chkconfig command is used to start, stop and view the status of all services running on the system. It allows you to display and change the services on your system at all levels. Let us see some basic commands in this short how-to.
The “top” command provides a dynamic real-time view of a running system. It can display system summary information as well as a list of processes or threads currently being managed by the Linux kernel. The types of system summary information shown and the types, order and size of information displayed for processes are all user configurable and that configuration can […]
Have you ever wondered if there is a simple way to copy files and run commands on multiple machines from one command? Well there are several tools available that will allow us to do just that, but for starters we will discuss just pssh (Parallel SSH). pssh (Parallel SSH) pssh (Parallel SSH) is a command-line […]
LibreOffice 4.0 was recently released with many new features. Fedora 18 comes with 3.6 and does not have 4.0 available in the repositories for upgrading. So how do we get LibreOffice 4.0 installed on Fedora 18? Well that’s what we are going to discuss here. So here is how it is done. First we need […]
Tripwire is an open-source security and data integrity tool useful for monitoring and alerting on specific file change(s) on a range of systems. If any file gets modified or changed, it will send a alert to you. If the changes are valid, the you can accept the changes by updating the tripwire database. Install Tripwire On […]
SSHGuard is a fast and lightweight monitoring tool written in C language. It monitors and protects servers from brute force attacks using their logging activity. If someone continuously trying to access your server via SSH with many(may be four) unsuccessful attempts, the SSHGuard will block him/her for a bit by putting their IP address in […]
ClusterSSH is a Cluster administration tool via SSH. It is used to control number of xterm windows via a single graphical console window to allow commands to be interactively run on multiple servers over an SSH connection. If you’re are a Linux administrator managing hundreds of machines, you may have chances to enter same command on many […]
Sometimes there is just a need to monitor specific files or filesystems and perform actions or receive notifications, this is where incron can help. incron is for monitoring filesystem activity. It consists of a daemon and a table manipulator. You can use it a similar way as the regular cron. The difference is that the […]