Diverses

Nicht an IP-Adresse gebundene Dienste

# sockstat | grep "\*:[0-9]\{1,5\}"

Alle IP-Adressen anzeigen

# ifconfig | grep "[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}" | awk '{ FS=" "; print $2" "$7" "$19; }'

Umleitung in der (t)csh

posix shells: # nc -v -w 1 192.168.1.2 1-2000 2>&1| grep -v "refused"
(t)csh:       # nc -v -w 1 192.168.1.2 1-2000 |& grep -v "refused"

WAN-IP-Adresse mit Hilfe von checkip.dyndns.org anzeigen

# printf "GET / HTTP/1.1\nHost: checkip.dyndns.org\n\n" | nc checkip.dyndns.org 80 | tail -n 1 | awk -F " " '{print $6}' | sed s/"\<\/body\>\<\/html\>"//

E-Mail über Netcat schreiben

# printf "ehlo example.com\nMail From:<anotheruser@example.com>\nRCPT To:<user@example.com>\ndata\nFrom: anotheruser@example.com\nTo: user@example.com\nSubject: Test\n\nTEST\n.\nquit\n" | netcat localhost 25