nc

A versatile utility for redirecting IO into a network stream. More information: <https://manned.org/man/nc.1>.

Install

All systems
curl cmd.cat/nc.sh
Arch Arch Linux
pacman -S nmap-ncat-2
CentOS
yum install nc
Fedora
dnf install nmap-ncat-2
OS X
brew install nmap-ncat-2

A versatile utility for redirecting IO into a network stream. More information: <https://manned.org/man/nc.1>.

  • Start a listener on the specified TCP port and send a file into it:
    nc -l -p port < filename
  • Connect to a target listener on the specified port and receive a file from it:
    nc host port > received_filename
  • Scan the open TCP ports of a specified host:
    nc -v -z -w timeout_in_seconds host start_port-end_port
  • Start a listener on the specified TCP port and provide your local shell access to the connected party (this is dangerous and can be abused):
    nc -l -p port -e shell_executable
  • Connect to a target listener and provide your local shell access to the remote party (this is dangerous and can be abused):
    nc host port -e shell_executable
  • Act as a proxy and forward data from a local TCP port to the given remote host:
    nc -l -p local_port | nc host remote_port
  • Send an HTTP GET request:
    echo -e "GET / HTTP/1.1\nHost: host\n\n" | nc host 80

© tl;dr; authors and contributors