#perl script

[shinigamishinto]

#!/usr/bin/perl -s -w

my $nice; my $that;

if ($that == $nice){ print "Ooh, that's nice!"; } exit

[shinigamishinto]

Perl Scripting

Word search and count

[neok0projects]

Astrology - perl script update.

The script finds distances, midpoints and aspects between 2 given objects, i posted this earlier. I added to it. It can now handle the input of minutes and seconds other than zero and give sanitized and rounded off minutes and seconds in the results. Now it knows Chiron Lilith North-Node South-Node Ascendant Midheaven, it recognizes the quindecile aspect and it displays zodiac sign quality, element and polarity. If an object in its given zodiac sign is ruler, exalted, detriment or fall the script will report so.  In the screenshot you can see the script executed and outputting results in the Terminal.

Formatting is not ideal but meh. You can get the script here: http://zanussi.combell.org/astrology_tool.html

[pearlsphere-nebular]

Sometimes, I wish I was a programmer....

[l457-60d-blog]

logic code test..

[cdw-blog]

Executing Perl script from jEE Spring project

Lately I had to execute a Perl script from java project and I want to share my experience with you. It might be useful in your future projects as it was for me in this particular work. I based my job on usage of WWW::Mechanize library for automating interaction with websites. There were some issues to run Perl from java project, but I managed to deal with them in my own way. And that way of mine I want to share with today in this small article.

Problems:

Where to put your perl script file in javaEE Spring project.

Define absolute path to your script.

Define correct bash command.

Turn on the logs to log the messages at the debug level.

Define a process.

How to use Runtime to execute your script. 

How to log message from output and error stream of the process.

First of all you have to decide where to store your perl script files. I chose the location where I keep my resources (src/main/resources). This location is added to classpath by default. The output files will be in target/classes folder.

Here is entry from eclipse project .classpath file:

<classpathentry excluding="**" including="**/*.java" kind="src" output="target/classes" path="src/main/resources"/>

I used ResourceLoader method from org.springframework.core.io library to get resource from a specified classpath:

Resource resource = resourceLoader.getResource("classpath:/perl/myScript.pl");

If I have the resource I can specify an absolute path to it:

String absolutePath = resource.getFile().getAbsolutePath();

  At this moment absolute path looks something like this: ../target/classes/perl/myScript.pl

Next step is to define bash command which is used to run the script. In terminal to execute we have to type: perl myScript.pl parameter1 parameter2 …

We have to define this command as a string:

String bashCommand = "perl " + absolutePath + " " + parameter;

  If perl is not defined in your system classpath you have to define absolute path for it f.e.:

/usr/bin/perl

  So the command string can look like this:

String bashCommand = "/usr/bin/perl " + absolutePath + " " + parameter;

  At this moment we have ready-to-use command as a string, so we can trigger a script using Runtime.exec().

But wait! What if the script is not working correctly or even it does not work at all? What if we run the script and nothing happens?

To obtain the information about what the script is doing, we can define a process:

 Process process = Runtime.getRuntime().exec(bashCommand);

  “ Runtime.exec method create a native process and return an instance of a subclass of Process that can be used to control the process and obtain information about it. The class Process provides methods for performing input from the process, performing output to the process, waiting for the process to complete, checking the exit status of the process, and destroying (killing) the process.” [1]

  At this moment we can get information about the process:

Input stream of the subprocess obtains data from the standard output stream of the process

process.getInputStream()

 Error stream of the subprocess obtains data from the error output stream of the process

process.getErrorStream()

  To log the messages we have to define logger:

Logger LOG = LoggerFactory.getLogger(MyService.class); LOG.debug(IOUtils.toString(process.getInputStream())); LOG.debug(IOUtils.toString(process.getErrorStream()));

  In order to log messages at the debug level we have to turn it on in the configuration file.I have my configuration in log4j.xml:

<logger name="your.package.name">    <level value="DEBUG" />    <appender-ref ref="debug" /> </logger>

To trigger the script I used a controller method. To run it I have to put the url address in my web browser: http://myhost/runPerlScript/parameter

//Controller @RequestMapping(value = "/runPerlScript/{parameter}") public void runPerlScript(@PathVariable String parameter) {                    myService.runPerlScript(parameter);                 }

  And that’s all folks! Now when you trigger your service method, your program will run and you will see the output messages.

When your script is not working for some reason, you can easily find a solution by going through all the errors that will be listed.

Java source code:

//Service import org.apache.commons.io.IOUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.core.io.Resource; import org.springframework.core.io.ResourceLoader; import org.springframework.stereotype.Service; @Service public class MyService {        private Logger LOG = LoggerFactory.getLogger(MyService.class);        @Autowired        private ResourceLoader resourceLoader;        public void runPerlScript(String parameter) {               try {                       Resource resource =                       resourceLoader.getResource("classpath:/perl/myScript.pl");                       String absolutePath = resource.getFile().getAbsolutePath();                       String bashCommand = "perl " + absolutePath + " " + parameter;                       Process process = Runtime.getRuntime().exec(bashCommand);                       process.waitFor();

                      LOG.debug(IOUtils.toString(process.getInputStream()));                       LOG.debug(IOUtils.toString(process.getErrorStream()));

              } catch (Exception e) {

                      // TODO Auto-generated catch block                       e.printStackTrace();               }         } } //Controller @RequestMapping(value = "/runPerlScript/{parameter}") public void runPerlScript(@PathVariable String parameter) {

       myService.runPerlScript(parameter);        }

References and notes: [1] JavaDoc

by L.Wartalski

edited P.Chaberski

[milindmk]

RSS Feed to Update Twitter Status using

Amplify’d from eitwebguru.com

RSS Feed to Update Twitter Status using Perl Script with OAuth Part-II (Installation of Perl Modules, writing perl script and Integrating it with OAuth)

RSS Feed to Update Twitter Status using Perl Script with OAuth Part-II (Installation of Perl Modules, writing perl script and Integrating it with OAuth)

Read more at eitwebguru.com

_ In previous article “RSS Feed to Update Twitter Status using Perl Script with OAuth Part-I (Registration of Twitter Application)” we have learn to register a twitter application and today I am going to tell how to use that application to update your twitter status with the help of a Perl Script which will fetch data from a RSS Feed.

This tutorial is divided in following sub parts or sections 1) Installation of Perl Modules. 2) Installation and understanding of per script. 3) Enabling Keys and setting up cronjob.

1) Installation of Perl Modules

To execute the perl script we need some Perl Modules to be installed on the server. Following is the list of modules which should be available on the server

Read more at eitwebguru.com

 See this Amp at http://amplify.com/u/btvur

[milindmk]

Untitled

Amplify’d from eitwebguru.com

RSS Feed to Update Twitter Status using Perl Script with OAuth Part-I (Registration of Twitter Application)

Filed Under (Perl, Script, Social Network, twitter) by Milind on 07-03-2011

Every blogger or the person who is connected with Internet to get latest news, updates, informations etc. knows the importance of RSS Feeds. RSS (Really Simple Syndication) is a family of web feed formats used to publish frequently updated works on blog or on websites. Users subscribe to their favorite blogs or news websites so they will be intimated as soon as those blogs or news websites are being updated and a new content or post has been published.

Recently I started working on a Social News bookmarking website i.e. http://sitemarks.in which fetch news from various websites and publishes it on its page for which I have used Hotaru CMS and some of its plugins. Now I want to publish the news on my Twitter accounts so all the news which are fetched by the site will be published on twitter so that my twitter account follower can check those news and there are N number of websites which to perform this task but whats so interesting about that????

So I decided to build something to perform above task using PHP First and searched on Google (As I am not good it scripting but I like to test and implement various scripts). After a long search I found abraham-twitteroauth beta which was working fine for me but due to some problems I thought is that possible to do same task using Perl?? I discussed this with my friend who is expert in Perl Scripting and he assured me that its possible. So I will explain how to post updates of RSS Feeds to Twitter using Perl Script. This complete Tutorial will be divided in to two Parts and they are:

RSS Feed to Update Twitter Status using Perl Script with OAuth Part-I (Registration of Twitter Application)

RSS Feed to Update Twitter Status using Perl Script with OAuth Part-II (Installation of Perl Modules, writing perl script and Integrating it with OAuth)

Registration of Twitter Application

Read more at eitwebguru.com

 See this Amp at http://amplify.com/u/btdd4