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    • Unix Signals

      Unix Signals

      A signal is a message that can be sent to a running process. Programs, users, or administrators can initiate signals. For example, the proper method of telling the Internet Daemon (inetd) to re-read its configuration file is to send it a SIGHUP signal. For example, if the current process ID (PID) of inetd is 4140,

    • How to Uninstall Ubuntu

      How to Uninstall Ubuntu

      Most often, when uninstalling Ubuntu–the most widely used version of Linux–what the person is done is replacing it with Windows. Therefore, to uninstall Ubuntu and therefore replace it with Windows, one must format the partition during the installation of Windows. This way, the space that was once Ubuntu goes to the Windows’ needs. When this

    • How to Use the Unix Find Command

      How to Use the Unix Find Command

      The Unix find command, as the name implies, is a command that you can enter into the command line, or terminal, of a Unix operating system, allowing you to process any given set of files or directories. It is a highly useful command that you can take advantage of on Unix based operating system, making

    • The History of UNIX

      The History of UNIX

      UNIX is one of the most important operating systems ever developed. What made Unix stand out in the crowd of countless other operating systems is that it was a competent operating system that was extremely affordable and worked on low cost hardware. Economics definitely played a large part in UNIX’s popularity and today it is

    • How to Use the Unix Sort Command

      How to Use the Unix Sort Command

      The Unix sort command is a command for the Unix family of operating systems. It is designed to sort whatever information you give it. The command can be used for a variety of purposes, but it is most frequently employed when there are a number of different files which need to be ordered in some

    • LinuxCAD


      CAD programs can be an exciting and helpful tool when designing blueprints for a house, vehicle, or electrical circuit. One of these programs is the popular LinuxCAD software that allows you to edit and create a number of blueprints and schematics under the Linux operating system. LinuxCAD comes with many features that other CAD programs

    • How to Change an IP Address on Solaris

      How to Change an IP Address on Solaris

      To change an IP address on a Solaris system immediately, use the `ifconfig` command. The syntax for `ifconfig` is: ifconfig <interface> <ip address> <netmask> <broadcast address> If the user does not know his/her network interface names, he/she should use the `ifconfig -a` command to list all of the available network interfaces. Permanently Change an IP

    • How to Use vi

      How to Use vi

      The vi editor (visual editor) is one of the oldest and more popular text editors on computers running the Unix Operating System (OS). The vi editor can be used from any computer terminal interfacing with a computer running Unix, since the editor relies on the standard alphabet keys for specific commands. Since vi is not

    • Where to Download Unix

      Where to Download Unix

      Free derivatives of Unix can be easily downloaded via the Internet. This sets Unix apart from other proprietary operating systems like Microsoft Windows. The different Unix versions and Unix-like operating systems available for download include FreeBSD, OpenBSD, Red Hat Fedora Linux, Debian Linux, Ubuntu Linux, and Sun Solaris. Those who are new to Unix or

    • Linux Restricted Shell

      Linux Restricted Shell

      The idea of a restricted shell first arose in the Unix operating system in order to prevent the end-user from doing as many operations as a normal shell allows. A restricted shell lets the administrator control the end-user’s computing environment by only permitting explicitly used commands to be used. The Linux restricted shell (rssh) is

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