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Questions tagged [file-extension]

A file extension is an optional alphanumeric identifier which comes after the last found period in a file name. A file extension itself does not define what type of data is in a file, but it does give a hint as to what is *supposed* to be in the file.

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Prove which application is used for opening log files: assoc and ftype seem unreliable on Windows-10

My customer has a problem with logfiles, which become too large: on their PC (windows-Server 2016) Notepad.exe is used as the application for opening such files. I've altered this to Notepad++.exe, ...
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What is the autosave powerpoint file extension

Following a windows PC crash, when asked if I wanted to save an autosave powerpoint presentation, I accidentally clicked no. All my work was lost and the autorecover folder C:\Users\<user>\...
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Audit Request for Complete List of Recognized Filename Extensions in FFMPEG FFPROBE FFPLAY

I understand FFMPEG has a list of supported codecs and some users will be tempted to dismissively handwave my request by telling me to do my own research on codecs. Those responses will be treated ...
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Can someone help me open this .file file?

I found an old file of mine and I'm wondering if someone could identify its extension and help me open it. Every time I open it it opens Notepad with `½18f%y_W}ÿuìGŽu–7Sƒ²+kÝqéÚ‘…ÓÎ,™ÂŠþ5WDuùxq­*...
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Windows 10: how to always use this app to open files w/o filename extension?

When you open file w/ extension for the 1st time you see this: When you open file w/o extension for the 1st time you see this: So, where is "Always use this app to open files w/o filename ...
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What are the VMware's vm.scoreboard files?

Basically the same ask as from here: I see a few new files beside usual guest file: vm.scoreboard vm-1.scoreboard vm-2.scoreboard etc. What are they? The answer there doesn't make sense to me: ...
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Notepad++: Adding an alternate extension to a user-defined language

I'm using Notepad++ (v8.1.3) with the Steen-Hultin ReStructuredText add-in. My problem is that I need to use it with the extension .rsts as well as .rst, and it doesn't work. I opened userDefineLang....
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Is it possible to configure Outlook in a way that it opens or previews any unknown file in a text editor (like VS Code or Notepad)

At times, I get emails with files that have an unknown file extension (for example .x-y-z). Because this extension is unknown to Outlook (and virtually everyone on the planet), I can neither open the ...
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Is it possible to entirely replace one app from another in all defaults?

Let us say I want to replace PowerPoint with another presentation software for all the extensions it is currently the default application (.pptx,.ppt,.ppsx, etc.). Is it possible to do that all at ...
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Is it ok to deselect these file types in advanced indexing options

Every single file type is selected in my indexing options for my Windows 10 PC. Only some of them are selected to index file contents as well, but they're all indexed at the very least with file ...
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How to associate a command with files that have no extension (Regedit)

I have several processes that generate files with no extension at all and would like to add a custom context menu menu (i.e. be able to right click on them and select 'open in Notepad' or 'make .txt ...
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2 answers
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Audio Conversion through change of file extension (E-AC3)

Not sure if this i the right place to ask my question but I'll give it a go. I extracted an E-AC3 Audio track with MKVExtractGUI. The output file I get was .eac3. Another tool I used says it supports ...
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Detecting the type of a media file [duplicate]

How do I detect the file extension of a media file missing its file extension? I accidentally removed it. Self-Answer. The question has been asked already here and here, but the questions have been ...
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Right Click + New XLSX Workbook Results In "Excel cannot open the file because the file format or extension is not valid."

Lately I have been having an issue that seems to have happened quite out of the blue where if I go into a folder from File Explorer to create a new .xlsx workbook using a right-click I will create a ...
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How do you create your own filename extension that works on Windows 10?

I created a .pdf file that I called dhwd7486.pdf, because I want to create something great (this is included), I renamed the file extension into .unused (cuz I use it occasionally), but I thought it ...
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What are longest extension names functioning in actual programs? [duplicate]

I'm writing piece of code detecting file extensions and I was getting quite a lot of garbage like . Jones - Some Document Title just because file name was starting with Dr. Jones. So I decided to put ...
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How can I open .dictionary files on OSX?

I'd like to have a look at the files that the Dictionary App that comes with macOS uses. I was able to locate the files, they're of the .dictionary format. How can I open them, if at all?
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How to change .vhd file association to open with Windows Explorer?

I'm having an issue with .vhd files not opening with Windows Explorer liek the way .vhdx does. Before it was just unrecognized, now I've accedentally change it to Adobe Acrobat. I've tried changing it ...
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In Windows, what are the purposes of file extensions?

As far as I know, in Linux filename extensions don't have any special meaning to the operating system. It helps users to identify the file, of course, but the OS itself simply does not care about it (...
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Opening a .zbd file?

I have a .zbd file with sensitive information on it. I have downloaded the ZoomBrowser from Canon, it does not recognize it as a file. I downloaded the Zebedee Secure Tunnel, but that just creates a ...
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Double extension file

i don't know from where I got this file in my computer's temp folder C:\USERS\xxxxxxxxxx\APPDATA\LOCAL\TEMP\TMPE8FE.TMP.BAT is it some kind of malware? if yes, then how should i resolve this.
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3 votes
1 answer
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Identifying old files types

I have three files with these extensions ".mrf, .md5, .ptr" that were created in 2009, 2007 and apprx. 2012 respectively. I know that file types could be different than the extension. For example, ...
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Anaconda can't launch python script with shebang line in Windows

I have an anaconda installation in windows that I think used to be able to run python scripts with shebang lines like: #!/usr/bin/env python print("hello python") at a prompt without typing "python" ...
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batch review files, ascertain the correct file extension and set the correct file extension type for each file

Ive got a folder with video files which are a few different file extensions. eg : .m4v, .avi, .mp4, .mkv I deleted all the extensions off the file names using a batch renaming tool, but when ive done ...
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Search files by extension in windows

I want to search only svg files in a folder containing svg and svgz files. I typed "*svg" in the search bar but I get all the files begining with the svg extension including svgz. How do I exclude ...
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Make .cpp file to open as default on Windows 10

I am creating the header files for Arduino, so I created 2 files with .h and .cpp. the .cpp files open by default with notepad. I want it to look like .h files given in the image. How to change ...
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How to change extension by batch on Windows 10

How to change extension by batch on Windows 10. For example I have thousands of *.JPG but I would like to have .jpg. Is there any software for that?
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What does the 'n' stand for in the UEFI/EFI shell script file extension?

(U)EFI shells support the execution of scripts much like a typical *nix shell does. These scripts have the extension .nsh. Out of purely esoteric curiosity: what does the 'n' stand for? I feel it's ...
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Windows 10 Command Prompt - List all files and folders inside a directory without displaying file extensions

I've been using dir /b to display all files and folders in a directory but it includes the file extension for every file in a directory. What is the command for displaying all files without including ...
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3 votes
1 answer
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Default program not listed in windows10 settings [duplicate]

TL;DR: read only bold text + check pictures. I was trying to change .txt files default program to visual studio code, the problem is, that when I open settings in windows 10 and try to change it ...
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Need help to recover files from .besub file extension

I trying to learn python coding and i found a file extension (.besub) has change the python files as in figure attached and can not open.Please help to recover it.
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VS Code Syntax Highlighting for (Linux) files without a file extension

Is there an option or extension that enables VS code to support syntax highlighting for files without an extension like /etc/fstab?
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Weird image file association in windows 10 after update

I'm on windows 10 and I have Paint associated to some image file extension, e.g. *.png. Since a recent update (either 1809, build 17763.475 or slightly earlier) when I double click a png file, it is ...
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4 votes
2 answers
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How to remove extension from pathname passed as {} in `find -exec`?

Given the situation that audio needs to be extracted from video files residing in subdirectories, how would one go about properly naming the resulting files? The following one-liner works, but ...
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How do I open a file with the file extension “FILE?”

From time to time someone sends a file that comes in the extension of .FILE. How do I change this or open this? I think they might be using Microsoft Word or something like at the office. I don't ...
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Open a file type with a program AS another file type (Windows 10)

For a project I'm working on I need to keep Photoshop files (.psd) in the same directory as another program (Unity3D) imports from. In order to get Unity not to see the Photoshop files I can change ...
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Rewrite the first three characters of *.ext file names in a folder with a set of letters

How to rewrite the first 3 letters of file name Using set alphabet: ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 to randomise characters Targeting all files of a particular extension in a folder *.ext ...
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Files encrypted with af21 file extension

I have a set of files which got encrypted during the recent ransomware attack. All of the files have a common extension .af21 . I am able to play the video files using VLC, although they have the same ...
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How to launch a separate Excel application each time I open an "*.xlsm" file

As stated in this StackOverflow question, I would like to open a new Excel application every time I open an *.xlsm file. I know this can be done launching Excel /x from the start button, but I'd like ...
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My files are showing .blower file extension

My files are showing .blower file extension. I have tried to remove malware and viruses but this problem is still there. Installed Microsoft Security Essentials and also ran Microsoft Malicious ...
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1 vote
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How to open a file with .ghi extension?

Does anybody know how to open or convert to an more common format this type of file? Google says that this may be an configuration file but the person who provided this file says this is a record ...
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1 vote
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How to chmod by file extension to remove execute permission on some file types?

I have searched but couldn't find a proper way to do that. I find annoying that each time I click on a text or code file I have a prompt where I can execute the file (maybe it's me that messed up ...
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2 answers
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How to know, if a file is still compatible, even if you change the extensions manually?

I do have few file formats like .tgpp or .flv or .webm. If I change the file format of a file manually, let say for example from exampleFile.tgpp to exampleFile.mp4V or exampleFile.mp4 it still work. ...
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3 votes
1 answer
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Can't change Windows 10 default file type association [duplicate]

After installing Sublime Text on Windows 10, I can not change the default application for files with the .txt extension anymore. Right-clicking on Context Menu > Open With… > Choose Default ...
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1 answer
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Disable "keep using this file" suggestion screen in Windows 10

From time to time Windows 10 "thinks" that I changed my mind and that there is a possibility that I would like to change default program that opens certain files in my computer: This drives me nuts. ...
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Find directories /w files with 2 different extensions

So I am trying to think how I can possibly even do this. I can find the files with this for example, but really what I want is the directories specifically that contain both file types. Any ideas? ...
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2 votes
2 answers
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DOS moving specific .xml file extension [duplicate]

I want to move my .xml files from a directory (let's call it "from") to another (we'll call it "to") but using wildcards moves unwanted files like .xml_. How can I move them while being specific about ...
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Batch File FOR Loop 7-zip extract specific file extension

I am trying to create a batch file to recursively extract multiple archives in multiple sub-directories from a source directory to an output directory while keeping archive folder structure. The below ...
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where do thunderbird / Xcfe get their MIME type handler settings?

In my thunderbird setup (version 60.0 on 64-bit Debian Stretch) PDF attachments are opened in libreoffice showing generally useless gibberish. That is when I double-click. When I right-click, there is ...
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1 vote
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Can Files Be Compressed Without Changing Extension?

It's common for web servers to pre-compress their files with brotli or gzip. And they do so without changing the extensions of the files. Is their a way to do this in a typical desktop environment (ex....
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