Quick shell commands to retrieve and download pdfs from a document containing online links.

copy-pdf.sh

# Strip URLs from a file (in this case, a markdown file called Notes.md)
# Append to a working file called link_list.txt
$ grep -o 'https://[^)]*.pdf' Notes.md > link_list.txt

# Download all pdfs from the list you created
$ wget -i ../links_list.txt

# You might have odd filenames, use rename to rename them
# Syntax:
$ rename [options] 's/old/new' files
# For example, the following will rename all .perl files to .pl
$ rename 's/perl/pl/' *.perl