Using nice to control CPU usage

Managing tasks that use up a lot of CPU time can be quite a task and if you're working in a shared environment where you don't want to be antisocial and use all the available resources, it can be necessary to manage the tasks you are running to ensure you are being nice.

And nice is exactly the command you need to use for this purpose. What it ...

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Command line tip - peek into the start and end of files

Sometimes, especially when dealing with log files, you might want to peek at the start and/or end of a file to see just that bit of the file and not the whole thing. Of course, there are a couple of easy commands that allow you to do this.

The commands are head and tail and work with almost any Unix-like operating system.

As the name suggests, head is for ...

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Use scp to securely transfer files

OpenSSH is a great tool for remotely logging in to other computers in a secure manner and then being able to use them from anywhere around the world. What the ssh command doesn't offer you normally however is a way to securely transfer files between your local machine and the remote machine.

That's where scp comes in. It stands for Secure Copy and piggybacks off the SSH infrastructure ...

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