HTG Explains: The Linux Directory Structure Explained If you’re coming from Windows, the Linux file system structure can seem particularly alien. The C:\ drive and drive letters are gone, replaced by a / and cryptic-sounding directories, most of which have three letter names. The Filesystem Hierarchy Standard (FHS) defines the structure of file systems on Linux and other UNIX-like operating systems. However, Linux file systems also contain some directories that aren’t yet defined by the standard. / – The Root Directory Everything on your Linux system is located under the / directory, known as the root directory. /bin – Essential User Binaries The /bin directory contains the essential user binaries (programs) that must be present when the system is mounted in single-user mode. /boot – Static Boot Files The /boot directory contains the files needed to boot the system – for example, the GRUB boot loader’s files and your Linux kernels are stored here. /cdrom – Historical Mount Point for CD-ROMs /dev – Device Files /etc – Configuration Files
30 Useful (and Unknown) Web Apps You Need to Bookmark - Page 2 FillAnyPDF FillAnyPDF is a fairly simple web app which allows you to upload a PDF file, then easily write on it wherever you want. This allows you to easily fill out any form, even if they’re not in an editable PDF form. Google Wave “What is Google Wave?” That was the question a lot of people asked when Google launched its email-replacement-slash-collaboration platform Wave, and to a large extent, the question remains unanswered. SpeedTest Everyone wonders sometimes why their ISP’s claim of Blazing Fast Internet doesn’t seem to translate to faster downloads or lower pings. Grooveshark What makes Grooveshark special enough that we recommend it over the dozens of other music streaming web apps? Vuvox Vuvox is a rich media creation app that allows you to quickly turn your photos and audio into a moving web collage. Keep reading for more great web apps!
Change the Windows 7 Login Screen Background Image When you login to your Windows 7 computer (assuming you haven’t used something like this tutorial to turn on automatic login), you’ll generally see a login window with a background looking something like this. It’s fine; there’s nothing wrong with it. But sometimes a change is good so in this article we’ll show you how to change the background image behind the login screen to anything you want. The first step is to open up the Start Menu by clicking the orb in the lower left corner of the screen. Now, in the Start Menu search box, type regedit, to open up the Registry Editor. When the Registry Editor appears in the Start Menu, click the Enter key to launch it. Now, right-click on the HKEY_LOCAL_MACHINE folder, and choose the Find option. The search window will appear so perform a search for OEMBackground. Note: it’s possible that OEMBackground doesn’t exist on your system; if this is the case, adding a new DWORD value with the name of OEMBackground will fix things.
Cool, but obscure unix tools :: KKovacs A little collection of cool unix terminal/console/curses tools Just a list of 20 (now 28) tools for the command line. Some are little-known, some are just too useful to miss, some are pure obscure -- I hope you find something useful that you weren't aware of yet! dstat & sar # iostat, vmstat, ifstat and much more in one. slurm # Visualizes network interface traffic over time. vim & emacs # The real programmers editors. screen, dtach, tmux, byobu # Keep your terminal sessions alive. multitail # See your log files in separate windows. tpp # Presentation (PowerPoint") tool for terminal. xargs & parallel # Executes tasks from input (even multithread). duplicity & rsyncrypto # Encrypting backup tools. nethack & slash'em # Still the most complex game on the planet. lftp # Does FTPS. ack, ag (silver searcher), pt # A better grep for source code. calcurse & remind + wyrd # Calendar systems. Command line RSS readers. powertop # Helps conserve power on Linux. tig # A console UI for git. qalc # The best calculator. rsync #
Mycenaean Greek Mycenaean Greek is the most ancient attested form of the Greek language, spoken on the Greek mainland, Crete and Cyprus in the 16th to 12th centuries BC, before the hypothesised Dorian invasion which was often cited as the terminus post quem for the coming of the Greek language to Greece. The language is preserved in inscriptions in Linear B, a script first attested on Crete before the 14th century BC. Most instances of these inscriptions are on clay tablets found in Knossos in central Crete, and in Pylos in the southwest of the Peloponnese. Other tablets have been found at Mycenae itself, Tiryns and Thebes and at Chania in Western Crete.[1] The language is named after Mycenae, one of the major centres of Mycenaean Greece. The tablets remained long undeciphered, and every conceivable language was suggested for them, until Michael Ventris deciphered the script in 1952 and by a preponderance of evidence proved the language to be an early form of Greek. Orthography[edit] Phonology[edit]
Upside-Down-Ternet My neighbours are stealing my wireless internet access. I could encrypt it or alternately I could have fun. I'm starting here by splitting the network into two parts, the trusted half and the untrusted half. The trusted half has one netblock, the untrusted a different netblock. We use the DHCP server to identify mac addresses to give out the relevant addresses. /etc/dhcpd.conf IPtables is Fun! Suddenly everything is kittens! /sbin/iptables -A PREROUTING -s 192.168.0.0/255.255.255.0 -p tcp -j DNAT --to-destination 64.111.96.38 For the uninitiated, this redirects all traffic to kittenwar. For more fun, we set iptables to forward everything to a transparent squid proxy running on port 80 on the machine. /sbin/iptables -A PREROUTING -s 192.168.0.0/255.255.255.0 -p tcp -m tcp --dport 80 -j DNAT --to-destination 192.168.0.1 That machine runs squid with a trivial redirector that downloads images, uses mogrify to turn them upside down and serves them out of its local webserver. The redirection script
Malicious Linux Commands - From (This article was originally published in Ubuntu Forums but was removed there. Ubuntuguide feels that knowledge about these risks is more important than any misguided attempts to "protect the public" by hiding their potential dangers or protect the (K)Ubuntu/Linux image. ATTENTION: It is worthwhile to have some basic awareness about malicious commands in Linux. It is also worthwhile to always enable a Kubuntu screensaver or Ubuntu screensaver with a password so that a casual passerby is not able to maliciously execute one of these commands from your keyboard while you are away from your computer. When in doubt as to the safety of a recommended procedure or command, it is best to verify the command's function from several sources, such as from readily available documentation on Linux commands (e.g. manpages). Here are some common examples of dangerous commands that should raise a red flag. Delete all files, delete current directory, or delete visible files in current directory rm -r or
GlassFish GlassFish is an open-source application server project started by Sun Microsystems for the Java EE platform and now sponsored by Oracle Corporation. The supported version is called Oracle GlassFish Server. GlassFish is free software, dual-licensed under two free software licences: the Common Development and Distribution License (CDDL) and the GNU General Public License (GPL) with the classpath exception. Overview[edit] GlassFish is the reference implementation of Java EE and as such supports Enterprise JavaBeans, JPA, JavaServer Faces, JMS, RMI, JavaServer Pages, servlets, etc. Built on a modular kernel powered by OSGi, GlassFish runs straight on top of the Apache Felix implementation. Releases[edit] Sun Microsystems launched the GlassFish project on 6 June 2005. On 8 May 2007 Project SailFin was announced at JavaOne as a sub-project under Project GlassFish. On 10 December 2009 GlassFish v3 was released. On 28 February 2011, Oracle Corporation released GlassFish v3.1. See also[edit]