Monthly Archives: April 2010
e2fsck command
The e2fsck command is used to check the second extended file system (E2FS) of a Linux computer. Syntax: e2fsck [options] Where, is the file name of a mounted storage device (for example, /dev/hda1). Several options are used with the e2fsck … Continue reading
ifconfig – Ubantu Commands
IFCONFIG is a command-line tool, which is used for network interface management. Following are some of the options used with the command: up: This option is used to activate the specified interface. down: This option is used to deactivate the … Continue reading
Multi Router Traffic Grapher (MRTG)
The Multi Router Traffic Grapher (MRTG) is free software for monitoring and measuring the traffic load on network links. It allows the user to see traffic load on a network over time in graphical form. MRTG is written in Perl … Continue reading
LILO Bootloader – Full Tutorial
Linux Loader (LILO) is the default boot loader (boot manager) for most Linux systems. It is used to boot a computer into Linux. LILO provides many tools for troubleshooting booting issues. It also allows a dual boot of the Linux … Continue reading
What is lsattr command?
lsattr is a command line program for listing the attributes on a Linux second extended file system (ext2). It is also a command to display attributes of devices on an AIX operating system. It displays the following attributes: don’t update … Continue reading
How to Pass RH253 Exam?
The Red Hat Network services and security Administration test measures an individual’s actual ability to install, configure, and attach a new Red Hat Linux system to an existing production network. Before taking the RH253 certification exam, you should practice the … Continue reading
What is strace command?
strace is a debugging command in Linux to monitor the system calls used by a program and all the signals it receives, similar to truss command in other Unix systems. The most common usage is to start a program using … Continue reading
How to add swap partition after installation in Linux?
To add a swap partition in hard disk /dev/hdb2, use the following steps: 1. If hard drive cannot be in use (partitions cannot be mounted, and the swap space cannot be enabled), then the easiest way to add swap partition … Continue reading
Password Crackers – Full Tutorial
A password cracker is an application program that is used to identify an unknown or forgotten password to a computer or network resources. It can also be used to help a human cracker obtain unauthorized access to resources. Password crackers … Continue reading
User Administration in a Red Hat-Based Network – Full Tutorial
Introduction: In Red Hat Enterprise Linux system administration, User Administration has an important role. Creating accounts, removing accounts, changing passwords, creating groups, and helping users figure out why they can’t access network resources is what User Administration is all about. … Continue reading
