Debian / Ubuntu Linux HowTos and Guides

Tutorials, howtos, Q & A about GNU/Debian and Ubuntu Linux. Topic includes server security, installation, firewall, web-server, mail-server, proxy server and and much more. ( rss feed ).

How do I update all installed packages on Linux operating systems? How do I perform upgrading packages through a network on Linux operating systems?

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I am a new Linux user and created couple of groups on server. I need to find out all members of a group called “ftponly”. How do I list all members of a group on Linux or Unix-like systems?

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How do I restart named (Internet domain name server) from ISC using command line option under Debian or Ubuntu Linux server?

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The top and free command display the total amount of free and used physical and swap memory in the server. How do I determine which process is using swap space under Linux operating systems? How do I find out swap space usage of particular process such as memcached?

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I store all avi files on my Debian / Ubuntu powered Linux server. How do I convert all avi files and play on an iPhone using Linux command line options? How to play AVI files on an iPhone or iPod?

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How do I sort all *.avi or *.py files in $HOME/Download/ directory by file size using Linux ls command line utility?

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I recently installed Debian version 6.x on my Mac book pro. I wanted to write code in C/Gnome GTK and develop apps for fun and profit. How do I install C and Gnome gtk development environment under Debian or Ubuntu Linux operating systems?

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