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linux

Setup a DHCP server on Linux

December 15, 2010 Linux Jesin A Leave a Comment

linux category thumbnail

DHCP (Dynamic Host Configuration Protocol) is a service running on port number 67 which assigns IP addresses to computers in a network. Setting up a DHCP server requires you to specify a range of IP addresses which will be assigned to the computers on the network, a gateway address which is the address of the router or modem and a DNS server address which will be used to resolve hostnames. Doing this in Linux is a simple matter of installing an application and editing a .conf file.Continue Reading…

Tags: dhcp, linux

How to change the default runlevel in Linux

October 27, 2010 Linux Jesin A Leave a Comment

change default runlevel in linux

Linux has several runlevels which are different modes of operations of the Operating System. Each of the runlevel may be selected according to the user’s requirements. For example while installing device drivers it is recommended to be in single user mode. In fact runlevels are required for both shutdown and restart operations. After the installation of Linux Operating System using default settings the system directly starts in GUI mode. But many people prefer starting the command line terminal mode. Even though you can Ctrl+Alt+F1 at the GUI login screen and enter into terminal 1 its cooler and easier to directly startup with your desired runlevel. Change the default runlevel in linux by following the instructions below.Continue Reading…

Tags: linux, linux system files

Command to Display Directory Sizes in Linux

October 25, 2010 Linux Jesin A Leave a Comment

linux category thumbnail

Even though Linux has developed so much in terms of GUI which has become comparable to the latest Aero theme from Microsoft’s stables (especially in KDE environment) the command line becomes an inevitable tool for performing advanced administrative tasks like setting user quotas, compiling from the source to name it a few. But unlike the command line in windows, Linux command line works differently. A good example is showing the sizes of directories while listing the contents. The “ls” command in Linux shows a list of files and directories in the present directory but doesn’t show the sizes of directories and the file sizes are shown in bytes which makes it difficult to read and understand. So the correct command for this purpose is “du“Continue Reading…

Tags: linux, linux commands

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