Programatically change which opens a file type

Operating Systems OS X (Apple) Programatically change which opens a file type

08-13-2009

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Programatically change which opens a file type

Hi there,

If we have 2 apps on our customers machines that can both open files of a certain file extension, is there any way via shell commands to set which application should be the default?

Essentially, I'm hoping to replicate Get Info > Open With > Change All, but using a script.

Thanks in advance!
Dave

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open

OPEN(1) 						    BSD General Commands Manual 						   OPEN(1)

NAME

     open -- open files and directories

SYNOPSIS

     open [-e] [-t] [-f] [-F] [-W] [-R] [-n] [-g] [-j] [-h] [-s sdk] [-b bundle_identifier] [-a application] file ... [--args arg1 ...]

DESCRIPTION

     The open command opens a file (or a directory or URL), just as if you had double-clicked the file's icon. If no application name is speci-
     fied, the default application as determined via LaunchServices is used to open the specified files.

     If the file is in the form of a URL, the file will be opened as a URL.

     You can specify one or more file names (or pathnames), which are interpreted relative to the shell or Terminal window's current working
     directory. For example, the following command would open all Word files in the current working directory:

     open *.doc

     Opened applications inherit environment variables just as if you had launched the application directly through its full path.  This behavior
     was also present in Tiger.

     The options are as follows:

     -a application
	 Specifies the application to use for opening the file

     -b bundle_indentifier
	 Specifies the bundle identifier for the application to use when opening the file

     -e  Causes the file to be opened with /Applications/TextEdit

     -t  Causes the file to be opened with the default text editor, as determined via LaunchServices

     -f  Reads input from standard input and opens the results in the default text editor.  End input by sending EOF character (type Control-D).
	 Also useful for piping output to open and having it open in the default text editor.

     -F  Opens the application "fresh," that is, without restoring windows. Saved persistent state is lost, except for Untitled documents.

     -W  Causes open to wait until the applications it opens (or that were already open) have exited.  Use with the -n flag to allow open to func-
	 tion as an appropriate app for the $EDITOR environment variable.

     -R  Reveals the file(s) in the Finder instead of opening them.

     -n  Open a new instance of the application(s) even if one is already running.

     -g  Do not bring the application to the foreground.

     -j  Launches the app hidden.

     -h  Searches header locations for a header whose name matches the given string and then opens it.	Pass a full header name (such as NSView.h)
	 for increased performance.

     -s  For -h, partial or full SDK name to use; if supplied, only SDKs whose names contain the argument value are searched. Otherwise the high-
	 est versioned SDK in each platform is used.

     --args
	 All remaining arguments are passed to the opened application in the argv parameter to main().	These arguments are not opened or inter-
	 preted by the open tool.

EXAMPLES

     "open '/Volumes/Macintosh HD/foo.txt'" opens the document in the default application for its type (as determined by LaunchServices).

     "open '/Volumes/Macintosh HD/Applications/'" opens that directory in the Finder.

     "open -a /Applications/TextEdit.app '/Volumes/Macintosh HD/foo.txt'" opens the document in the application specified (in this case, TextE-
     dit).

     "open -b com.apple.TextEdit '/Volumes/Macintosh HD/foo.txt'" opens the document in the application specified (in this case, TextEdit).

     "open -e '/Volumes/Macintosh HD/foo.txt'" opens the document in TextEdit.

     "ls | open -f" writes the output of the 'ls' command to a file in /tmp and opens the file in the default text editor (as determined by
     LaunchServices).

     "open http://www.apple.com/" opens the URL in the default browser.

     "open 'file://localhost/Volumes/Macintosh HD/foo.txt'" opens the document in the default application for its type (as determined by Launch-
     Services).

     "open 'file://localhost/Volumes/Macintosh HD/Applications/'" opens that directory in the Finder.

     "open -h NSView" lists headers whose names contain NSView and allows you to choose which ones to open.

     "open -h NSView.h" immediately opens NSView.h.

     "open -h NSView -s OSX10.12" lists headers whose names contain NSView in the MacOSX 10.12 SDK and allows you to choose which ones to open.

HISTORY

     First appeared in NextStep.

macOS								  April 14, 2017							     macOS

OS X (Apple)