Outside of spn.sh (and as an alternative to running wget --spider...), URLs can be saved to Wayback Machine like this: >$ cat urls.txt | xargs -d "\n" sh -c 'for args do echo $args; curl -s -m 60 -X POST --data-urlencode url="$args" -d "if_not_archived_within=157680000" -H "Accept: application/json" -H "Authorization: LOW api:key" https://web.archive.org/save/; echo; sleep 50; done' _ IA/WBM API key at https://archive.org/account/s3.php - save IA API key to ~/iakey.txt then replace "api:key" with this: >$(head -n1 ~/iakey.txt):$(tail -n1 ~/iakey.txt) More info: https://archive.org/developers/ias3.html
However, when running the above "cat urls.txt..." today got this error which I think is about remote memory usage: >{"exception":"Command # 1 (LLEN spn2-api) of pipeline caused error: command not allowed when used memory > 'maxmemory'.","message":"Cannot start capture","status":"error","status_ext":"error:celery"} - Celery? I don't even like celery.