`sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer`

You could also do this instead ...

    sudo ln -s /Applications/Xcode.app/Contents/Developer /Developer

Everything you guys answered is correct. But for those who hit the following error are missing a step:


Error: 

      &quot;xcode-select: Error: Path &quot;/Applications/Xcode.app/Contents/Developer&quot; is not a directory.&quot;


Missing step:

    Double click your xcode 432.dmg. Now don&#39;t double click the xcode.app to use it. Instead copy it /Applications folder and then open it from there to install xcode.

Now use terminal command

     sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer

Thats it. Your error won&#39;t happen again and
 Filemerge will work now.




This solved for me:

Mostly this error occurs when you have installed a newer version of xcode. And the command line tools are yet to be initialized.

To resolve this: Go under Xcode Preferences &gt; Locations (tab) &gt; And the bottom options is Command Line Tools. Please select the Xcode version for tools.

Example (For Xcode 8.3.3): Go under Xcode Preferences &gt; Locations (tab) &gt; And the bottom options is Command Line Tools. Select Xcode 8.3.3 (7D1014).

I&#39;m using [KnockoutJS][1] version 2.0.0

If I&#39;m looping through all properties of an object, how can I test whether each property is a `ko.observable`?  Here&#39;s what I&#39;ve tried so far:

        var vm = {
            prop: ko.observable(&#39;&#39;),
            arr: ko.observableArray([]),
            func: ko.computed(function(){
                return this.prop + &quot; computed&quot;;
            }, vm)
        };

        for (var key in vm) {
            console.log(key, 
                vm[key].constructor === ko.observable, 
                vm[key] instanceof ko.observable);
        }

But so far everything is false.


  [1]: http://knockoutjs.com/

Determine if an object property is ko.observable

I began organizing my code to day into seperarate .cs files, and in order to allow the methods that work with the UI to continue to do so I would create the .cs code under the same namespace and public partial class name so the methods could be inter-operable. 

My header look like this in four files, including my main core file that calls: 

    public shell()
    {
    InitializeComponent(); 
    }

Header area of .cs files that work with the UI (and seem to be causing this new conflict):

    using System;
    using System.Windows.Forms;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.Data;
    using System.Drawing;
    using System.Linq;
    using System.Text;
    using System.Text.RegularExpressions;
    using System.IO;
    using System.Data.SqlServerCe;
    using System.Diagnostics;
    using System.Threading;
    using System.Collections.Specialized;
    using System.Net;
    using System.Runtime.InteropServices;
    using watin = WatiN.Core;
    using WatiN.Core.Native.InternetExplorer;
    using System.Web; 
    
    
    namespace WindowsFormsApplication1
    {
    
        public partial class shell : Form
        {

Now when I try to debug/preview my application (BTW this is a Windows Application within Visual Studio 2010 Express) I get this error message:

&gt;    Does not contain a static &#39;main&#39; method suitable for an entry point

I looked in the application properties in Application-&gt;Startup object, but it offers me no options. How can I inform the application to begin at the .cs file that has my InitializeComponent(); command? 

 - I&#39;ve looked around so far without a solution.
 - The properties on each .cs file are set to &#39;Compile&#39;.
 - I do not see an App.xaml file in my Solutions explorer but I do see a app.config file.


I&#39;m still very new and this is my first attempt at an organizing method with c# code.

Does not contain a static &#39;main&#39; method suitable for an entry point

I just upgraded XCode to 4.3.1.
I&#39;m using a script to build (and then deploy through Testflight) my app.
But I now receive this error:

&gt; Error: No developer directory found at /Developer. Run /usr/bin/xcode-select to update the developer directory path.

I&#39;ve no /Developer dir in my machine: how can I fix it?

How can I resolve &quot;Error: No developer directory found at /Developer&quot;?

I just upgraded XCode to 4.3.1.
I'm using a script to build (and then deploy through Testflight) my app.
But I now receive this error:
> Error: No developer directory found at /Developer. Run /usr/bin/xcode-select to update the developer directory path.
I've no /Developer dir in my machine: how can I fix it?

I have installed xcode 4.3.1 on my machine running Lion. 

I can&#39;t find the Network Link Conditioner tool anywhere.

I have checked the utilities folder, also the `xcode/contents/developer/*` directories.. no such luck.

Do I need to install specific components or has this tool been removed or renamed recently?

Installing Apple&#39;s Network Link Conditioner Tool

I want git to ignore my `UserInterfaceState.xcuserstate` file in my XCode4 project, but where should I put the `.gitignore` file?, is it inside the `.git` folder? or out? The `.git` is in same folder with the `ProjectName.xcodeproj` file

.gitignore file, where should I put it in my xcode project?

I would like to remove from Mac OS-X taskbar (Dock) the XCode&#39;s recent project menu items.  
Everywhere I am searching it says the `File-&gt;Open Recent-&gt;Clear Menu` it will clear, but not.  
It doesn&#39;t clear from Dock, it clears from inside the `XCode` Recent menu.  
I believe I should dig somewhere is OS filesystem, but I don&#39;t know where.

It was an `XCode 4.2` intalled, I did a complete uninstall and installed version 4.3.  
But I couldn&#39;t clear the Dock&#39;s projects menu at version 4.3 either!

 

remove xcode recent projects from dock menu

How do I profile my app in xcode - the menu item is disabled?

Product &gt; Profile is disabled

How do I profile my app - the menu item is disabled?

What is the difference between GDB &amp; LLDB debuggers? I recently upgraded my Xcode version from 4.2 to 4.3 &amp; started getting warning to upgrade my debugger from GDB to LLDB.

GDB Vs LLDB debuggers

When I try to run bundle (bundle install), I all the time get


    Installing pg (0.13.2) with native extensions 
    Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
    
            /Users/ryan/.rvm/rubies/ruby-1.9.2-p290/bin/ruby extconf.rb 
    checking for pg_config... no
    No pg_config... trying anyway. If building fails, please try again with
     --with-pg-config=/path/to/pg_config
    checking for libpq-fe.h... no
    Can&#39;t find the &#39;libpq-fe.h header
    *** extconf.rb failed ***
    Could not create Makefile due to some reason, probably lack of
    necessary libraries and/or headers.  Check the mkmf.log file for more
    details.  You may need configuration options.
    
    Provided configuration options:
    	--with-opt-dir
    	--without-opt-dir
    	--with-opt-include
    	--without-opt-include=${opt-dir}/include
    	--with-opt-lib
    	--without-opt-lib=${opt-dir}/lib
    	--with-make-prog
    	--without-make-prog
    	--srcdir=.
    	--curdir
    	--ruby=/Users/ryan/.rvm/rubies/ruby-1.9.2-p290/bin/ruby
    	--with-pg
    	--without-pg
    	--with-pg-dir
    	--without-pg-dir
    	--with-pg-include
    	--without-pg-include=${pg-dir}/include
    	--with-pg-lib
    	--without-pg-lib=${pg-dir}/lib
    	--with-pg-config
    	--without-pg-config
    	--with-pg_config
    	--without-pg_config
    
    
    Gem files will remain installed in /Users/ryan/.rvm/gems/ruby-1.9.2-p290/gems/pg-0.13.2 for inspection.
    Results logged to /Users/ryan/.rvm/gems/ruby-1.9.2-p290/gems/pg-0.13.2/ext/gem_make.out
    An error occured while installing pg (0.13.2), and Bundler cannot continue.
    Make sure that `gem install pg -v &#39;0.13.2&#39;` succeeds before bundling.

I use Mac OS X 10.6, the version of installed PostgreSQL is 9.1. I found the problem is in the **libpq-dev**, how could I install/fix that?

Rails 3 - can&#39;t install pg gem

following the suggestion in this Archlinux wiki, in the [page about tmux](https://wiki.archlinux.org/index.php/Tmux) I remapped the command key prefix to `C-a`, to mimic GNU screen and to have something easier on the keyboard than `C-b`. So my .tmux.conf became this:

    set -g default-terminal &quot;screen-256color&quot;
    unbind C-b
    set -g prefix C-a
    set-window-option -g mode-keys vi
    bind h select-pane -L
    bind j select-pane -D
    bind k select-pane -U
    bind l select-pane -R

However, while in screen it was possible to use `C-a a` to jump to the beginning of line, this does not work any more in tmux. As a sidenote, I&#39;m using iTerm2 without the tmux integration.

Does anybody know how to solve this?

Thanks!

Howto go to beginning of line in tmux after remapping prefix to CTRL+A?

I would like install R on my laptop Mac OS X version 10.7.3

I downloaded the last version and I double click on it and it was installed, when i start up I get the following error, I searched in internet but I could not solve the problem, any help would be appreciated 

the errors are 
&gt;During startup - Warning messages:  
1: Setting LC_CTYPE failed, using &quot;C&quot;   
2: Setting LC_COLLATE failed, using &quot;C&quot;   
3: Setting LC_TIME failed, using &quot;C&quot;   
4: Setting LC_MESSAGES failed, using &quot;C&quot;   
5: Setting LC_PAPER failed, using &quot;C&quot;   
[R.app GUI 1.50 (6126) x86_64-apple-darwin9.8.0]  

&gt;WARNING: You&#39;re using a non-UTF8 locale, therefore only ASCII characters will work.
Please read R for Mac OS X FAQ (see Help) section 9 and adjust your system preferences accordingly.
[History restored from /Users/nemo/.Rapp.history]

Installing R on Mac - Warning messages: Setting LC_CTYPE failed, using &quot;C&quot;

In the linux shell, the following command will recursively search and replace all instances of &#39;this&#39; with &#39;that&#39; (I don&#39;t have a Linux shell in front of me, but it should do).

    find . -name &quot;*.txt&quot; -print | xargs sed -i &#39;s/this/that/g&#39;

What will a similar command on OSX look like?

Recursive search and replace in text files on Mac and Linux

I&#39;m trying to automate the process of building apps for our clients using bash scripts running on a Mac Mini Server (OSX 10.7). 

My script is based on the spectacularly useful script from github originally posted at https://gist.github.com/949831

I&#39;m building the app using xcodebuild, and then signing and embedding the mobileprovision file using xcrun.

When I do all this with a mobileprovision file I manually installed into Xcode using the GUI (e.g. double-clicking) it works fine. If I simply try to use a mobileprovision file copied onto the server with SCP it fails (Code Sign error: Provisioning profile &#39;123abc123&#39; can&#39;t be found.) 

Presumably this is because the file isn&#39;t &#39;installed&#39;.

Is there any way to install the mobileprovision file from the terminal? I&#39;m using SSH so using things such as the &#39;open&#39; command won&#39;t work.

Thanks!


Can an Xcode .mobileprovision file be &#39;installed&#39; from the command line?

I am doing command line xcodebuild using a shell script.  My problem is if I open and close the `xx.xcodeproj` file once and then use that command it works well.

Somehow if I get deep into the file changes, this `project.xcworkspace` is the only file that has changed.  Is this file valid and should I check it into version control?
Will this cause any issues?

I&#39;ve heard that it&#39;s as important as `.pbxproj`: is this true?

I couldn&#39;t find any valid documentation which talks about the roles and responsibilities of various files in the xcode project files.  Please provide links which help me to understand that.

Is the project.xcworkspace file important?

![enter image description here][1]


  [1]: http://i.stack.imgur.com/hFbKg.jpg



my Xcode is  Version 4.4.1  

The project worked perfect before updating to this newer version, but now it stopped working



Choose a destination with a supported architecture in order to run on this device

Running in Xcode is correctly, but when I want to use command line with 
   $ /usr/bin/xcodebuild -scheme projectA -workspace projectA.xcworkspace -configuration Debug clean build 

And come up with the following.

    === BUILD NATIVE TARGET projectA OF PROJECT projectA WITH CONFIGURATION Debug ===
    Check dependencies
    No architectures to compile for (ONLY_ACTIVE_ARCH=YES, active arch=x86_64, VALID_ARCHS=armv7 armv7s).

In Build Settings are:

 - Architectures: Starndard (armv7, armv7s)
 - Base SDK: Latest iOS (iOS 6.0)
 - Build Active Architecture Only: Debug Yes, Release No
 - Valid Architectures: armv7 armv7s

After I change `Build Active Architecture Only = No`, then the build was BUILD SUCCEEDED.

What is the suggestion setting for this situation, to build success under commend line mode? Thanks.

No architectures to compile for (ONLY_ACTIVE_ARCH=YES, active arch=x86_64, VALID_ARCHS=armv7 armv7s)

I have a curios issue. 

I have a project that I&#39;ve worked on and always built from the XCode IDE, and it worked fine. Now I&#39;m setting up Bamboo to build the project and as such am building it from the command line.

The issue is, if I check my code out of GIT and then use xcodebuild to build it it says that the scheme cannot be found, but if I open the project, it builds and if I then try to build it again from the command line with the same command, it works.

What magic is XCode doing when I open the project or am I doing something dumb, maybe excluding a file in my .gitignore that I shouldn&#39;t?


Content Type	Original Author	Original Content on Stackoverflow
Question	Giordano Scalzo	View Question on Stackoverflow
Solution 1 - Xcode	Jim	View Answer on Stackoverflow
Solution 2 - Xcode	Jeremy	View Answer on Stackoverflow
Solution 3 - Xcode	Deepukjayan	View Answer on Stackoverflow
Solution 4 - Xcode	Samman Bikram Thapa	View Answer on Stackoverflow

How can I resolve "Error: No developer directory found at /Developer"?

Xcode Problem Overview

Xcode Solutions

Solution 1 - Xcode

Solution 2 - Xcode

Solution 3 - Xcode

Solution 4 - Xcode

Does not contain a static 'main' method suitable for an entry point

Determine if an object property is ko.observable

Attributions