This repository contains various C++ implementations of Unix-like commands and shell programs developed as part of a system programming course using Linux. These programs demonstrate low-level system ...

For Linux users, the command line is a celebrated part of our entire experience. Unlike other popular operating systems, where the command line is a scary proposition for all but the most experienced ...

AWK is a pattern-scanning and processing language that searches one or more files for records (usually lines) that match specified patterns. It processes lines by performing actions, such as writing ...

We suggest the following structure for the outer input loop (codified in msh_main.c). Instead of using non-blocking wait (with waitpid(pid, &status, WNOHANG), you can instead of SIGCHLD to receive ...

This article is reprinted from the book A Practical Guide to Linux Commands, Editors, and Shell Programming 3rd edition, with permission of the author and publisher ...

Linux built-ins are commands that are built into the shell, much like shelves that are built into a wall. You won’t find them as stand-alone files the way standard Linux commands are stored in ...

While many desktop Linux distributions provide an easy-to-use graphical user interface, there are times when you must perform certain work-related or system administration tasks using old-fashioned ...