Unix is a multi-user, multi-tasking operating system that was initially developed by Bell Labs in the 1970s. Various similar operating systems that are POSIX compliant (ie compatible with Unix) have since been developed (POSIX is an abbreviation for Portable Operating System Interface for UNIX). These include the following: the BSD family (OpenBSD, FreeBSD, NetBSD, Mac OS/X), Solaris, IRIX, AIX, SunOS, UnixWare, OpenServer and Linux.
Software written for POSIX compliant operating systems is generally able to be compiled for all POSIX platforms with little or no platform-specific changes. This makes the commands and utilities available for this extended family of operating systems very similar, and there are few differences between administering them.
The articles in this section are about useful command line utilities and commonly used application software on POSIX compliant operating systems. For Mac OSX specific articles see my OSX section.
One of the most basic tasks you’ll encounter is moving files and directories. Today, we’ll teach you how to do it. Using the “mv” command, you’ll move files and directories in no time. Whether you want to copy directory in Linux or move them, this article is for you! How to use the “mv” command …
What is the importance of learning how to add user to sudoers? For one, it’s to grant elevated access or permission to a user so that the user can carry unique functions that standard users would not have access to. These include sensitive tasks such as viewing the contents found in your root directory, for …
Learning how you can create a file in Linux is an essential skill to have, especially if you’re using Linux regularly. There are various ways and commands you can use to create a file in Linux. If you’re worried about the learning curve, don’t be. To create a file in Linux is a straightforward process, …
Does your code require repetitive tasks in your Linux or UNIX operating system? A “for loop” statement allows particular commands done continuously until a condition is met, or it becomes “false.” This programming language statement is an iteration of the loop within the bash script, thus its name, “bash for loop.” This is particularly useful …
Are you planning to rename files? Linux allows you to do that! If you’re using a Linux system, you’ve probably already tried renaming most, or at least some, of your files. After all, it’s one of the primary tasks you can do! You can either rename a file in Linux using its command-line terminal or …
If it’s your first time using Ubuntu, we highly recommend checking Ubuntu version updates and releases before diving into the system. Learning how to check Ubuntu version system updates is vital when you want to install additional programs or troubleshoot issues occurring in your system. If you’re running an outdated Ubuntu version, you could be …