To download all of the pdfs into the current directory: wget -r -np -nd -l 1 -A pdf https://math.mit.edu/~shor/435-LN/ (There might be more elegant ways, bu

To download all of the pdfs into the current directory: wget -r -np -nd -l 1 -A pdf https://math.mit.edu/~shor/435-LN/ (There might be more elegant ways, but this does the job.) -r, --recursive specify recursive download. -np, --no-parent don't ascend to the parent directory. -l, --level=NUMBER maximum recursion depth (inf or 0 for infinite). -A, --accept=LIST comma-separated list of accepted extensions. -nd, --no-directories Do not create a hierarchy of directories