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Using grep to extract x characters of text after a predictable pattern

I'm trying to work out how to use something like grep or sed or awk (or maybe even some Perl) to extract a string of characters which appears in a predictable place in a series of text files. Help/advice/tutorials very welcome! [more inside]
posted by infinitejones on Mar 15, 2013 - 8 answers

How to solve a complex statistics problem with a script?

In this game, you roll a number of six-sided dice to get a total. The total is either the highest single die result, or the sum of any multiples rolled, whichever is higher. For example: If I roll three dice and get a 3, 4, and 6, my total is 6. But if I roll a 4, 4, and 6, my total is 8, the sum of the two 4s. What I want to find out is the mean, median, mode, and standard deviation of the possible totals given N dice. How might I create a simple script to compute this? [more inside]
posted by j0hnpaul on Nov 30, 2012 - 24 answers

How to get perl to connect to mysql using DBD:mysql

I'm over my head again trying to run a program for a class and you were a great help last time. I'm trying to connect to mysql from Perl and have installed DBD:mysql on my Mac (OS X 10.5.8). I have no idea what I'm doing. Can you help? [more inside]
posted by sunshine37 on Nov 23, 2012 - 6 answers

What IT conferences should I budget this year?

What IT/programming/technology type conferences should I try to go to this year (June 2012 - June 2013)? I have to come up with a list of 3 by Thursday for my manager! [more inside]
posted by The Supreme Dominar on Apr 10, 2012 - 5 answers

Convert text with whitespace to csv

perl or sed or awk help for newbie [more inside]
posted by v-tach on Mar 20, 2012 - 26 answers

Perl one-liner help

Perl one-liner help - increment a number in a find-replace situation starting at a specific number? [more inside]
posted by odinsdream on Mar 13, 2012 - 8 answers

How to deal with Chinese in a Perl program on a mac

Working with Chinese and English text, in a Perl programme, on a Mac. I feel like an idiot. [more inside]
posted by stonepharisee on Oct 14, 2011 - 5 answers

Find me (or create me) a crash course in Semantic Web...

Can you find me an online (?) course giving me the essentials of the following alphabet soup of Semantic Web related... things? XML, XHTML, CSS, RDF, OWL, JSON, SPARQL, one of JAVA, Perl, Python etc... [more inside]
posted by KMH on Oct 7, 2011 - 8 answers

Where my army of robots?

I'd like to automate the creation of online exercises on my company's platform (as in: automatically generated matching, multiple choice, highlighting activities). [more inside]
posted by mammary16 on Sep 12, 2011 - 2 answers

Help me fix my nifty webapp

Help me repair or replace this nifty instrument availability web app on my facility's website. [more inside]
posted by sararah on Jul 7, 2011 - 8 answers

Early-2000s Perl Beckons with Plentiful Documentation

I'd like to get my feet wet with Perl. Baby steps, just a little beyond "Hello World." I'd like to create a simple little app. I have a few questions... [more inside]
posted by circular on Jun 27, 2011 - 12 answers

Decoding the question of the coder I need

What kind of Web programmer/coder do I need for this project? Where do I find such a person? [more inside]
posted by Shepherd on May 5, 2011 - 15 answers

Help learning regex

I have a brain-block when it comes to Regex and really need to learn it. Can anybody suggest really good tutorials with little exercises to reinforce the info? I've tried so many times to get a grasp and it just escapes me and would be invaluable for school/work since I'm doing a lot of string processing in Perl and PHP. Thanks!
posted by Raichle on Apr 8, 2011 - 11 answers

How to sell EPUB books for programmers

Selling EPUB e-books, adding on to a custom shopping cart app: handle like any downloadable file? DRM? If DRM is a bad idea, good layperson-accessible article explaining clearly why not? If DRM is a good idea, how is it implemented? [more inside]
posted by amtho on Feb 22, 2011 - 14 answers

parse pix/asa logs

Trying to create a Perl or shell script to parse/convert Cisco PIX/ASA logs into a CSV format. Has anyone had any success with this? Since all messages aren't standard, I'm trying to think of the best way to approach this issue. Has anyone had any success, or have a good AWK, Grep, SED, or perl script that can get this done?
posted by fozzie33 on Dec 16, 2010 - 17 answers

Renaming a whole bunch of files at once, in bash

Please help me rename ~1300 image files in bash, en masse. [more inside]
posted by Asparagirl on Dec 12, 2010 - 8 answers

Perl regex hell

I have been hammering Google for about three hours now trying to find the answer to what I expected to be a simple question: WTF is up with regular expression backreferences in Perl? I cannot make this (simple) find-replace work. [more inside]
posted by caution live frogs on Sep 17, 2010 - 14 answers

Why would you write this in Perl?

Can you explain to me a block of Perl? The tricky part is the last line, which is just a variable sitting on its own - no operation, no control structure, nothing. [more inside]
posted by yomimono on Sep 3, 2010 - 13 answers

Perl is making my head explode

Script-filter: I've been tasked with finding out who at our company is synchronizing to their home folders on our fileservers, and how often. Although initially it was recommended I do this in perl, my head is blowing up trying to get it to work. Lots of blundering attempts to ask for help inside. [more inside]
posted by routergirl on May 21, 2010 - 15 answers

Java and Perl Refresher

Been years since I've written any Perl or Java (Core/Swing/Servlets/JSP). Have an interview soon, where can I find a quick and thorough refresher?
posted by blueplasticfish on Jan 6, 2010 - 3 answers

Too much music! I should have such a problem...

Perl script to manage enormous, and growing, music library? [more inside]
posted by chez shoes on Dec 8, 2009 - 9 answers

PERL before swine

PERL filter: I'm a PERL ignoramus and trying to run a script from Baseball Hacks to download a bunch of zipped files from retrosheet.org. I'm getting an error that says: URL must be absolute. I can't figure out how to make the url absolute, as each file's location is different and supplied by variable values. Any hints would be super appreciated. (Script is after the jump). [more inside]
posted by bluejayway on Oct 19, 2009 - 8 answers

Batch convert Word docs to text files?

Batch convert Word docs to text files? [more inside]
posted by yarrow on Jul 9, 2009 - 5 answers

Help me learn Perl, Python, Lisp, Haskell, Ruby

Help me learn a few new programming languages. Python, Perl, Lisp, Haskell, Ruby. [more inside]
posted by jgunsch on Jul 9, 2009 - 22 answers

Best language for highschool bioinformatics course?

I'm teaching a course on bioinformatic programming for high schoolers. Which language should I teach it in? And do you have any nifty ideas for easy projects that fall under the bioinformatics header? [more inside]
posted by bergeycm on Jun 25, 2009 - 20 answers

Shell script handling CSV columns

I'm using a shell script to handle some excel docs by converting to csv and reformatting it a little bit. I'm having some difficulty going on with the next part of the script. Some help would be great. :) [more inside]
posted by fightoplankton on Jun 10, 2009 - 11 answers

DWIM means do what I mean, dammit!

Perlfilter: I'm having problems iterating over and testing for keys within a hash of hashes. [more inside]
posted by Ritchie on Mar 26, 2009 - 12 answers

Joining MP3 Files Together Based on Date in Filename?

I have a podcast that downloads as multiple segments over multiple days. Its format arrives as YYYYMMDD_showcode_segment.mp3; so, for example, one download might result in files as 20090323_goofa_01.mp3 through 20090323_goofa_21.mp3, and also within the same download 20090324_goofa_01.mp3 through 20090324_goofa_21.mp3. What I'm looking for is a Unix script (shell, perl, what have you) that would look at a directory and look at what dates are represented there, and let me join all of the segments together by day. I can use mpgtx -j to do the actual joining; I'm looking for the code that would let the script determine what dates are in the directory and then get each day's segments united into a single MP3 for that day's show.
posted by WCityMike on Mar 25, 2009 - 5 answers

Any perl gurus up to fix a bug in Warrick?

For the good of the Underdogs, does anyone know how to fix a bug in Warrick? [more inside]
posted by Lord_Pall on Feb 23, 2009 - 10 answers

Help me avoid coding a lame webpage!

I need a simple cgi-bin script that implements a scoreboard or counter for multiple teams. [more inside]
posted by perrce on Feb 16, 2009 - 2 answers

Learning about firewalls and general computing

I allowed perl access past my firewall (Am I even saying that right?). Should I be worried? And how do I learn more about the subject so I'm not so clueless in the future? [more inside]
posted by dicetumbler on Jan 11, 2009 - 8 answers

Yet Another File Manager Question

Help me find an online file manager that doesn't suck! Everything I've found so far falls into two categories, either (a) sucking, a lot, or (b) requiring, for inexplicable reasons, a database backend. I just want something that will handle file uploads and basic file management (move, rename, delete, copy). [more inside]
posted by larsks on Dec 2, 2008 - 5 answers

How can I automatically add tracks to the OS X iTunes Library?

Is there a scriptable solution to add items to the OS X iTunes library? [more inside]
posted by harkin banks on Nov 14, 2008 - 16 answers

Regex crisis...

Regular Expressions / PHP preg_replace problem. Can this be made to work...? [more inside]
posted by twine42 on Oct 30, 2008 - 13 answers

Perl & mod_fcgid- how can I make sure it's running & being taken advantage of?

I have a couple Perl scripts I'm publishing soon, and I want to make sure they'll run under mod_fcgid in order to keep the server load as low as possible. Previously, I've only ever run scripts that test FastCGI (ie, while ( my $q = new CGI::Fast ) { $count++; echo $count;}) or taken advantage of larger Perl packages (like MovableType) that claim to run as FCGI as long as you set up Apache & FastCGI/mod_fcgid properly and change the file suffix to ".fcgi". So, here's my question: do I need to do anything besides change the file suffix of my scripts, and if so, what?
posted by paul_smatatoes on Oct 14, 2008 - 2 answers

How can I load (and sort) a really huge text file in Perl?

How do I load and then sort a really huge (94 MB) text file list of words? Perl runs out of memory trying to load all the lines-- before I have a chance to try to sort it. [more inside]
posted by kosmonaut on Oct 8, 2008 - 25 answers

uploading/downloading huge files

How to code a Perl web app to upload/download HUGE files? [more inside]
posted by Zed_Lopez on Aug 26, 2008 - 3 answers

How do I make simple dynamic web pages using perl?

How should I develop simple dynamic web pages using perl? Does anyone have any suggestions on how best to produce simple web pages in perl that execute logic (e.g., opening property documents to retrieve property values and saving back changes). I am new to perl and would like some detail instructions or links to tutorials. Would a framework like Mason be overkill?
posted by zzztimbo on Aug 22, 2008 - 6 answers

Need a replacement for formmail.pl

What is a proven contemporary replacement for formmail.pl? [more inside]
posted by the matching mole on Aug 14, 2008 - 4 answers

Live AIS data is a web browser

Hi, Another oddball question... I have a live data stream of AIS data and I would like to take the data and ultimately display it on a world map through a web browser. The problem is that I have no clue as to how I would display live updated information on a map. [more inside]
posted by kaozity on Aug 11, 2008 - 6 answers

Computer languages considered in linguistic contexts?

Computer languages considered in linguistic contexts? [more inside]
posted by AmbroseChapel on Jul 27, 2008 - 19 answers

Can I write to a div using Perl, or otherwise solve my form submission problem?

Can I write to a div using Perl, or otherwise solve my form submission problem? [more inside]
posted by unsigned on Jul 24, 2008 - 5 answers

need a library for text classification

I need to be able to automatically identify language (English, Japaneese, Russian, etc ... ) in which a particular blog-post has been written. (lang attribute might or might not be available). [more inside]
posted by chexov on Jul 20, 2008 - 4 answers

Make Apache recognize Perl!

How can I get my web server to interpret perl [more inside]
posted by kaozity on May 28, 2008 - 7 answers

Redirecting users by IP in Apache

How do I redirect incoming website visitors to an external site by IP address? [more inside]
posted by Oktober on May 12, 2008 - 7 answers

Shell scripting or something better?

Faster techniques for grabbing lines of a file and doing text manipulation and arithmetic via shell (or other) scripting? [more inside]
posted by Blazecock Pileon on May 9, 2008 - 20 answers

What shopping cart software should I set up?

Best starting point for e-commerce / shopping cart software? I'm a competent Perl programmer with background in several other languages, who wants to create a decidedly minimalist-looking web site shopping cart for a client. I expect to hack Perl or PHP code, but would like to hack things that are designed to be hacked. Anyone tried CRE Loaded? Other recommendations? Other places to ask? [more inside]
posted by amtho on Mar 30, 2008 - 11 answers

How should I convert a Thunderbird inbox into text files?

What's the best way to export all of the emails in a Thunderbird inbox to text files, one text file per email? [more inside]
posted by eisenkr on Mar 14, 2008 - 6 answers

Database application freelancer seeking programming language advice

I'm planning on starting a database freelancing business. I understand a lot of people prefer Microsoft Access or FileMaker. With the current evolving trend of applications going on the web and add to that my somewhat good experience with PHP, HTML, Javascript and CSS I'm seeking a cross platform efficient application environment. This is why I believe Access and FileMaker are not an option, I'm also more experienced with high level languages than I am with Access or FileMaker. [more inside]
posted by mrbloo on Mar 13, 2008 - 11 answers

Is writing a bad C++ program better than writing it in Perl?

Does compiled vs. interpreted code make a difference if the structure of the algorithm is the same (ie, ugly and slow)? Should I take the extra effort of writing a small program in C++ or just do it in Perl...? [more inside]
posted by omair on Mar 12, 2008 - 17 answers

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