%O=M3FD8NW
OS:6ST11%RD=0%Q=)T4(R=Y%DF=Y%T=40%W=0%S=A%A=Z%F=R%O=%RD=0%Q=)T5(R=Y%DF=Y%T=
OS:40%W=0%S=Z%A=S+%F=AR%O=%RD=0%Q=)T6(R=Y%DF=Y%T=40%W=0%S=A%A=Z%F=R%O=%RD=0
OS:%Q=)T7(R=Y%DF=Y%T=40%W=0%S=Z%A=S+%F=AR%O=%RD=0%Q=)U1(R=Y%DF=N%T=40%IPL=3
OS:8%UN=0%RIPL=G%RID=G%RIPCK=Z%RUCK=G%RUD=G)IE(R=Y%DFI=S%T=40%CD=S)

Network Distance: 0 hops
Service Info: OS: FreeBSD; CPE: cpe:/o:freebsd:freebsd

OS and Service detection performed. Please report any incorrect results at
https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 111.11 seconds


-- 
:UNI><BSD:
Paulo Henrique.
Fone: (21) 37089388.
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