Generally, all Linux distributions needs a scheduled reboot once to stay up to date with important kernel security updates. RHN (or other distro vendors) provides Linux kernel security updates. You can apply kernel updates using yum command or apt-get command line options. After each upgrade you need to reboot the server. Ksplice service allows you to skip reboot step and apply hotfixes to kernel without rebooting the server. In this post, I will cover a quick installation of Ksplice for RHEL 5.x and try to find out if service is worth every penny.
Looks nice but this hack is not for the faint hearted!
Old Gateway PC transformed into a Linux server with embedded display, which is a hacked portable B&W TV driven directly by the VGA card.
Explains how to activate / open VMware Server Remote Console plugin with Firefox 3.0.1 under Linux.
Explains how to display multilingual text such as hindi, chinese, japanese, korean etc text on the console using framebuffer, and bterm applications under Fedora / RHEL / CentOS / Debian / Ubuntu Linux.
Reverse order files while sorting and play with mplayer multimedia player.
The open source journal has published an interesting hack. It mostly applies to high-end, multiple-disk storage:
Under the right conditions (that is, with certain hardware configurations which I’ll identify later) it is possible to literally double your sequential read performance from disk. If you noticed the terrible performance of the 3Ware 9500S RAID controller and cared enough to investigate. It all has to do with a sneaky little block device parameter known as readahead. Without going into too much gory detail, readahead controls how much in advance the operating system reads when, well, reading, as its name implies. By default, some operating systems (in particular, RHEL5 Server) sets this to 256 (512-byte sectors), or about 128 KB. When dealing with large filesystems spanning many disks, this paltry figure can actually nuke your performance.
=> HowTo: Linux: Double your disk read performance in a single command
This is a nice hack and a small how to about controlling Amarok media player:
Ever since Iâ€™ve received my new phone, bluetooth has excited me. To be honest, the notion of being able to control my pc from the phone was the exciting aspect. Ever wondered how to do this? Let me elaborate.
(Image Source: Authors blog)
=> Control Amarok with Bluetooth