In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning. Code words in the text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "To begin installing DFF, we first need to update the sources.list with the repository used in Kali Sana."

A block of code is set as follows:

deb http://http.kali.org/kali kali-rolling main contrib non-free
deb src http://http.kali.org/kali kali-rolling main contrib non-free
deb http://http.kali.org/kali sana main contrib 

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

deb http://http.kali.org/kali kali-rolling main contrib non-free
deb src http://http.kali.org/kali kali-rolling main contrib non-free
deb http://http.kali.org/kali sana main contrib 

Any command-line input or output is written as follows:

dc3dd if=/dev/sdb hash=sha1 log=dd_split_usb ofsz=500M ofs=split_test_usb.img.ooo

New terms and important words are shown in bold.