FileNameExtrator.py is going to searching for all specified extension files from input path, and generate the files full path into a txt, csv, xls format file.
ubuntu /etc/apt/sources.list
#deb cdrom:[Ubuntu 18.04.2 LTS Bionic Beaver - Release amd64 (20190210)]/ bionic main restricted
See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
deb http://us.archive.ubuntu.com/ubuntu/ bionic main restricted
deb-src http://us.archive.ubuntu.com/ubuntu/ bionic main restricted
deb http://us.archive.ubuntu.com/ubuntu/ bionic-updates main restricted
deb-src http://us.archive.ubuntu.com/ubuntu/ bionic-updates main restricted
deb http://us.archive.ubuntu.com/ubuntu/ bionic universe
deb-src http://us.archive.ubuntu.com/ubuntu/ bionic universe
deb http://us.archive.ubuntu.com/ubuntu/ bionic-updates universe
deb-src http://us.archive.ubuntu.com/ubuntu/ bionic-updates universe
deb http://us.archive.ubuntu.com/ubuntu/ bionic multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ bionic multiverse
deb http://us.archive.ubuntu.com/ubuntu/ bionic-updates multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ bionic-updates multiverse
deb http://us.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse