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linux operating systems

Linux / FreeBSD: PDFCrack A Command Line Password Recovery Tool For PDF Files

I already written about howto remove a password from all PDF files under Ubuntu or any other Linux distribution in a batch mode. However, many user want a simple command to recover password from pdf files. This is useful if you forgotten your password for pdf file. It is also useful for data-archaeologists, computer forensics professionals, people who want to test their password-strength (pdf files generated by webpass) and many more.
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HowTo: Wake Up Computers Using Linux Command [ Wake-on-LAN ( WOL ) ]

Wake-on-LAN (WOL) is an Ethernet networking standard that allows a server to be turned on by a network message. You need to send 'magic packets' to wake-on-lan enabled ethernet adapters and motherboards, in order to switch on the called systems. Make sure you connect the NIC (eth0 or eth1) with the motherboard, and enable the WOL function in the BIOS. This is a quick guide to enable WOL under RHEL / Fedora / CentOS / Debian / Ubuntu Linux.
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Open Source Photography Software

I recently brought Canon EOS 500D mid-range DSLR cameras with good promotional discounts. My photography interests date back to my school days but I did not take photography seriously until recently. Now, I'm researching for quality open source photo-software which may be available to photographers. This blog post gives a quick and dirty view of the different photo applications available for Linux operating systems:
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Book: Ubuntu Kung Fu Tips, Tricks, Hints, and Hacks

In a few short years, the Linux operating system has gone from a hobbyist's power tool to a highly usable, mainstream choice. The most popular version of Linux these days is called Ubuntu. Ubuntu's rise to power has been rapid, historic and well-deserved. It's the best Linux distribution ever, still most people only use a fraction of its power.

In Ubuntu Kung Fu: Tips, Tricks, Hints, and Hacks (Pragmatic Bookshelf), award-winning Linux author Keir Thomas gets down and dirty with Ubuntu to provide over 300 concise tips that enhance productivity, avoid annoyances, and simply get the most from Ubuntu. You'll find many unique tips here that can't be found anywhere else. You'll also get a crash course in Ubuntu's flavor of system administration.

Whether you're new to Linux or an old hand, you'll find tips to make your day easier.

Ubuntu builds on a solid base of Debian Linux to create an award-winning operating system that's light-years ahead of its competitors. Ubuntu consistently tops lists of the most popular Linuxes amongst professionals and enthusiasts; Dell recently embraced Ubuntu in its product lines after a user survey indicated overwhelming public support.

Ubuntu Kung Fu provides hints, hacks, tweaks and tricks for every level of user. Its 300+ concise tips utilize and exploit hidden or lesser-known features to boost day-to-day productivity, and let you have more fun using Ubuntu.

You'll also find tips on tweaking Ubuntu, wrangling the system into shape, optimizing, enhancing security, and lots more. Learn what extraordinary things can be done with Ubuntu.

If you're migrating from Windows or Mac OS X, this book is for you. These tips have one aim -- to produce results as quickly as possible, in an environment where you can polish your skills as you read.

This is the Linux book for the rest of us.

About author

Keir Thomas is an award-winning author who has been writing about Linux, operating systems and computer hardware for more than a decade. Formerly a computer magazine journalist and editor, working on titles such as Linux User and Developer, Linux Magazine and PC Utilities, his other book titles include Beginning Ubuntu Linux, Third Edition; Beginning Fedora Linux; and Beginning SUSE Linux, Second Edition.

Book Info

  • Title: Ubuntu Kung Fu
  • Publisher: Pragmatic Bookshelf
  • Author: Keir Thomas
  • ISBN: 9781934356227, 400 pages, $34.95 USD, £21.99 GBP
  • Order Info: order@oreilly.com // 1-800-998-9938 // 1-707-827-7000
  • Support nixCraft order "Ubuntu Kung Fu" book online from Amazon

GNU Grub: A Beginners Guide And HowTo Collection

GNU Grub allows you to have several operating system on system and user can select one to start. Grub allows you to boot different kernels, operating system, floppy / cd boot and network boot. Dedoimedo.com has published article about how to setup and configure GRUB bootloader with multiple operating systems. This article is a compilation of sources and examples that will help you learn about GRUB. New Linux users will probably find the notion of spending hours searching for relevant pieces of information (especially if their PC won't boot) somewhat frustrating. The goal of this guide is to help provide simple and quick solutions to most common problems regarding multi-boot setups and installation of Linux operating systems:
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Sending Email With Attachments From Unix / Linux Command [ Shell Prompt ]

If you need to send an email with a text file (or binary file) as attachment using shell script or command prompt in Unix or Linux; try mutt - a terminal-based e-mail client for Unix-like systems.
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