https://www.digitalocean.com/community/tutorials/how-to-configure-proft…

https://www.ncftp.com/ncftpd/doc/misc/ftp_and_firewalls.html
http://slacksite.com/other/ftp.html

script errado - https://www.cyberciti.biz/faq/iptables-passive-ftp-is-not-working/

listar utilizadores com sessão inicada na máquina:
qwinsta

resultado:

C:\Documents and Settings\professor1>qwinsta
SESSIONNAME USERNAME ID STATE TYPE DEVICE
console 0 Conn wdcon
rdp-tcp 65536 Escutar rdpwd
>rdp-tcp#8 professor1 1 Ativo rdpwd
prof1 2 Disco rdpwd

parted /dev/sda align-check optimal 1

1 trillion UUIDs would have to be created every nanosecond for 10 billion years to exhaust the number of UUIDs.

https://towardsdatascience.com/are-uuids-really-unique-57eb80fc2a87
https://liquidat.wordpress.com/2007/10/15/short-tip-get-uuid-of-hard-di…

https://askubuntu.com/a/657303

https://wiki.archlinux.org/index.php/Multiboot_USB_drive

no servidor temos 2 hdd de 2 TB ligados a portas sata e 1 ssd samsung 970 evo nvme M.2 (2280) de 250 GB ligado ao barramento pcie.

a ideia é utilizar os dois hdds num raid nível 1 por software com o mdadm, com os discos encriptados e deteção de erros ao nível do bloco (integridade assegurada por dm-integrity) e o ssd como cache destes.

https://opensource.com/article/18/4/ext4-filesystem

https://www.reddit.com/r/linux/comments/bytul5/excellent_read_btrfs_vs_…

https://www.unixsheikh.com/articles/battle-testing-data-integrity-verif…

https://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInt…