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May 6, 2014

How to rename files recursively deleting white spaces in file names with shell script

GNU/Linux, Mac OSX, Operating Systems No Reply

Hi!

Today, I would like to share a small script (in shell) to rename files recursively but replacing white spaces in the files’ names. For this task I have only used standard commands in order to be sure this script will work on any GNU/Linux or UNIX-like operating system (mv, sed, find,..). Enjoy and personalize this script as you need!

Console-128

Most important lines are:

Which obtains all the files with .jpg extension starting from $path_to_images, and these other lines:

Which replace all white spaces for a dash “-“, in the current $file_name  and then by using the mv command the renaming operation is executed.

That’s it!

Be happy with your code!

April 20, 2014

“Error in exception handler” in first installation of Laravel framework – SOLVED

Laravel, PHP, Web Development 5 Replies

Last week, I started to learn how to Lavarel 4 works in order to compare it with other frameworks that I know like: CakePHP and CodeIgniter. First thing that I loved about Laravel is that it works with PHP Composer, that is a great point for Laravel.

laravel-logo

But well, after running my first installation of this framework I obtained and error, which I explain in following lines:

Problem

I was getting this error:

Sometimes the error you are looking for is hidden behind the scenes, so you will need to drill down to figure out what is the actual problem, that is so important: remember the right way to solve something is, first of all, knowing what you are trying to solve…

Trying to find the “real” problem to give a solution

  1. Go to  app/config/app.php
  2. Modify line to enable debug mode:  ‘debug’ => true,
  3. In my case there was a problem with permissions to create log files (laravel.log)

After that, I received a new exception:

This is clearly an error with permissions to write inside of app/storage/sessions, so a simple chmod command solved that.

You can find more information about Laravel error and logs in this link: http://laravel.com/docs/errors

And that’s it!

Be happy with your code!

April 20, 2014

Open directories with Sublime Text 2 using the command line (Mac OSX)

Mac OSX, Operating Systems 1 Reply

What about this: imagine if you could open your great Sublime Text 2 editor in a specific directory from the command line, well, today, I would like to share you the easiest way to configure that useful task in your Mac OSX. It is really simple, it just a matter of creating a symbolic link (a kind of direct access) to the subl executable.

Console-128

Next line do the task for you:

Once you have created the symbolic link, open a Terminal and run following command:

That’s it! Now you can open any directory using the command line.

 

April 10, 2014

How to check SHA1 digest in Mac OS X

Mac OSX, Operating Systems No Reply

Hi!
Today, I just want to share you an easy way to check the SHA1 digest using a the terminal in Mac OSX. This command is really useful when you need to know if any file -for example an ISO- was downloaded correctly.

Console-128

  • Step 1. Open a terminal.
  • Step 2. Type next command and wait for the digest

For example, I downloaded Kali Linux (the new distribution for penetration and security testing, :p)

  • Step 3. After running previous command, you will see:

That’s it!

Be happy with your SHA1 digest 🙂

April 10, 2014

How to allow publishing of JavaEE applications with “errors” in IBM Rational® Software Architect

Enterprise Development, IBM Web Content Manager, IBM WebSphere, Java EE No Reply

The problem

Sometimes, you are creating pieces of software with many tags in HTML, JavaScript or any other front-end language that IBM Rational® Software Architect doesn’t recognize, for example today I was publishing a theme for WebSphere Portal 8 and an error started to happen in the publishing operation, in a nutshell it was about my theme had some <div></div> tags and IBM Rational® Software Architect wasn’t able to mark them as valid.

java

Solution

If you are pretty sure your code is ok, and the error is just because IBM Rational® Software Architect doesn’t have support for some tags, then you will only need to say “Hey Rational allow me to publish my stuff!”,

  1. Go to menu Window > Preferences > Server > WebSphere Application Server
  2. Look for Allow applications containing errors to be published on a server
  3. See following image for more details about it:

allow-publishing-java-ee-applications-on-RAD

That’s it!

Be happy with your code!

April 9, 2014

CakePHP Database connection “Mysql” is missing, or could not be created in CakePHP Console SOLVED

CakePHP, Databases, Mac OSX, MySQL, Operating Systems, PHP, Web Development No Reply

Today, I spent some time helping a partner of mine trying to figure out how to enable and use the CakePHP console in Mac OS + XAMPP (Mac OS version of course), so, after searching on the internet what was going on, I realized there was a problem with the unix_socket for MySQL because Mac OS didn’t recognize this parameter automatically, so here is how I solved this issue, I hope this help you a lot.

Cake-logo

Problem

Solution (in Mac OSX + XAMPP)

Adding the MySQL socket  to YOUR_SITE/app/Config/database.php

This is how my database.php file looks like:

 

This is link to stack overflow where I found more details about it: http://stackoverflow.com/questions/19280245/cakephp-database-connection-mysql-is-missing-or-could-not-be-created

That’s it for today, remember: be happy with your code!

April 9, 2014

Session 5: jQuery for the real world (in spanish)

jQuery, Web Development No Reply

Do you wanted to know what’s Ajax? How to use it in your web applications? How this concept is related with frond-end development? Do you need to learn Ajax an apply it immediately? well, then this class is for you, it is the fifth class of one of my courses that you can see completely for free 😛 so, enjoy and share the video as many times as you want! and remember be happy with your code.

jQuery-para-el-mundo-real

In this video we will see:

  • What is actually Ajax?
  • How to use Ajax with jQuery and do you work easily
  • Minimal recommended parameters for $ajax function
  • $.ajax jQuery function
  • Consuming JSON data from CakePHP (backend)
April 8, 2014

Session 4: jQuery for the real world (in spanish)

jQuery, Web Development No Reply

So, are you looking for a good course to become a ninja in jQuery programming? well, start this course and at the end of it, you will understand this awesome library and you will be able to create front-end applications from scratch!

jQuery-para-el-mundo-real

This is the fourth session of this course, in this video you will learn:

  • What is a self invoking anonymous function and how to use it?
  • Using animate() function and its parameters
  • More about effects in jQuery

 

Visit the repository on Github to get all the code: https://github.com/alex-arriaga/jquery-para-el-mundo-real

March 30, 2014

How to compile Java programs by using command line

Enterprise Development, Java EE 1 Reply

So, do you need to compile your Java code using the command line? Don’t worry, just follow type command and it will be very easy!

java

  • -d: destination directory. In our example, the packages with bytecode will be generated into ./bin directory.
  • -classpath (-cp) : do we need any other library? In this case, we are adding servlet-api.jar library.
  • Last parameter indicates where are the *.java files.

Then, if we need to create a JAR file, we can follow these instructions: How to create a JAR file by using command line.

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Alex Arriaga
Alex is an experienced technology professional. Currently, he belongs to Base22; a family with a lot of awesome people!
He loves Computer Sciences and consider himself passionate about research and its application to any aspect of life.
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Join me, have fun and learn!

I believe that to change the world, all you need is a little creativity, programming skills, and like-minded friends who will read your blog and newsletter. Join me and we will do it together.
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Join me, have fun and learn!

I believe that to change the world, all you need is a little creativity, programming skills, and like-minded friends who will read your blog and newsletter. Join me and we will do it together.
* = required field

Day quote…

  • Science without religion is lame, religion without science is blind Albert Einstein

Join me, have fun and learn!

I believe that to change the world, all you need is a little creativity, programming skills, and like-minded friends who will read your blog and newsletter. Join me and we will do it together.
* = required field