Firstly, if not installed " requests , colorama , beautifulsoup4 " library
pip3 install beautifulsoup4 colorama requests
then...
git clone https://github.com/sadeceben/l1nk_3xtr4ct0r.git
after then...
cd l1nk_3xtr4ct0r && chmod +x se4rch.py
finally...
./se4rch.py {site_url}
Link Extractor extracts url from the webpage using its source code. Enter the web page url that you want to analyze. This tool then crawls urls from the web.