All the Best Linux Cheat Sheets
Linux Security Quick Reference Guide - An awesome security checklist reference IP Tables - If you are interested in Linux firewalls this is a must have TCPDump - Great cheat sheet to an awesome security tool Wireshark Filters - An awesome list of filters for the best packet sniffing utility IP Access Lists - Cheat sheet for IP Access Lists Common Ports - In case you don’t have all common ports memorized netcat - Reference to the swiss army knife of networking
Cool, but obscure unix tools :: Software architect Kristof Kovacs
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! Use your operating system's package manager to install most of them. (Thanks for the tips, everybody!) 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.
Linux tips every geek should know
What separates average Linux users from the super-geeks? Simple: years spent learning the kinds of hacks, tricks, tips and techniques that turn long jobs into a moment's work. If you want to get up to speed without having to put in all that leg-work, we've rounded up over 50 easy-to-learn Linux tips to help you work smarter and get the most from your computer. Enjoy! UPDATE: If these tips aren't enough and you want even more, make sure you check out More Linux tips every geek should know! #1: Check processes not run by you Difficulty: Expert Application: bash Imagine the scene - you get yourself ready for a quick round of Crack Attack against a colleague at the office, only to find the game drags to a halt just as you're about to beat your uppity subordinate - what could be happening to make your machine so slow? OK, let's list all the processes on the box not being run by you! ps aux | grep -v `whoami` Or, to be a little more clever, why not just list the top ten time-wasters: find . reset
Debian Linux Tutorial - Beginners Guide To Linux Servers and Networking Installation and Set Up with Instructions On How To Configure A Home Server
How To Setup Asterisk@Home
How to set-up a simple, IP-based PBX (private branch exchange) Have you ever wanted one of those nifty office telephone systems? You know, with extensions, your very own receptionist, voicemail for every cubicle, an intercom system and all the other bells and whistles. Unfortunately, a typical office PBX (private branch exchange) that would provide those features costs thousands of dollars to get up and running - and that's one of the cheaper solutions. What if you could do almost as much for virtually nothing? The final result will be your very own IP-based PBX that will allow anyone on your LAN (if authorized) to be given a telephone extension and voicemail inbox, make and receive calls from within or without your LAN - with nothing but a VoIP line, a microphone and a pair of headphones. Ready to begin? What you'll need Finally, you'll need any VoIP provider that supports SIP termination or IAX/IAX2 protocols (these can be extremely cheap). We used this as our server.
Learn Linux, 101: A roadmap for LPIC-1
About this series This series of articles helps you learn Linux system administration tasks. The topics mirror those of the Linux Professional Institute Certification (LPIC) level 1 (LPIC-1) exams. You can use the articles to prepare for certification, or just to learn about Linux. There are two exams for LPIC-1 certification: exam 101 and exam 102, and you must pass both to attain LPIC-1 certification. Each exam has several topics, and each topic has several objectives. The material in these articles corresponds to the April 2009 objectives for exam 101 and exam 102 You should always refer to the objectives for the definitive requirements. This roadmap is in progress; as we complete articles, we add them to the roadmap. Note: New material will be added over the coming months as it becomes available. Exam 101 Exam 101 - Topic 101: System architecture Where are the articles? Back to top Exam 101 - Topic 102: Linux installation and package management Exam 101 - Topic 103: GNU and UNIX commands
Basics of Linux system administration: Setting up your system and software
1. Before you begin You need a working Linux system that includes the bash shell, so you can practice the commands and techniques covered in this knowledge path. Our command examples are taken from Ubuntu and Fedora, but they apply to most other Linux distributions as well. 2. A well-organized hard drive is an efficient hard drive, but only if you plan your layout with the system's purpose in mind. 3. Dig your spurs in and get to know the boot process and the two most common boot loaders, LILO and GRUB, including how they work, how to configure them, and how to recover from common issues. 4. Dynamic linking has huge advantages for minimizing the size of executables, but it can also cause headaches if prerequisite libraries aren't there. 5. Master the fundamentals of APT, the Advanced Packaging Tool used by Debian, Ubuntu, and other popular distributions. 6. Give us feedback Submission failed. Please complete one of the following questions before submitting. Thank you for your feedback.
Ch03 : Linux Networking
Now that you have a firm grasp of many of the most commonly used networking concepts, it is time to apply them to the configuration of your server. Some of these activities are automatically covered during a Linux installation, but you will often find yourself having to know how to modify these initial settings whenever you need to move your server to another network, add a new network interface card or use an alternative means of connecting to the Internet. In Chapter 2, "Introduction to Networking", we started with an explanation of TCP/IP, so we'll start this Linux networking chapter with a discussion on how to configure the IP address of your server. You need to know all the steps needed to configure IP addresses on a NIC card. This section shows you how to do the most common server IP activities with the least amount of headaches. Determining Your IP Address Most modern PCs come with an Ethernet port. Changing Your IP Address The "up" at the end of the command activates the interface.
