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@omarkdev You could just simplify it to

wget -q --show-progress $(wget -q -O - https://gist.githubusercontent.com/viruscmd/5960adf1e5b5cf1e3d465dd3ad9e1aa8/raw/O\'Reilly%2520Free%2520Books)

The link is the most recent version. Also this command only requires wget and gives a better visual of progress.

dummy trap

These urls lead to 404 pages