How Linux Works Quotes

“Another shell glob character, the question mark (?), instructs the shell to match exactly one arbitrary character. For example, b?at matches boat and brat.”
― Brian Ward, How Linux Works: What Every Superuser Should Know

“at* expands to all filenames that start with at. *at expands to all filenames that end with at. *at* expands to all filenames that contain at.”
― Brian Ward, How Linux Works: What Every Superuser Should Know

“You can use rm -rf dir to delete a directory and its contents, but be careful! This is one of the few commands that can do serious damage, especially if you run it as the superuser. The -r option specifies recursive delete to repeatedly delete everything inside dir, and -f forces the delete operation. Don’t use the -rf flags with globs such as a star (*). And above all, always double-check your command before you run it.”
― Brian Ward, How Linux Works: What Every Superuser Should Know

“There are many different Unix shells, but all derive several of their features from the Bourne shell (/bin/sh), a standard shell developed at Bell Labs for early versions of Unix. Every Unix system needs the Bourne shell in order to function correctly, as you will see throughout this book. Linux uses an enhanced version of the Bourne shell called bash or the “Bourne-again” shell. The bash shell is the default shell on most Linux distributions, and /bin/sh is normally a link to bash on a Linux system.”
― Brian Ward, How Linux Works: What Every Superuser Should Know

“To see an input stream at work, enter cat (with no filenames) and press ENTER. This time, you won’t get your shell prompt back because cat is still running. Now type anything and press ENTER at the end of each line. The cat command repeats any line that you type. Once you’re sufficiently bored, press CTRL-D on an empty line to terminate cat and return to the shell prompt.”
― Brian Ward, How Linux Works: What Every Superuser Should Know

“Unified Extensible Firmware Interface (UEFI)”
― Brian Ward, How Linux Works: What Every Superuser Should Know

“You can use rm -rf dir to delete a directory and its contents, but be careful! This is one of the few commands that can do serious damage, especially if you run it as the superuser. The -r option specifies recursive delete to repeatedly delete everything inside dir, and -f forces the delete operation.”
― Brian Ward, How Linux Works: What Every Superuser Should Know