Primeiro, descubra onde cryptroot
é, que pacote fornece cryptroot
e o que mais (origem, documentação, exemplos, ...) está no pacote. Assim:
walt@squid:~(0)$ locate cryptroot
/usr/share/initramfs-tools/hooks/cryptroot
/usr/share/initramfs-tools/scripts/local-top/cryptroot
walt@squid:~(0)$ dpkg -S !$
dpkg -S cryptroot
cryptsetup: /usr/share/initramfs-tools/hooks/cryptroot
cryptsetup: /usr/share/initramfs-tools/scripts/local-top/cryptroot
walt@squid:~(0)$ dpkg -L cryptsetup
...