lescan is a minimalistic LE scanning utility based on the excellent gatt-python library.
gatt-python (and thus lescan) currently only supports Linux and BlueZ.
Install the latest distribution from Pypi:
pip3 install --user lescan
sudo apt-get install python3-dbus
The python3-dbus package is needed by python-gatt. Please refer to the python-gatt documentation for details.
Simply run lescan in your shell. lescan will pretty-print all received BLE advertisements.
lescan is released under the MIT license.