linux operating systems

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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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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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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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.

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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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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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