Netcat
configuration → other_software → netcat → netcat

Implementations

The most popular implementations of netcat are:

While all serve the same purpose, they differ in feature richness.

netcat

Has a feature, that allows it to be used to execute a command with post data from STDIN. That makes netcat a good standalone server and more versatile than nc.

nc

port scan with nc

nc -z host.example.com 20-30

send a mail with nc

As copied from its man page:

nc localhost 25 << EOF
HELO host.example.com
MAIL FROM:<user@host.example.com>
RCPT TO:<user2@host.example.com>
DATA
Body of email.
.
QUIT
EOF
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