8.- curl
This is a great command to work with the Internet, you will be able to download files, upload them as an FTP client, read Query HTTP Headers, POST sending,...
...but with this 7.58 (Android) version, only these protocols work: file https http
curl --version
curl --help
curl -I https://community.appinventor.mit.edu/
curl -o /mnt/sdcard/my_logo.png http://domain.com/image.png
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