A command-line utility that scans for Wi-Fi networks using the 802.11 netlink API and outputs the scan results in PCAP format.

# Install pre-requisites
sudo apt update
sudo apt install git libnl-genl-3-dev libpcap-dev

# Download, build, and install scandump
git clone https://github.com/intuitibits/scandump.git
cd scandump
make
sudo make install

Usage: scandump <interface> <filename>
       scandump --version

Where <interface> is the name of the WLAN interface (e.g. wlan0), and <filename> is the name of the PCAP file to be generated. Standard output is used if filename is -.

The command must be run as root since only privileged processes can initiate a scan.

Scan for Wi-Fi networks on wlan0 and save the scan results to scan.pcap:

$ sudo scandump wlan0 scan.pcap

Scan for Wi-Fi networks on wlan0 and output the scan results to standard output in PCAP format:

$ sudo scandump wlan0 -