How to save all internal links of a site?

Question

Parsing

Hello. Help me please.
It is necessary to save all site links starting with - https://www.forexfactory.com/showthread.php?t=
into a text file. I found an example, but how to apply it...

wget -q https://www.forexfactory.com -O - | \
    tr "\t\r\n'" '   "' | \
    grep -i -o '<a[^>]\+href[ ]*=[ \t]*"\(ht\|f\)tps\?:[^"]\+"' | \
    sed -e 's/^.*"\([^"]\+\)".*$/\1/g'