Poll: Your Favorite Scripting Language?

Posted on in Categories Ask nixCraft, C Programming, Linux, Perl, php, Poll, programming, python, Shell scripting, Sys admin, UNIX last updated April 22, 2009

Like most sys admin, I’m lazy. I try to automate almost all things in order to save time. Inexperienced sys admin and help desk staff working under me finds all these tools useful. It saves their time and avoids security issues. Automation allows help desk staff to do things that they don’t have enough direct system knowledge to do themselves. However, selecting correct tool and applying correct methodology is very important.

Note: There is a poll embedded within this post, please visit the site to participate in this post’s poll.

Apache2 mod_fastcgi: Connect to External PHP via UNIX Socket or TCP/IP Port

Posted on in Categories Apache, CentOS, fedora linux, Howto, lighttpd, Networking, php, RedHat/Fedora Linux, Security, Tips, Troubleshooting, Tuning last updated December 30, 2008

Now, mod_fastcgi is configured and running. FastCGI supports connection via UNIX sockets or TCP/IP networking. This is useful to spread load among various backends. For example, php will be severed from 192.168.1.10 and python / ruby on rails will be severed from 192.168.1.11. This is only possible with mod_fastcgi.

Linux / UNIX: Geany Lightweight Integrated Development Environment

Posted on in Categories C Programming, CentOS, Debian Linux, Gentoo Linux, Gnome, Linux desktop, Open source coding, RedHat/Fedora Linux last updated July 9, 2008

Geany is cross platform (UNIX/Windows/BSD) fast, powerful, easy to use integrated development environment for PHP, Java, C and much more. If you wanted to quickly edit source code, Geany is for you. Here’s an introduction to using Geany’s built-in features, including the IDE and built-in development capabilities.

scapy – Interactive Packet Manipulation / Generation Tool for Linux / UNIX

Posted on in Categories Debian Linux, Hardware, Linux, Security, Ubuntu Linux, UNIX last updated January 28, 2008

Recently I started to play with scapy – a powerful interactive packet manipulation and custom packet generation program written using Python. Please note that this tool is not for a new Linux / UNIX users. This tool requires extensive knowledge of network protocols, packets, layers and other hardcore networking concepts. This tool is extermly useful for
a] Understanding network headers
b] Testing network security
c] Write your own utilities using scapy
d] Decoding protocols etc

From the man page:

You can use this tool to check the security of your own network as it allows to forge or decode packets of a wide number of protocols, send them on the wire, capture them, match requests and replies, and much more. It can easily handle most classical tasks like scanning, tracerouting, probing, unit tests, attacks or network discovery. It also performs very well at a lot of other specific tasks that most other tools can’t handle, like sending invalid frames, injecting your own 802.11 frames, combining technics such as VLAN hopping+ARP cache poisoning, VOIP decoding on WEP encrypted channel, etc.

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Download of the day: Bazaar Distributed Version Control System

Posted on in Categories Download of the day, Links, Linux, Linux distribution, Open source coding, Save money with FOSS, Ubuntu Linux last updated December 15, 2007

Canonical Ltd the creator of Ubuntu Linux has released a new software called Bazaar. It is a distributed version control system available under the GPL that reduces barriers to participation in your project. If you can run Python 2.4, then you can run Bazaar.

There are many really good VCS tools such as Subversion and Git. Bazaar is a decentralized revision control system. Revision control involves keeping track of changes in software source code or similar information, and helping people work on it in teams.Bazaar features
=> Reliable
=> Ease of use
=> Portable software (Works on *nix / Windows)
=> Flexible
=> GPL Code
=> Good performance
=> Safe with your data etc

The program is simple to deploy. It doesn’t require a dedicated server. Any Web server that includes ftp will work as a Bazaar server. Canonical also states that because developers can commit their code locally whenever they want, they’re less dependent on the central code base.

Download Bazaar VCS

=> Visit project home page to download Bazaar Distributed Version Control Software

Linux / UNIX: Python programming tutorial for system administrators

Posted on in Categories Beyond nixCraft, Howto, Linux, Sys admin, Tips, UNIX last updated September 6, 2007

Generally I use Perl and Shell script for automation or to make system administration easier for me. Python is an interpreted, interactive, object-oriented programming language that combines remarkable power with very clear syntax. Python runs on Windows, Linux/Unix, Mac OS X, OS/2, Amiga, Palm Handhelds, and Nokia mobile phones.

You can easily adopt Python to manage UNIX and Linux systems while incorporating concepts of good program design. Python is an easy-to-learn, open source scripting language that lets system administrators do their job more quickly. It can also make tasks more fun:

As a system administrator, you run across numerous challenges and problems. Managing users, disk space, processes, devices, and backups can cause many system administrators to lose their hair, good humor, or sanity. Shell scripts can help, but they often have frustrating limitations. This is where a full-featured scripting language, such as Python, can turn a tedious task into an easy and, dare I say it, fun one.

The examples in this article demonstrate different Python features that you can put to practical use. If you work through them, you’ll be well on your way to understanding the power of Python.

=> Python for system administrators