Using traceroute

If you're trying to diagnose a misbehaving network or you're just plain curious about what machines handle your requests to the internet, you might be interested in a tool called traceroute.

The traceroute tool is built into almost all Linux systems, and if it doesn't ship by default you can usually install it by simply heading to your package manager and finding the traceroute package.

It's ...

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Set a password on the GRUB boot loader

If you're security conscious (like me) and you've got a Linux system or a dual boot system, or in fact, any setup where you've got a GRUB boot loader installed, you may well be aware that you can pass kernel arguments to the Linux kernel from the GRUB menu.

What does this mean? Well, a kernel argument instructs the kernel to do something different when it boots ...

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Speed up application launches with prelink

Application start up times can be annoying if they are really really slow. Part of this latency is a process where before the executable can run, the OS needs to work out which libraries it needs to kick into action.

This process of working out the right libraries can take maybe even several seconds on slower machines and complex apps and can be a big source of slowdowns on application ...

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