January 2018
Intermediate to advanced
376 pages
8h 45m
English
Content preview from Mastering Linux Security and Hardening
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adduser on Debian/Ubuntu
The adduser utility is an interactive way to create user accounts and passwords with a single command, which is unique to the Debian family of Linux distros. Most of the default settings that are missing from the Debian implementation of useradd are already set for adduser. The only thing wrong with the default settings is that it creates user home directories with the wide-open 755 permissions value. Fortunately, that's easy to change. (We'll see how in just a bit.)
Although adduser is handy for just casual creation of user accounts, it doesn't offer the flexibility of useradd and it isn't suitable for use in shell scripting. One thing that adduser will do that useradd won't is to automatically encrypt a user's home ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.