I'm looking for a comprehensive list of file signature for extensions. In particular, I have some trouble to find the file signature for the extension .HEIC (and .HEIF). Do you know where is it possible to get it?
You can use a hexadecimal file viewer in any OS.
For a comprehensive list of file signatures, please check https://www.filesignatures.net/
To check yourself using Windows, open a PowerShell prompt and type the following command for your file (https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.utility/format-hex?view=powershell-7.1):
PS> format-hex c:\my.heic
Related
I use the windows 10 pro version and open the command prompt as the administrator to run the windows commands in my laptop. Using the assoc command to change the file extension file to another different (e.g. assoc .jpg=txtfile), I find nothing changed after running it and still that jpeg file opens with the regular program instead of notepad. In addition I can see the only change in by typing just the assoc and running it when a list of extensions belonging to different programs appears. Fo instance I have changed the .jpg file to txt file that it shows only as '.jpg=txtfile" in the list but tyat is still opened in jpeg program not notpad? Is anyone here to help me with clearly. Thanks
You need to use ftype as well. I have a link saved to MS docs that says it is up-to-date till Win8: https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-R2-and-2012/cc771394(v=ws.11).
Maybe nothing has changed in Win10, but you get the idea from the above and can Google it for Win10.
When running a file which has an unknown extension (lets say test.nope) from the command line or a batch file - using test.nope, call test.nope or start test.nope - you are presented with a window asking you to "Choose the program you want to use to open this file" (in Windows 7, presumably in most Windows OS's).
Is it possible to suppress this window?
My initial thought was to check if the extension exists in the %PATHEXT% variable before attempting to open the file. However, this does not contain all known file extensions. For example, though the .py extension is not in my %PATHEXT% variable, Python scripts are still opened correctly.
An alternative to a direct registry query (as suggested by #Mitch) is to use the command line utility assoc
assoc .nope
If there is no application registered for the file extension it produces
C:\>assoc .nope
File association not found for extension .nope
If an association is found (for instance, for the .docx extension), it produces
C:\>assoc .docx
.docx=Word.Document.12
You might also find ftype useful. It returns the command line for the file type returned by assoc (I have Office installed in a non-default location, as you can see):
C:\>ftype Word.Document.12
Word.Document.12="D:\Microsoft Office\Office12\WINWORD.EXE" /n /dde
File types are registered in HKCR\ (full documentation available from MSDN). You can find out if a type is registered by checking for the existence of the key. In a batch file, you could use the reg command to do so.
reg query HKCR\.txt || echo This will never print
reg query HKCR\.foobartxt || echo Could not find foobartxt
That being said, file types can be defined and named without having a default handler. Further, those which have default handlers may not have command lines - the file may be launched via DDE or COM.
I would like to open a PDF in Photoshop from the command line. My current issue right now is that the default application for opening PDFs is Adobe Acrobat. I'm wondering if there is any parameter I can pass to specify which program to use when opening a file.
In other words, I want to emulate the option of "Open-with" when you right-click a file to open it with the non-default application, but from the command line.
I do not want to change the default application for PDFs to be Photoshop.
Any ideas?
All you need to is provide the filename as a command line argument:
photoshop <path to file>
(<path to file> needs to be quoted if it contains spaces)
For example:
photoshop "C:\Users\csterling\Documents\some document.pdf"
If the directory containing photoshop.exe isn't in your Path environment variable, you'll need to provide the full path:
"C:\Program Files\Adobe\Photoshop\photoshop" "C:\Users\csterling\Documents\some document.pdf"
This isn't a feature of the command prompt, it's a feature of the executable, i.e. photoshop.exe has to be programmed to accept a file to open as a command line argument. Fortunately, it is, as are the majority of Windows applications that operate on files.
In case you want this to work with relative path in PowerShell, here is the script:
function photo
{
$the_filename=resolve-path $args[0]
photoshop $the_filename
}
Then you can just type:
cd C:\Users\csterling\Documents
photo mypic.jpg
You can do it by using the start command:
start <program-name> <file-path>
In your case, you would have to do something like this:
start photoshop D:\open.pdf
Unfortunately, the current version of Photoshop doesn't support this operation out of the box. You can open the program: start "path_to_photoshop.exe", but there is no way to pass it a file to open. If you really want to do it, you will need to get something like this: https://www.eulanda.eu/en/access-photoshop-api-via-powershell-script. Sorry, I wish I had a better answer, especially since I wanted to be able to do this for a program I was working on.
I am using windows source insight. In this only the basic text editor is available. Is there any vim plugin available to use it in windwos source insight?
According to the docs (search for ShellExecute), you should be able to invoke a ShellExecute with an arbitrary program. If VIM is associated with a certain file as editor, this should work:
ShellExecute edit <yourfile>
If VIM is for some strange reason not the default editor for a certain file, you should try
ShellExecute "" C:/Path/to/vim.exe <yourfile>
Thay way, you should be able to call any external tool from Source Insight.
add customer command in source insight and bind a new short key.
"C:\Program Files (x86)\Vim\vim81\gvim.exe" --remote-silent +%l %f
In Windows, a command called convert is used to convert the filesystems. When you type convert, it will ask you to specify a filesystem.
In ImageMagick, convert command is used for image processing.
The problem is, even after setting the environment variable for ImageMagick convert, the tool doesn't get invoked. It calls only the Windows convert command. How to override that?
This is an old question, but the current solution with ImageMagick 7 is to use the "magick" command in place of "convert".
This is an old question, but I encountered this problem today, and this is my solution in Windows 7.
Windows convert.exe is located in folder C:\Windows\System32, so you have to modify the Windows PATH variable by putting the ImageMagick path (for example C:\Libs\ImageMagick-6.8.8-4) before the path that loads System32 (ie. %SystemRoot%\System32).
This will cause all ImageMagick executables to take priority over any similarly named system executables, which should do what you want but may cause unexpected behaviour.
Also, when you want to use the system convert.exe, you'll have to specify the full pathname such as C:\Windows\System32\convert.exe.
Renaming the ImageMagick convert.exe worked well for me.
I didn't like using full path each time, and changing the system PATH variable isn't possible for me on the work PC.
After renaming convert.exe to imgconvert.exe, no other changes were needed. You could now use the new command anywhere from the command line without it being confused with the intrinsic Windows file system convert
Edit: As of version 7.0, the command is now magick.exe, which no longer clashes with any native windows commands. So downloading the latest version if possible should solve the problem as well.
Did you logoff and login?
Or specify the Imagemagick's convert by providing the complete path
In powershell you can run this: $env:Path = "C:\path-to-convert\;$env:Path"
Now the imagemagick convert exe gets found because it comes first in the path.