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45
votes
7answers
4k views

How are file types known if not from file suffix?

I would like to know how file types are known if filenames don't have suffixes. For example, a file named myfile could be binary or text to start with, how does the system know if the file is binary ...
23
votes
4answers
11k views

How to properly and easy configure `xdg-open` without any enviroment?

I'm using OpenBox window manager without any desktop enviroment. xdg-open behaves strangely. It opens everything with firefox. $ xdg-settings --list Known properties: default-web-browser ...
19
votes
4answers
2k views

Is there an “open with” command for the command line?

Does the command line have a way to get a recommended list of programs used to open a particular file, based on the file type? For example, a .pdf file would have an open with... recommendation using ...
8
votes
2answers
519 views

Finding a file type assuming wrong extension

I have an image archive I keep up. Sometimes, the sites I pull them from reformat the file while keeping the extension the same, most often making PNG images into JPG's that are still named ".png". ...
7
votes
3answers
8k views

wget - How to download recursively and only specific mime-types/extensions (i.e. text only)

How to download a full website, but ignoring all binary files. wget has this functionality using the -r flag but it downloads everything and some websites are just too much for a low-resources ...
7
votes
3answers
4k views

How to remove Notepad from the applications list?

After installing Wine, Notepad has became a default application to open unknown textual files by double click. I'd like to eliminate this behaviour and remove Notepad from the list of applications ...
6
votes
3answers
161 views

How can I determine a file's conventional filename extension

The file command is good at determining file types for my needs. Is there any way to map those results to conventional filename extensions?
6
votes
1answer
289 views

What could cause strange behavior in file(1) command?

What could cause file(1) command to output application/msword application/msword (yes, twice in a row) as the mime type for some of the .doc files? Normally it prints just application/msword. If run ...
5
votes
1answer
986 views

How do get an html file to open in preferred html application from command line on linux?

How do get an html file to open in preferred application from command line on linux? I have an xterm window open and an html file I want to do something like open test.html and that will start my ...
5
votes
2answers
3k views

Gentoo default application for opening files

On my Gentoo box running without a desktop environment, every time I try to open a file the system tries to open it with Firefox. I understand that without a desktop environment "open file" cannot ...
5
votes
1answer
281 views

How to fix xdg-mime for text formats

My xdg-mime makes mistakes. It recognizes an .html file containing Java code as a C++ file. I don't quite know the internal mechanism of xdg (eg. how it determines filetype). And I want to know how ...
5
votes
1answer
416 views

How can I configure OpenBox session for opening files by mime type?

I've started using OpenBox and I really like it. But my chromium opens everything with firefox. Is there any fix for that? I'm looking for most lightweight solution, but also with easy and fast ...
4
votes
3answers
1k views

How to use Emacs to recognize and automatically open GPG encrypted file in ASCII armored format?

gpg -ca passwords.txt create encrypted ASCII file passwords.txt.asc. Emacs open the file as a normal text file: -----BEGIN PGP MESSAGE----- Version: GnuPG v2.0.19 (GNU/Linux) ...
4
votes
1answer
2k views

How to setup default browser?

How to change default browser for opening url-s ? For sanity check, I tried: xdg-open 'http://unix.stackexchange.com' And it opens in other browser. I found information about assigning ...
4
votes
2answers
479 views

How to tell mutt not to wait for an attachment program to return?

I use this line for images in my mailcap: image/*; eog %s &; but mutt immediately deletes the temp file and eog can’t load it. When I remove the & mutt waits for eog to be closed until it ...
4
votes
2answers
4k views

How can I make chrome (stop asking to be) the default browser?

I am running Linux Mint Debian edition (essentially Debian testing) and the Cinnamon desktop environment. Every time I launch google-chrome it asks to become the default browser. I have told it to do ...
4
votes
2answers
1k views

How to set the Linux Mint desktop environment to use a mime type?

As a extension to this question: How to make difference between .wxm (wxMaxima) and .c files in Linux Mint? I'm using Linux Mint. I created a mime type. Now I want the desktop environment to use it. ...
3
votes
5answers
4k views

Script to list only files of type ASCII text in the current directory?

How to write a shell script which searches the current UNIX directory and returns the names of all files of type ASCII text?
3
votes
1answer
772 views

How can I find the application for a MIME type on linux?

Is there a linux API that can find the default application for a MIME type? Then I can use this application to open a file. I can not use xdg-open(url) because the file format is a wrapper format and ...
3
votes
1answer
472 views

“file” command confusing C & C++

When using file to check some file types, I noticed that it seems to incorrectly label C++ files as C files: $ file User.* User.cpp: C source, ASCII text User.h: C++ source, ASCII text User.o: ELF ...
3
votes
1answer
173 views

Why do desktop environments make custom xdg-open replacements?

Related to this answer on my previous question. So, XDG can handle it on its own: It can manage default applications - xdg-mime It can open file with associated application - xdg-open. Why do ...
3
votes
1answer
388 views

How an application is chosen over others to open a particular filetype in Linux

Earlier my text/xml files were by default opened by firefox I think. Not sure of this because I do not remember exactly. Then I think I installed geany and then my text/xml files were always by ...
3
votes
2answers
401 views

Is there a glibc API that can find the default handing application for a MIME type on linux?

I want to find the default handling application in my C program. Is there a C API with same functionality as xdg-mime query default mime-type on Linux?
3
votes
1answer
645 views

Given a mime-type get the corresponding file extension

I want to download a file using curl to a temporary directory with the appropriate extension. Currently I do something like this: tmp="$(mktemp -t 'curl')" curl -o "$tmp" ...
3
votes
1answer
52 views

Where are recognizers for media types stored and how to add one?

When one writes a html file, linux can state that the MIME-type is text/html. How is this handled? Where are the "recognizers" stored? How can one add a MIME type with with an implemented recognizer?
3
votes
1answer
603 views

Items in context menu in Lubuntu

I am using Lubuntu 11.10. When I call the context menu (right click) many programs appear to open some file. For example, for .tex files, besides TeXstudio and Leafpad, Gnumeric (what a strange ...
3
votes
1answer
555 views

How to get the icon for a MIME type?

How to get the icon for a MIME type? I don't want to use g_file_info_get_icon() because its input parameter is a file, not a MIME type. My use case: I have a wrapper file which embeds a media ...
3
votes
2answers
1k views

Why does `xdg-mime query filetype …` fail to find a new added file type?

I installed a new file type to share MIME database. But xdg-mime query filetype cannot tell the new type. This problem only happens on my own Linux OS which does not use GNOME or KDE as its desktop. ...
3
votes
0answers
180 views

xdg-open just opens Nautilus

I'm running Fedora 20 with Gnome 3.12. Recently, I installed KDE via yum but decided to stick with Gnome. Ever since installing KDE, the xdg-open and gnome-open commands do not open files with the ...
3
votes
0answers
275 views

Why are all files detected as application/octet-stream in nemo?

nemo sees all files as Binary (application/octet-stream), so these kinds of things happened: All files (.mkv, .mp4, .torrent, anything) lost their association to any program All .pdf files could not ...
3
votes
0answers
300 views

Open .desktop files in text editor by default

I wonder if it's possible to open files with the .desktop suffix in a text editor of choice by a simple double-click in a file manager. Even assigning the corresponding MIME type to a text editor with ...
2
votes
2answers
178 views

file command apparently returning wrong MIME type

Why doesn't the following return text/csv? $ echo 'foo,bar\nbaz,quux' > temp.csv;file -b --mime temp.csv text/plain; charset=us-ascii I used this example for extra clarity but I'm also ...
2
votes
2answers
217 views

Can shared-mime-info associate a MIME type to a desktop applications?

I can add a new MIME type in shared MIME-info, but how can I associates this MIME type with an application?
2
votes
1answer
483 views

How to make difference between .wxm (wxMaxima) and .c files in Linux Mint?

I installed wxMaxima on my laptop a few days ago. The issue is that files with the extension .wxm, that are used with wxMaxima, are identified as a C source files. Therefore, when I double click on ...
2
votes
2answers
144 views

Where does Nautilus get its file type description

I've created and registered some shared-mime-info files for custom file types. For example, in ~/.local/share/mime/packages I've added files like x-myokit.xml containing a mime type description, ...
2
votes
2answers
381 views

How to add mimetype bindings?

I got an error message when launching "xdg-open" , No applications found for mimetype: inode/mount-point How should I add a binding for "dolphin" ?
2
votes
1answer
46 views

How does filetype determination by filename extension in addition to XDG spec (mimeapps.list) work

I'm trying to set the default application for R noweb files but fail to find the place where this is specified. The reason for this is that my file managers seem to determine the file type by filename ...
2
votes
1answer
126 views

Using Evince instead of Okular for Alpine (MIME configuration for PDF viewers)

Within Alpine, if I hit enter on a PDF attachment, my system brings up Okular. I would prefer if it brought up Evince, because that's the PDF viewer I normally use. How can I do that? This is clearly ...
2
votes
1answer
585 views

What to do with a message/partial MIME type?

I used a copier/scanner to scan a document and email me the resulting image. It sent me several emails, each with a message/partial MIME attachment. mutt doesn't seem to understand these messages. ...
2
votes
2answers
641 views

What tool to edit the /usr/share/mime/packages/freedesktop.org.xml file

I edited my /usr/share/mime/packages/freedesktop.org.xml (with a text editor) to modify the file icon of application/x-7z-compressed mime type : <mime-type type="application/x-7z-compressed"> ...
2
votes
1answer
570 views

Detect file-type with the help of magic-file and rename file-suffix accordingly

I have a folder (the iPhone Backup) with various files without a suffix. I want to run a batch process over these files, which detects each file's file-type (with the help of the magic-file database ...
2
votes
1answer
1k views

Fixing mime type on Ubuntu

I am using Ubuntu 10.04. Sometime back after an update, all files in Ubuntu started showing a mime type of text/plain. This means that double clicking on any file opened it using gvim which is really ...
2
votes
1answer
386 views

How is MIME type “text/html” registered to shared-mime-info? Where is its *.xml file?

On Ubuntu 10.10, which XML file under the directory /usr/share/mime/applications is for MIME type text/html? I checked xml.xml and xhtml+xml.xml, but neither has a glob pattern of *.html. So where is ...
2
votes
0answers
114 views

Files are opened by wrong applications if opened from a number of programs

History: I had problems with mime associations under Firefox. Firefox opened downloaded files with wrong programs. I deleted ~/.local/share/applications/mimeapps.list and now it works. Now I noticed ...
2
votes
0answers
52 views

Why does xdg-open text_file differ from sudo -u me xdg-open text_file?

If I run the following command, the text file opens in my preferred editor (kate). $ xdg-open text_file However, if I try the following, where sparhawk is my username, I get several warnings, and ...
2
votes
1answer
282 views

gnome-open execute shell script

Is there a way to execute shell scripts automatically using gnome-open? If I call gnome-open script.sh in the terminal, the script opens in the default text editor. However the shell-script is ...
2
votes
1answer
48 views

Metadata for exchanging BSD mailbox files

The BSD mailbox format has, according to Jamie Zawinski, never been formally documented (see his anti-content-length rant), and does not have, as far as I know, any formal identifiers that may be used ...
2
votes
0answers
365 views

Change the default terminal for all .desktop files?

My htop.desktop launches XTerm, but I want to change the default terminal to xfce4-terminal in all "Terminal=true" .desktop files.
2
votes
0answers
216 views

Create new file type association

Let's assume I have a program X that uses files with the extension .xez. How can I make X the default application for all files with the extension .xez? My first idea was xdg-mime default X.desktop ...
1
vote
1answer
242 views

Where to submit new mimetypes?

I've defined new mimetypes with file suffix, where should I submit my work, so that it will be included in future linux/unix distros ?