This chapter excerpt on Linux Administration (download PDF) is taken from the book The Accidental Administrator: Linux Server Step-by-Step Configuration Guide. Among the topics covered in this book ...

A vulnerability in the Linux sudo command has been discovered that could allow unprivileged users to execute commands as root. Thankfully, this vulnerability only works in non-standard configurations ...

Root (aka “/”) is where all other directories are found. If you issue the command ls /, the output will include directories like bin, boot, dev, home, etc, media, mnt, opt, sbin, srv, and var. The ...

These small utilities solved frustrations I didn't know I could avoid.

When I first started using Linux, there was no choice but to work with the root user. If you needed elevated permissions, you had to su to the root user and take care of things. Most modern Linux ...

Directories on Linux systems provide an easy and very convenient way to organize your files. In fact, depending on how you like to work, you can set up as many layers of directories within directories ...