OpenSSH options are controlled through the /etc/ssh/sshd_config file. This article explains the 7 default options in sshd_config file that you should change. In sshd_config, the lines that start with # are comments. For those options that uses the default values, the sshd_config file contains a commented line with the option and its default value. This [...]
May 2011
ext2, ext3 and ext4 are all filesystems created for Linux. This article explains the following: High level difference between these filesystems. How to create these filesystems. How to convert from one filesystem type to another. Ext2 Ext2 stands for second extended file system. It was introduced in 1993. Developed by Rémy Card. This was developed [...]
Anacron is the cron for desktops and laptops. Anacron does not expect the system to be running 24 x 7 like a server. When you want a background job to be executed automatically on a machine that is not running 24 x 7, you should use anacron. For example, if you have a backup script [...]
As we discussed in our Linux performance monitoring introduction article, measuring IO subsystem performance is very important. If someone is complaining that a database (or any application) running on one server (with certain filesystem, or RAID configuration) is running faster than the same database or application running on another server, you might want to make [...]