Global Linux Knowledge Base…
Archive for December, 2010
Linux Kernel Performance and Tuning with vm.swappiness
Dec 29th
vm.swappiness is a tunable kernel parameter that controls how much the kernel favors swap over RAM. At the source code level, it’s also defined as the tendency to steal mapped memory. A high swappiness value means that the kernel will be more apt to unmap mapped pages. A low swappiness value means the opposite, the kernel will be less apt to unmap mapped pages. In other words, the higher the vm.swappiness value, the more the system will swap.
Reset Forgotten MySQL Root Password
Dec 29th
mysqladmin utility from a command line to set the new password.
OpenOffice Tuning – Disable Splash Screen
Dec 29th
Start Open Office speedy. Disable Splash Screen of Open Office.
GRUB Password Setting in Linux
Dec 29th
You can set a password for the GRUB boot loader. This prevents users from rescue or Singe-User mode or changing settings at boot time.
Test Memory Using memtester in Linux
Dec 29th
memtester is a user-space utility for testing the memory subsystem in a computer to determine if it is faulty. It does a good job of finding intermittent faults and non-deterministic faults. It has many tests to help catch borderline memory. memtester should compile and run on any 32- or 64-bit Unix or Unix-like system.
OpenOffice Tuning – Make Startup Faster
Dec 29th
OpenOffice is the leading open-source office software suite for word processing, spreadsheets, presentations, graphics, databases and more. It is available in many languages and works on all common computers. It stores all your data in an international open standard format and can also read and write files from other common office software packages. It can be downloaded and used completely free of charge for any purpose.
Burn CD or DVD as a non-root user in Debian
Dec 29th
If you wish to allow non-root users to write CDs or DVDs, you must first give them permissions to do so.
Convert DEB to RPM or RPM to DEB Package
Dec 29th
You can convert DEB file to RPM package and RPM to DEB package using alien command, if you have a *.rpm file that you want to install on a Debian or Ubuntu.
Hard Drive Tuning with hdparm
Dec 24th
hdparm provides a command line interface to various kernel interfaces supported by the Linux SATA/PATA/SAS “libata” subsystem and the older IDE driver subsystem. Many newer (2008 and later) USB drive enclosures now also support “SAT” (SCSI-ATA Command Translation) and therefore may also work with hdparm.