Re: what is the difference between open /Applications/TextEdit.app and /Applications/TextEdit.app/Contents/MacOS/TextEdit
Re: what is the difference between open /Applications/TextEdit.app and /Applications/TextEdit.app/Contents/MacOS/TextEdit
- Subject: Re: what is the difference between open /Applications/TextEdit.app and /Applications/TextEdit.app/Contents/MacOS/TextEdit
- From: Charles Srstka <email@hidden>
- Date: Mon, 8 Mar 2010 10:09:35 -0600
On Mar 8, 2010, at 9:17 AM, Arun wrote:
> Hi All,
>
> What is the difference between the following two commands
>
> 1. open /Applications/TextEdit.app
> 2. /Applications/TextEdit.app/Contents/MacOS/TextEdit
>
> Both launches TextEdit.app if i type both the commands in Terminal. Also in
> Leopard if i use "open" then i can't pass any program arguments to my cocoa
> app.
> So is there only one way (type 2) to pass command line arguments to cocoa
> app in Leopard
The ‘open’ command will do the same thing that double-clicking the app in the Finder would do, so if the app’s already open, it will simply bring that app to the front (and open a new document if there’s not already a window open). Executing the binary itself can lead to multiple instances of the same app being open.
Note that the ‘open’ command is just a wrapper around APIs provided by the system, so in a Cocoa app, it would make more sense to use those directly instead of fork/execing a command-line program. You can either use the LaunchServices APIs found in /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Headers/LSOpen.h, or if you prefer a nice easy-to-use Objective-C wrapper, NSWorkspace has a decent number of openURL:, openFile:, and launchApplication: methods for you to choose from.
Charles_______________________________________________
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