Tuesday, March 29, 2011

10 tips on working fast in UNIX or Linux


10 tips for working fast in UNIX
fast unix command tutorial and tipsHave you ever amazed to see someone working very fast in UNIX, firing commands and doing things in mille seconds? Yes I have seen and I have always inspired to learn from those gems of guys. This article or tutorial or whatever you call it I have dedicated to share UNIX command practices I follow to work fast, quick or efficiently in UNIX. I work for financial services industry and my work involves development and support of online stock and futures trading application in Electronic trading, Derivatives etc. all our services runs of UNIX servers so its very important for me to work efficiently and quickly in Linux machine.

This article is in continuation of my earlier article Top 10 basic networking Commands in Unix  and Top 10 most useful CVS command in Unix  and 10 examples of using find command in UNIX .

Friday, March 18, 2011

10 Example of find command in Unix and Linux

find command is one of the versatile command in UNIX and Linux  and I used it a lot in my day to day work. I believe having knowledge of find command in UNIX and understanding of its different usage will increase your productivity a lot in UNIX. If your works involve lots of searching stuff on Linux machine or if you are a java or C++ programmer and your code resides in UNIX, find command can greatly help you to look for any word inside your source file in the absence of an IDE, It is the alternative way of searching things in UNIX. grep is another Linux command which provides similar functionality like find but in my opinion later is much more powerful than grep in UNIX. Like any  other command strength of find is lies in its various options, which is worth learning, but to be frank hard to remember. If you can even able to remember all options mentioned in this article, you will be taking more advantage of find, than average developers and Linux users. If you love to read books,  you can also take a look at  A Practical Guide to Linux Commands, Editors, and Shell Programming (2nd Edition) By Mark G. Sobell, a great book and must read for any system administrator, security guy or developers, who works in UNIX based environment. It not only teaches about find and grep, but also several useful commands, which probably gone unnoticed by many of us

By the way, I have been sharing my experience on Unix and Linux command and its different options, usage and example and this article is in continuation of my earlier post like How to convert IP address to hostname in Linux . If you are new here you may find those tips useful for your day 2 day development and support work.

Saturday, March 5, 2011

Top 20 FIX Protocol Interview Questions


Top 20 FIX Protocol Interview Questions
its' been a while since I shared FIX protocol interview questions. So here is the new set of top 20 FIX protocol interview questions. These are the question which is mostly asked in while interviewing any developer or support professional which has some knowledge of FIX protocol. Given the number of clients, broker and exchange using FIX protocol it’s really a great thing to have in your resume and can land you some very well paying jobs in street. These questions not only serve as quick reference before heading for a FIX protocol job interview but also opens new path of learning for guys who are new in FIX and trying to understand it.

Thursday, March 3, 2011

10 Singleton Pattern Interview questions in Java - Answered

Singleton pattern in Java is one of the most common patterns available and it’s also used heavily in core Java libraries. Questions from Singleton pattern is very common in Java interviews and good knowledge of how to implement Singleton pattern certainly help.This is also one of my favorite design pattern interview question and has lots of interesting follow-up to dig into details , this not only check the knowledge of design pattern but also check coding, multithreading aspect which is very important while working for a real life application.  In this post  have listed some of the most common question asked on Singleton pattern during a Java Interview. I have not provided the answers of these questions as they are easily available via google search but if you guys need I can try to  modify this tutorial to include answers as well. As promised earlier and having received lot of request for providing answers of these question, I have decided to update this post along with answers. By the way if you are preparing for interview on Java technology than you can check my collection on Java interview questions and  multi-threading interview questions. There are lot of resources in Javarevisited which can help you in your interview preparation. On the other hand if you are more interested on design pattern tutorials than you can check my post on builder design pattern and decorator pattern.