Notes
Formatted equivalent of date -Im:
date +'%Y-%m-%dT%H:%M%:z'
Extract page range with qpdf:
$ qpdf infile.pdf --pages infile.pdf 1-10 -- output.pdf
Systemd Cache Flushing
sudo systemd-resolve --flush-caches
Check stats:
sudo systemd-resolve --statistics
Tachyons Development Kit
Storing Passwords
hash and salt