If you’ve worked in Windows long enough, you have come across the .chm file format. This format is nothing more than a compressed html directory with an included index for easy viewing. Problem is, you can’t view these files in Linux without the help of another tool. And sometimes you want to be able view these files in another format.

The application I am referring to, is called KLook. That is “look” prefixed with a “K.” What KLook does, is give you the ability to view images, text files (.txt), listen to audio and play video files from one application in a slideshow fashion.

There are many ways to view files in GNU/Linux. One of the simplest command line tools for viewing files is cat. The cat command, short for concatenate, is actually intended for joining multiple files into one, but it works equally well for viewing text files.

One of the things you may find you want to do often from your command line is to view the contents of a text file. This could be to view the contents of some startup script or just one of your own basic configuration files like .bashrc or .bash_aliases. The command is simple to use.

Autotrash is a simple Python script which will purge files from your trash based on their age or the amount of free space left on the device. Using autotrash -d 30 will delete files which have been in the trash for more then 30 days. It uses the FreeDesktop.org Trash Info files included in the new GNOME system to find the correct files and the dates they where deleted.

If you want to open PDF files inside Firefox you need to install mozplugger.mozplugger allows you to seamlessly integrate external applications to view files downloaded from the web that Mozilla can not normally handle. The application is embedded within a Mozilla window as to act like and feel like a true plugin.

Translates pdf documents into html format.Translates pdf files into HTML or XML formats, combined with png images. Supports encrypted pdf files.There is a program called pdftohtml to convert pdf to html file.In ubuntu gutsy this package in bundled with poppler-utils so we need to install this package.

Today I'm going to show you how to use the head and tail commands to view portions of text files. There are, of course, other commands that can be used to view text files. The cat command can be useful for viewing small text files while more and less can be good for larger files. But what if you're only interested in just the beginning or the end of a file? That's where head and tail come in.

I’ve already shown you how to view files with the cat command. In today’s post I’m going to show you how to use the GNU cat command for its originally intended purpose: for joining multiple files together.