The installation steps are quiet simple. OK, before installing the VirtualBox package you must have an idea about it. What is VirtualBox ? What does it mean ? Of-course, It is time that you knew about it! We can simply…
Linux
Steps to install Rkhunter(Rootkit hunter) on server – Linux
Before starting the Rkhunter installation we must have an idea about the ‘Rootkit’. A rootkit is a stealthy type of software, typically malicious, designed to hide the existence of certain processes or programs from normal methods of detection and enable…
How/Command to change the login shell for a user – Unix/Linux
We have already discussed one method to change the login shell of a user by changing the shell value in /etc/passwd file by using the command USERMOD. Shell is a program that takes your commands from the keyboard and gives…
10+ ‘rpm’ command usages with examples – Unix/Linux
RPM – Red Hat Package Manager. RPM is the package manager for Linux system. The ‘rpm’ command is used to install, manage, uninstall packages from server/system. Here I am explaining some common usages of the ‘rpm’ command with example: 1,…
How/Command to check the previously executed command’s status(success or not) – Unix/Linux
In some strange situations it would be more helpful for us to find the previously executed command’s status(success or not). We can figure it out by using the following command; # echo $? Output: 0 : The ‘0’ represents, successfully…
How/command to find out the current shell – Unix/Linux
Shell is a program that takes your commands from the keyboard and gives them to the operating system to perform. Some common types of shells are listed below: > /bin/bash > /bin/ksh > /bin/csh > /bin/sh > /sbin/nologin etc… How/command…
How to change/set the default runlevel – Unix/Linux
The runlevel is specified in the /etc/inittab file. Different runlevels and details are listed below: 0 – halt (Do NOT set initdefault to this) 1 – Single user mode 2 – Multiuser, without NFS (The same as 3, if you…