This is the list of the most useful Firefox keyboard shortcuts. It is amazing how much more efficient you can be when your not always reaching for your mouse. Controlling Tabs New Tab – Ctrl+T Close Tab – Ctrl+W or Ctrl+F4 Next Tab – Ctrl+Tab or Ctrl+PageDown Previous Tab – Ctrl+Shft+Tab or Ctrl+PageUp Select Tab [...]

You might need to reinstall the boot loader to the master boot record (MBR) if it becomes corrupted or erased. This can occur for example if Windows is installed on another partition which overwrites the MBR. There are two ways to reinstall grub, automatically using grub-install, and manually through grub itself. grub-install is a script [...]

As a security measure the ext3 file system reserves 5% of device space for administrative processes. This protects the system by allowing root processes to continue using the disk if a user process runs wild and fills it up. With today’s larger disk capacities, 5% equates into gigabytes of arguably wasted space. Thankfully with the [...]

In Firefox 3 it is easy to edit the MIME settings. These settings are used to control what program is used by default to open each file type you encounter while browsing. To edit these settings in Firefox 3 navigate these menus: Edit -> Preferences -> Applications For each file type on the left you [...]

The standard way to create a Windows boot disk is to have access to a Windows system. If you have access to a Linux system instead, and know a couple tricks, you can create boot disk as well. The first thing to do is find a website that has the boot disks available for download. [...]

You can find the MAC address of your system at the command line by using the ifconfig command. The ifconfig command will show you information on all your network interfaces. If no arguments are given ifconfig displays the status of the currently active interfaces. You have to run this command as root or use sudo. [...]

You can find the IP address of your system at the command line by using the ifconfig command. The ifconfig command will show you information on all your network interfaces. If no arguments are given ifconfig displays the status of the currently active interfaces. You have to run this command as root or use sudo. [...]

The ext3 file system forces an fsck once it has been mounted a certain number of times. By default this maximum mount count is usually set between 20-30. On many systems such as laptops which can be rebooted quite often this can quickly become a problem. To turn off this checking you can use the [...]

The LD_LIBRARY_PATH environment variable contains a colon separated list of paths that the linker uses to resolve library dependencies of ELF executables at run-time. These paths will be given priority over the standard library paths /lib and /usr/lib. The standard paths will still be searched, but only after the list of paths in LD_LIBRARY_PATH has [...]

For backwards compatibility, many Linux distributions support both the older LinuxThreads implementation as well as the newer Native POSIX Thread Library (NPTL). By setting the LD_ASSUME_KERNEL environment variable you can tell the dynamic linker to assume that it is running on top of a particular kernel version. This will override the dynamic linker’s default choice [...]