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Recompile your kernel for a perfect fit

By Federico Kereki

After I wrote an article on optimizing disk performance, some readers commented that tweaking settings was just part of the job. They pointed out that you can get more speed if you also compile your kernel, adjusting it optimally for your specific hardware and needs. Compiling the kernel isn't the challenge it used to be; nowadays the process is streamlined, and you don't have to do much but pick your choices and key in some commands.

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Transfer files securely with SFTP

File Transfer Protocol (FTP) was once the most widely used protocol for transferring files between computers. However, because FTP sends authentication information and file contents over the wire unencrypted, it's not a secure way to communicate. Secure Copy (SCP) and the more robust SSH File Transfer Protocol (SFTP) address this security concern by providing data transfer over a fully encrypted channel. You can use these alternatives for transferring files securely over the Internet or any other untrusted network.

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Advanced SSH security tips and tricks

By Anže Vidmar

In this article I'll show you some simple tricks to help you tighten security for your secure shell (SSH) service.

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Handling RAR and 7-Zip archives in Linux

The RAR and 7-Zip file compression formats originated on Windows, so support for them on Linux is not as automatic as it is for old Unix holdovers like Gzip and TAR. But with the right software, you can handle these compressed files without much trouble.

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Vim tips: Using tabs

Before Vim 7.0 was released last May, I usually had six or seven xterms or Konsole windows open, each with a single Vim session in which I was editing a single file. This takes up a lot of screen space, and isn't very efficient. With Vim 7.0, users now have the option of using tabs within Vim. With Vim's tab features you can consolidate all your sessions into one window and move between files more easily.

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