Is there any command that could set MIME type of a file? for example:
mime --set --MIME="image/pjpeg" filename.jpg
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Question is already answered by
@PHPLearner in a comment. However, here is a longer answer.
There is no particular command like
mime as asked in the question, and no doubt one such command can be created. For adding a new MIME type, all it takes is editing the
Let's say you want to add MIME type with extension
Open a command line and enter the line below (replace
btc with your extension)
grep 'btc' /etc/mime.types
Now, this command will output a line, If that MIME type is already added. It looks like this for particular MIME searches
$ grep 'cpp' /etc/mime.types text/x-c++src c++ cpp cxx cc $ grep 'py' /etc/mime.types application/x-python-code pyc pyo text/vnd.debian.copyright text/x-python py $ grep 'btc' /etc/mime.types
If your extension does not output any lines (as for
btc in this case), or if the lines outputed do not include your extension, you must create a new MIME type. Otherwise your extension already has a MIME type included in the file
If there was no output, or the output given did not include your extension, we must add a MIME type. For that type at command line
gksudo gedit /etc/mime.types
Modify the following text so that the word "extension" is replaced with your file extension (no period mark), add the line to the end of the
mime.types file, and save. Here our extension is bitcoin and we write
btc (NOT .btc) that will be seen as an extension for the bitcoin files.
And copy the modified 'text/extension' part.
In our case it will look like
Save the file and exit.
/etc/mime.types file doesn't works for your extension, then you can try this workaround.
Create a new
.xml file that describes your extension like this & Save it.
<?xml version="1.0" encoding="utf-8"?> <mime-type xmlns="http://www.freedesktop.org/standards/shared-mime-info" type="text/bitcoin-text"> <glob pattern="*.btc"/> </mime-type>
Now add this file into
/usr/share/mime/application folder.After you've added or modified whatever you need, run the command
sudo update-mime-database /usr/share/mime
Now we need to associate an icon with the MIME type. Get an SVG icon and name it "text-extension.svg", or whatever your modified MIME type is named; this will be the icon to represent all instances of the MIME type on your system.
So, We rename the .svg file so that the it matches bitcoin-text.svg (or "insertYourMIMEtype.svg") so that the
slashes are replaced with "-"and there are
no capital letters.
Then simply run the following commands, with 'bitcoin-text' replaced with your MIME type.
sudo cp bitcoin-text.svg /usr/share/icons/gnome/scalable/mimetypes sudo gtk-update-icon-cache /usr/share/icons/gnome/ -f
Relogin and all files ending in the MIME extension will display with that icon.