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Samenvatting belangrijke commando's CN2
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Samenvatting belangrijke commando's CN2
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dict -d fd-eng-nld "how are you" vertalen~ knop-option + N
| output als input volgende gebruiken
; meerdere commando’s samenvoegen
echo ‘some text’ > file1 maak bestand file1 → bevat ‘some text’
echo ‘some extra text’ >> file1 lijn bijvoegen in file1
pwgen > file random password genereren in file
ssh -p 22345 r0697468@leia.uclllabs.be inloggen op leia zonder key
ww: Peutie64
scp -P 22345 r0697468@leia.uclllabs.be:t.txt . file van leia → naar lokale machine kopiëren
scp -P 22345 bes.txt r0697468@leia.uclllabs.be:test file van lokale machine → naar leia kopiëren
scp -P 22345 hallo.txt bestand van lokale pc naar leia kopieren
r0697468@leia.uclllabs.be:/home/LDAP/r0697468/h
allo.txt
chmod [u,g,o] [+,-,=] [r,w,x] filenames permissions wijzigen
chmod u=rwx,g=rw,o=r file1.txt | chmod u=rwx,g=rwx,o=rwx file3.txt
grep [options] ‘pattern’ [file] zoekt patroon in bestand
print lijnen met patroon
-v → toont niet matchende lines for pattern
touch $(date +"%Y.%m.%d").test2 bestand aanmaken met datum in naam
cut -d “ “ -f3,4,4 cut → selecteert columns van file
-d → specificeert scheidingsteken
date | cut -d " " -f3,4,5 > date.txt -f → column nummer
awk ‘{print $kolomnummer}’ [file] awk → print $n kolom van file
ls -l | awk ‘{print $kolomnummer}’
tr -s ' ' vervang teken dat meermaals voorkomt door 1X
tr -s ' teken' (vervang meerdere spaties door 1)
ls /map | xargs command loop → voor elke lijn van input → commando
cat todelete.txt | xargs rm uitvoeren
for foo in $(ls /home/ldapusers); do touch $foo; done andere manier loop → als xargs niet beschikbaar
ls | while read foo; do echo $foo; done while loop
find [path] [expression] zoeken in file hiërarchie
sort -r [file] sorteer file
- r → reverse alfabetisch
, 2>/dev/null foutboodschappen weglaten
ssh-keygen key genereren (id_rsa.pub)
in ~/.ssh op pc lokaal
kopieer deze key naar destination
~/.ssh/authorized_keys op leia
ssh user@leia.uclllabs.be -p 22345 -i met id_rsa.pub bestand inloggen
"/path/to/your grandmothers identity_file"
ssh leia Host leia
HostName leia.uclllabs.be
Port 22345
User r1234567
In config op eigen pc zetten
who Kijken op leia wie ingelogd
inloggen op leia Chatten via netcat
nc -l 12000 = poort naar keuze
!venster laten open staan
!tweede venster openen
nc leia.uclllabs.be 12000
tshark -D lijst van all netwerk interfaces die je kan capteren
tshark -P -i en0 -w catture.pcap -F pcaap -c 2 saving capture
-i → capture interface
-w → output file
-F → file format
-c → max aantal pakketten om te lezen
-P → schrijft gegevens naar bestand & toont
pakketoverzicht in terminal
tshark -r [input file] eerder opgeslagen bestand lezen
tshark -r [file] -V -Y ‘frame.number == $number’ toont een enkel pakket
-V → om details weer te geven van pakket
tshark -r [file] -O ‘dns’ -Y ‘frame.number == $number’ -O → details van specifiek protocol
tshark -r [file] -Y ‘filter’ Filtering captures
tshark -r [file] -Y ‘http.response.code == 404’
tshark -i en0 -Y http.request -T fields -e http.host -e extracting van frame data
http.user_agent -T → specieferen dat we velden willen bekijken
-e → specifieren we welke velden
tshark -G fields | grep ‘[\t]zoek\..*’ geeft lijst mogelijke velden
tshark -G fields | grep ‘[\t]ftp\..*’
tshark -G | grep “zoek\.” geeft lijst van mogelijke filters
tshark -G | grep “http\.”
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