Filesystems for every need!
FreeBSD includes many special-purpose filesystems. "FreeBSD Mastery: Specialty Filesystems" takes you through these filesystems, helping you solve problems you didn’t know you have. These filesystems underlie everything from application servers to jails.
System administrators will expand their FreeBSD mastery with "FreeBSD Mastery: Specialty Filesystems"
Online Backup you can Trust and Verify! Tarsnap, the secure online backup service for Unix-like systems, raised the bar for online backups. It’s inexpensive. It’s reliable. And you don’t need to trust the Tarsnap service—they can’t access your backups even if they wanted to. Tarsnap Mastery teaches everything you need to know to master Tarsnap!
If basic TCP/IP was hard, network administrators couldn’t do it. Servers give sysadmins a incredible visibility into the network—once they know how to unlock it. A systems administrator doesn’t need to know the innards of TCP/IP, but knowing enough to diagnose your own network issues will transforms a good sysadmin into a great one.
Unix-like operating systems have a primitive access control system. The root account can do anything. Other users are peasants with only minimal system access. Sudo lets you divide root’s monolithic power between the people who need it, with accountability and auditability.
While many people use sudo, most use only a small part of it’s features. Master sudo with Sudo Mastery.
DNS is one of the oldest protocols on the Internet, and was designed for a network without hostile users. Anyone who wants to break into a network starts by investigating the target's Domain Name Service. DNS Security Extensions, or DNSSEC, hardens DNS and brings it into the 21st century.