Given a list of urls returns the unique query parameters appearing in them.
./urlparams name_of_file.txt
[l@l urlparams]$ wc -l gauairbnbsubs.txt
5723032 gauairbnbsubs.txt
[l@l urlparams]$ time ./urlparams gauairbnbsubs.txt
...
real 0m3.724s
user 0m3.642s
sys 0m0.081s