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    • Restricted Shells

      Restricted Shells

      A restricted shell is a Unix shell that has been modified to allow the Unix shell user to do fewer things than a normal shell would allow him to do. It may allow the user to run only certain programs. It may stop the user from changing directories. Many sites run their own restricted shells

    • What is Tar?

      What is Tar?

      Tar refers to a tape archiving file format and the program that creates them. Tar stands for tape archive. It combines multiple files together so that they can be used for programs, applications, and critical system files. While Tar does not directly install files to a user’s hard drive, it is responsible for compiling the

    • How to List Unix Users

      How to List Unix Users

      List Logged In Unix Users Unix has many commands to list users who are logged in. These commands include ‘w,’ ‘who,’ and ‘users:’ $ w 9:51PM up 99 days, 5:39, 2 users, load averages: 0.83, 0.90, 0.90 USER TTY FROM LOGIN@ IDLE WHAT will p0 c-66-164-235-73. 8:11AM – w spencer p3 c-66-164-235-73. 8:26PM 1:24 pine

    • Where to Get a Unix Emulator

      Where to Get a Unix Emulator

      It is very useful to have a Unix emulator installed on your machine to serve as a tool for learning how to use Unix and getting used to its environment. Once you are familiar, you can go ahead and install a full version of Unix. The best Unix emulator for your needs is Cygwin (pronounced

    • How to Kill a Process in Unix

      How to Kill a Process in Unix

      A computer process is a computer program that is executing and has a unique process identification or PID. On the Unix Operating System (OS), a process may be running in the background, foreground, or be in a suspended state. On Unix, the OS shell will not return the prompt to the end-user until the current

    • How to Use the Grep Command

      How to Use the Grep Command

      The grep command is a search command built into a variety of Unix based operating systems. This command line utility, whose name stems from the original Unix term which means “search globally for lines matching the regular expression, and print them,” can be accessed using the command line or terminal from anywhere in the Unix

    • 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

    • 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

    • Configuring a Linux DHCP Server

      Configuring a Linux DHCP Server

      DHCP is the dynamic host configuration protocol. In other words, it describes how your computer is connected to networks. Assigning an IP address dynamically is a basic task assigned to DHCP along with domain name, name server, gateway, host name and net mask. DHCP can provide other information like time server and has a capability

    • How to Change a Hostname on Solaris

      How to Change a Hostname on Solaris

      Solaris makes it unreasonably difficult to change an installed server’s hostname. To change the hostname on a Solaris system, edit all of these files: /etc/hosts /etc/nodename /etc/hostname.* /etc/inet/ipnodes When file editing is complete, reboot the server to test the changes and ensure that they operate correctly. Note that changing the hostname only changes the name

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