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  • How can I test whether a csv file is currently open and being written to - the file, not a file hand

    - by Henry
    I've seen a few questions/answers here that deal with this, but none really give me an answer/solution. I've got a Clipper system writing csv files to a Windows directory. I have a perl script running on a Linux server that is reading a mount of that Windows directory and importing the files to a database. Right now we're using flag files to indicate when a csv is no longer being written to; the flag files gets written after the csv is done. I'd really rather just get what I need from the csv itself, but I can't seem to find a way to tell when the file is open and being written to. lsof doesn't seem to answer my need. I've tried using flock and open the file with an exclusive lock, thinking it might throw an error if the file is being modified, but it doesn't. Any thoughts?

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  • Ant build scripts totally hangs, with no messages in console

    - by voipsecuritydigest.com
    I have build.xml for my project, but even this small piece of code <target name="init"> <tstamp/> <!-- Create the build directory structure used by compile --> <mkdir dir="${build}"/> </target> It doesn't run Console is empty but process is active. I still can terminate it over STOP button In same time I cannot debug it as well, same stuff active process no output in console and I can wait forever! Any ideas? JDK 1.6.0_14 Eclipse 3.5.1

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  • What is the preferred method of accessing WWW::Mechanize responses?

    - by sid_com
    Hello! Are both of these versions OK or is one of them to prefer? #!/usr/bin/env perl use strict; use warnings; use WWW::Mechanize; my $mech = WWW::Mechanize->new(); my $content; # 1 $mech->get( 'http://www.kernel.org' ); $content = $mech->content; say $content; # 2 my $res = $mech->get( 'http://www.kernel.org' ); $content = $res->content; say $content;

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  • ERB doesnt get executed in javascript scripts

    - by Stefano
    Hi guys I have a select input on my page. this select input displays/hides fields in the form. This all works fine. But the problem is that if i submit the form and lack some necessary fields, it doesnt set the select to the right value afterwards. I just cant get the embedded ruby to work! it keeps escaping the whole thing... here my code: $(document).ready(function() { $("#profile_sex").val('<%= @profile.sex %>') $("#profile_sex").change(function(){ ($(this).val() == "Frau") ? $('#form-female').show() : $('#form-female').hide(); ($(this).val() == "Mann") ? $('#form-male').show() : $('#form-male').hide(); if ($(this).val() == "Paar") { $('#form-female').show(); $('#form-male').show(); } }); }); why doesnt this work??? I dont get any error or anything it just sets the value to "<%= @profile.sex =" I was googling and searching about on stack overflow and railscasts, the rails API, everything. Im seriously confused... thanks for your help.

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  • inspect the parameters to "use", and pass on the rest?

    - by JoelFan
    I have a Perl module and I'd like to be able to pick out the parameters that my my module's user passed in the "use" call. Whichever ones I don't recognize I'd like to pass on. I tried to do this by overriding the "import" method but I'm not having much luck. EDIT: To clarify, as it is, I can use my module like this: use MyModule qw/foo bar/; which will import the foo and bar methods of MyModule. But I want to be able to say: use MyModule qw/foo doSpecialStuff bar/; and look for doSpecialStuff to check if I need to do some special stuff at the beginning of the program, then pass qw/foo bar/ to the Exporter's import

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  • make script output link to code in Visual Studio

    - by JoelFan
    I sometimes need to search code for patterns in a way that goes beyond the regex capabilities of Visual Studio (e.g. patterns that depend on what was seen previously in the file or on the contents of other files). So I use Perl to analyze the source and output matching lines, along with the file name and line number. Since this is the exact same format as is produced by the search feature of Visual Studio, I wonder if there is a way to duplicate the functionality where I can double-click on a line and it will display that line in context in Visual Studio. Any ideas?

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  • What's the benefit of calling new on an object instance?

    - by Geo
    I'm reading [Programming Perl][1], and I found this code snippet: sub new { my $invocant = shift; my $class = ref($invocant) || $invocant; my $self = { color => "bay", legs => 4, owner => undef, @_, # Override previous attributes }; return bless $self, $class; } With constructors like this one, what's the benefit of calling new on an object instance? I assume that it's what it's for, right? My guess is that if anyone would want to write such a constructor, he would have to add some more code that copies the attributes of the first object to the one about to be created.

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  • What is the right way to stop an infinite while-loop with a Term::ReadLine-readline?

    - by sid_com
    What is the right way to stop an endless while-loop with a Term::ReadLine::readline? This way I can not read in a single 0 #!/usr/bin/env perl use warnings; use strict; use 5.010; use Term::ReadLine; my $term = Term::ReadLine->new( 'Text' ); my $content; while ( 1 ) { my $con = $term->readline( 'input: ' ); last if not $con; $content .= "$con\n"; } say $content; and with last if not defined $con; the loop does never end.

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  • Ant build scripts

    - by gomathi
    I am using ant script for generating war file, it will generate the war file. please see the below script If it generates a new war file, then i want to have a property to set the value as "newupdates" otherwise i want to know "noupdates"

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  • How to run system-commands in the background?

    - by sid_com
    #!/usr/bin/env perl use warnings; use strict; use 5.012; use IPC::System::Simple qw(system); system( 'xterm', '-geometry', '80x25-5-5', '-bg', 'green', '&' ); say "Hello"; say "World"; I tried this to run the xterm-command in the background, but it doesn't work: No absolute path found for shell: & What would be the right way to make it work?

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  • C# CodeDom - making project's forms accessible for scripts.

    - by michal
    Hi, I'm learning CodeDom scripting, I started with http://www.c-sharpcorner.com/uploadfile/mgold/codedomcalculator08082005003253am/codedomcalculator.aspx Now I'd like to allow script modify the project's form (for learning purposes only). I suppose I need to create new field for a class I'm generating which refers "this". However I have no idea how can I set a reference for script-accessible object ... ? Or can I directly publish some class member (like "this" or "button1") to a CodeDom script structure?

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  • Generating code at compile-time using scripts

    - by Manux
    Hello, I would ideally like to be able to add (very repetitive) C/C++ code to my actual code, but at compile time, code which would come from say, the stdout of a python script, the same way one does with macros. For example, let's say I want to have functions that depend on the public attributes of a given class, being able to just write the following in my C++ code would be a blessing: generate_boring_functions(FooBarClass,"FooBarClass.cpp") Is that feasible using conventional means? Or must I hack with Makefiles and temporary source files? Thanks.

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  • terminal: where am I?

    - by sid_com
    Is there a variable or a function, which can tell me the actual position of the cursor? #!/usr/bin/env perl use warnings; use 5.012; use Term::ReadKey; use Term::Cap; use POSIX; my( $col, $row ) = GetTerminalSize(); my $termios = new POSIX::Termios; $termios->getattr; my $ospeed = $termios->getospeed; my $terminal = Tgetent Term::Cap { TERM => undef, OSPEED => $ospeed }; # some movement ... # at which position (x/y) is the cursor now?

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  • At the download of a file: does it make sense to check the filesize?

    - by sid_com
    Does the test of the file-size make sense here? I tried to cut the connection while downloading, but it looks like the size-test is never reached. #!/usr/bin/env perl use warnings; use strict; use 5.012; use LWP::Simple; my $file_size = '2342'; my $response = getstore( 'url', 'filename' ); if ( is_success $response ) { if ( $file_size == -s 'filename' ) { say "OK"; } }

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  • php cron jobs overlapping

    - by naveen gupta
    Hi I wrote few months back a script in perl for checking overlapping of jobs use Fcntl ':flock'; INIT { my $waitcount=12; # possible attemtps to run script my $waitseconds=300; # wait for $waitseconds each attempt my $lockstatus=0;#no lock was attained while ($waitcount > 0){ if (open LH, $0){ while ($waitcount > 0){ if (flock LH, LOCK_EX|LOCK_NB){ $waitcount=0;#signal end of waiting $lockstatus=1;#lock was attained } else{ --$waitcount;#decrement waitcount print "waiting to be able to lock $0\n"; sleep $waitseconds; }#end else }#end while }#end if else{ --$waitcount;#decrement waitcount print "waiting to be able to open $0\n"; sleep $waitseconds; }#end else }#end while if ($lockstatus == 0){ die "no lock was attained\n"; }#end if } I wanted to know if we can do similar thing in php .. How to integrate with your current php code which is running a part of php jobs?

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  • Getting list of fields back from 'use fields' pragma?

    - by makenai
    So I'm familiar with the use fields pragma in Perl that can be used to restrict the fields that are stored in a class: package Fruit; use fields qw( color shape taste ); sub new { my ( $class, $params ) = @_; my $self = fields::new( $class ) unless ref $class; foreach my $name ( keys %$params ) { $self->{ $name } = $params->{ $name }; } return $self; } My question is.. once I've declared the fields at the top, how I can get the list back.. say because I want to generate accessors dynamically? Is keys %FIELDS the only way? Secondarily, is there a more efficient way to pre-populate the fields in the constructor than looping through and assigning each parameter as I am above? Thanks!

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  • processing a file full of unix time strings to human readble

    - by skymook
    I am processing a file full of unix time strings. I want to convert them all to human readable. The file looks like so: 1153335401 1153448586 1153476729 1153494310 1153603662 1153640211 Here is the script: #! /bin/bash FILE="test.txt" cat $FILE | while read line; do perl -e 'print scalar(gmtime($line)), "\n"' done This is not working. The output I get is Thu Jan 1 00:00:00 1970 for every line. I think the line breaks are being picked up and that is why it is not working. Any ideas? I'm using Mac OSX is that makes any difference.

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  • Why this code does not do what I mean?

    - by Mike
    $w = 'self-powering'; %h = (self => 'self', power => 'pau?', ); if ($w =~ /(\w+)-(\w+)ing$/ && $1~~%h && $2~~%h && $h{$2}=~/?$/) { $p = $h{$1}.$h{$2}.'ri?'; print "$w:"," [","$p","] "; } I expect the output to be self-powering: selfpau?ri? But what I get is: self-powering: [ri?] My guess is something's wrong with the code $h{$2}=~/?$/ It seems that when I use $h{$2}!~/?$/ Perl will do what I mean but why I can't get "self-powering: selfpau?ri?"? What am I doing wrong? Any ideas? Thanks as always for any comments/suggestions/pointers :)

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  • Why is memory management so visible in Java?

    - by Emil
    I'm playing around with writing some simple Spring-based web apps and deploying them to Tomcat. Almost immediately, I run into the need to customize the Tomcat's JVM settings with -XX:MaxPermSize (and -Xmx and -Xms); without this, the server easily runs out of PermGen space. Why is this such an issue for Java compared to other garbage collected languages? Comparing counts of "tune X memory usage" for X in Java, Ruby, Perl and Python, shows that Java has easily an order of magnitude more hits in Google than the other languages combined.

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  • Are there any medium-sized web applications built with CGI::Application that are open-sourced?

    - by mithaldu
    I learn best by taking apart something that already does something and figuring out why decisions were made in which manner. Recently I've started working with Perl's CGI::Application framework, but found i don't really get along well with the documentation (too little information on how to best structure an application with it). There are some examples of small applications on the cgi-app website, but they're mostly structured such that they demonstrate a small feature, but contain mostly of code that one would never actually use in production. Other examples are massively huge and would require way too much time to dig through. And most of them are just stuff that runs on cgiapp, but isn't open source. As such I am looking for something that has most base functionality like user logins, db access, some processing, etc.; is actually used for something but not so big that it would take hours to even set them up. Does something like that exist or am i out of luck?

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  • bash script to find/grep particular string in xml files in particular folders

    - by user3702188
    i have a problem at work, where i need to simplify the process how i searrh for logs. I would like to ask for help from experts here. We have different services for every channel. The structure is following: - root/channel_1/service_1/2014-05-21/file_54544654541.xml - root/channel_1/server2_2/2014-05-20/file_74272172.xml - root/channel_1/service_3/2014-05-22/file_45456546.xml - root/channel_2/service_4/2014-05-23/file_78754456.xml - root/channel_2/service_5/2014-05-24/file_546546546.xml my main problem is to find particular string in these xml files. Lets say, i know the channel name but i dont know the service name under which my particular string should be present. Also i know the date. So in search i want to enter the channel name the date and string. The search would be going via all service folders and looking for string only in all xml files under particular date folder and particular channel. any ideas for quickest and easiest solution to achieve this? Either by bash or perl? Any help would be appreciated thanks

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  • File::Find and $_ in nested subroutines.

    - by zedoo
    When running the following code, the filenames of all files below C:\Test are printed. Why doesn't it print just Hello (n times, depending on how many files are processed)? Does this imply that I cannot rely on shift to reliably assign to $_? Imagine a coworker implements the wtf function and doesn't know that it's called from a File::Find wanted sub. I run this code with Strawberry Perl 5.12 use strict; use warnings; use File::Find; find(\&wanted, "C:\\test"); sub wanted{ wtf("Hello"); } sub wtf { shift; print; #expecting Hello }

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  • Loading scripts using jQuery

    - by Nimbuz
    $.ajax({ url: "plugin.js", dataType: 'script', cache: true, success: function() { alert('loaded'); }}); 1) I can't get the script to load, probably due to incorrect path, but how do I determine the correct path? The above code is in init.js, plugin.js is also in the same folder. 2) Can I load multiple plugins at once with the same request? eg. plugin.js, anotherplugin.js? Thanks for your help

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