file-extension

How can I extract the extension of a file given a file path as a character? I know I can do this via regular expression regexpr("\\.([[:alnum:]]+)$", x) , but wondering if there's a built-in function to deal with this? This is the sort of thing that easily found with R basic tools. E.g.: ??path. Anyway, load the tools package and read ?file_ext . Let me extend a little bit great answer from https://stackoverflow.com/users/680068/zx8754 Here is the simple code snippet # 1. Load library 'tools' library("tools") # 2. Get extension for file 'test.txt' file_ext("test.txt") The result should be 'txt

I need help in how to create a custom file extension in my C# app. I created a basic notes management app. Right now I'm saving my notes as .rtf (note1.rtf). I want to be able to create a file extension that only my app understands (like, note.not, maybe) File extensions are an arbitrary choice for your formats, and it's only really dependent on your application registering a certain file extension as a file of a certain type in Windows, upon installation. Coming up with your own file format usually means you save that format using a format that only your application can parse. It can either

My application handles with files of type *.mndl which is not more than a customized *.plist . Up until now I've been using *.plist files but now I want to associate the extension and be able to open *.mndl files from any other app I have realized that renaming file.plist to file.mndl does not work. (Hence, I don't even know if I did correctly the extension association and exportation thing) I sent to myself a file file.mndl from the computer and when received in mail.app I got file.mndl.plist (It was automatically renamed, this happened when reseting my iPad) How can I create my own mndl

I'm trying to lower-case all my extensions regardless of what it is. So far, from what I've seen, you have to specify what file extensions you want to convert to lower-case. However, I just want to lower-case everything after the first last dot . in the name. How can I do that in bash ? Igor Chubin Solution You can solve the task in one line: find . -name '*.*' -exec sh -c ' a=$(echo "$0" | sed -r "s/([^.]*)\$/\L\1/"); [ "$a" != "$0" ] && mv "$0" "$a" ' {} \; Note: this will break for filenames that contain newlines. But bear with me for now. Example of usage $ mkdir C; touch 1.TXT a.TXT B.TXT

I'm wondering what the difference between .phtml and .php files is, and when to use one over the other. Alex There is usually no difference, as far as page rendering goes. It's a huge facility developer-side, though, when your web project grows bigger. I make use of both in this fashion: .PHP Page doesn't contain view-related code .PHTML Page contains little (if any) data logic and the most part of it is presentation-related .phtml was the standard file extension for PHP 2 programs. .php3 took over for PHP 3. When PHP 4 came out they switched to a straight .php . The older file extensions are

I am creating a java swing application and I need to set the my program as the default program for the file extension .mcsd (MIME type text/mcsd ). This must work on windows, and it would be nice if it worked on OS X/Linux as well. I am somewhat new to java (3 or 4 months) so please don't bombard me with all kinds of expert talk. I have seen associating a custom file extension with java app in windows , but I would prefer not to use the Java Web Start. If possible, I would also like to know how to set the icon of that file type. I have found exe4j as a way of creating the .exe and plan to use

I am trying to get my Apache2 web application to push an arbitrary file extension as an octet-stream when pointed to by a browser. i.e. Someone goes to blahblah/examples/example1.xyz I want the browser to download the .xyz file rather than just display it. I have tried adding .htaccess in the root of the web app including AddType application/octet-stream xyz And I have also tried to add the mime type to /etc/apache2/mods-enabled/mime.conf and /etc/mime.types which is referenced as the types library from mime.conf . I have read a good deal about this on the internet and still haven't gotten

In VBA, how do I get a list of all the files with a specific extension in a specific directory? i am unable to do Application.FileSearch , because i am using excel 2007 In response to your comment "so how many times do i know to run it?" , this example runs until it lists all the files whose names match strPattern . Change the strFolder constant. Public Sub ListESY() Const strFolder As String = "C:\SomeFolder\" Const strPattern As String = "*.ESY" Dim strFile As String strFile = Dir(strFolder & strPattern, vbNormal) Do While Len(strFile) > 0 Debug.Print strFile '<- view this in Immediate