Linux / Unix Desktop Fun: Text Mode ASCII-art Box and Comment Drawing

Posted on in Categories Linux, Linux desktop last updated June 11, 2012

Boxes command is a text filter and a little known tool that can draw any kind of ASCII art box around its input text or code for fun and profit. You can quickly create email signatures, or create regional comments in any programming language. This command was intended to be used with the vim text editor, but can be tied to any text editor which supports filters, as well as from the command line as a standalone tool.

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

Posted on in Categories FreeBSD, Linux, Linux desktop, Security last updated June 6, 2012

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.

Linux debugfs Hack: Undelete Files

Posted on in Categories Linux last updated May 3, 2012

Undeletion means restoring files which have been deleted from Linux ext3 file system using rm command. Deleted files can be recovered on ext3 file systems using the debugfs program. This quick tutorial describes how to recover a file that was recently deleted using nothing but standard Linux command line utilities.

Debian / Ubuntu Linux: Configure Network Bonding [ Teaming / Aggregating NIC ]

Posted on in Categories Debian Linux, Ubuntu Linux last updated September 4, 2011

NIC teaming is nothing but combining or aggregating multiple network connections in parallel. This is done to increase throughput, and to provide redundancy in case one of the links fails or Ethernet card fails. The Linux kernel comes with the bounding driver for aggregating multiple network interfaces into a single logical interface called bond0. In this tutorial, I will explain how to setup bonding under Debian Linux server to aggregate multiple Ethernet devices into a single link, to get higher data rates and link failover.

How To Tail (View) Multiple Files on UNIX / Linux Console

Posted on in Categories data center, Debian Linux, Download of the day, fedora linux, File system, FreeBSD, Gentoo Linux, GNU/Open source, Howto, Linux, Linux Log Management, Monitoring, package management, RedHat/Fedora Linux, Suse Linux, Sys admin, Tip of the day, UNIX last updated February 9, 2009

The tail command is one of the best tool to view log files in a real time using tail -f /path/to/log.file syntax on a Unix-like systems. The program MultiTail lets you view one or multiple files like the original tail program. The difference is that it creates multiple windows on your console (with ncurses). This is one of those dream come true program for UNIX sys admin job. You can browse through several log files at once and do various operations like search for errors and more.

How To Convert From a VMware Image To Virtualbox Image

Posted on in Categories GNU/Open source, Hardware, Howto, Linux, Linux desktop, Linux distribution, Linux Virtualization, package management, Tips, vmware, Windows, windows vista last updated December 22, 2008

VirtualBox is a virtual emulator like VMWare workstation. It has many of the features VMWare has, as well as some of its own.

I really like new Opensource VirtualBox from Sun. It is light on resources. Here is a quick tip – you can convert a VMware virtual machine (image) to a VirtualBox machine (image) using qemu-img utility, without reinstalling the GUEST operating system

Debian GNU/Linux 4.0 Update 6 Released

Posted on in Categories Debian Linux, Linux distribution, Security, Security Alert last updated December 18, 2008

Didn’t take long to release new updated version.

The Debian project is pleased to announce the sixth update of its stable distribution Debian GNU/Linux 4.0 (codename “etch”). This update mainly adds corrections for security problems to the stable release, along with a few adjustment to serious problems. This update has been rated as having important security impact. You are advised to upgrade system ASAP.