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    <p>With Foundation, you can call <a href="http://developer.apple.com/mac/library/documentation/Cocoa/Reference/Foundation/Miscellaneous/Foundation_Functions/Reference/reference.html#//apple_ref/c/func/NSHomeDirectory" rel="nofollow noreferrer">the <code>NSHomeDirectory</code> function</a> to get the absolute path to the user's home directory. You can then use <a href="http://developer.apple.com/mac/library/documentation/Cocoa/Reference/Foundation/Classes/NSString_Class/Reference/NSString.html#//apple_ref/occ/instm/NSString/stringByAppendingPathComponent:" rel="nofollow noreferrer">the path-manipulation methods of NSString</a> or <a href="http://developer.apple.com/mac/library/documentation/Cocoa/Reference/Foundation/Classes/NSURL_Class/Reference/Reference.html#//apple_ref/occ/instm/NSURL/URLByAppendingPathComponent:" rel="nofollow noreferrer">of NSURL</a>, or <a href="http://developer.apple.com/mac/library/documentation/CoreFoundation/Reference/CFURLRef/Reference/reference.html#//apple_ref/c/func/CFURLCreateCopyAppendingPathComponent" rel="nofollow noreferrer">the equivalent function for CFURL</a>, to tack a sub-path onto that.</p> <p>However, please don't put files into the top level of my Home folder unless I, as the user, tell you to.</p> <ul> <li>If you want to save a file at the user's request, run a <a href="http://developer.apple.com/mac/library/documentation/Cocoa/Reference/ApplicationKit/Classes/NSSavePanel_Class/" rel="nofollow noreferrer">save panel</a>, and then save it where the user told you to.</li> <li>If you want to save a preferences file, you probably should be using <a href="http://developer.apple.com/mac/library/documentation/Cocoa/Reference/Foundation/Classes/NSUserDefaults_Class/" rel="nofollow noreferrer">NSUserDefaults</a> or <a href="http://developer.apple.com/mac/library/documentation/CoreFoundation/Reference/CFPreferencesUtils/" rel="nofollow noreferrer">CFPreferences</a>, instead of handling plists yourself.</li> <li>If you have some other reason to save a user-specific file, it should generally go into either <a href="http://developer.apple.com/mac/library/documentation/Cocoa/Reference/Foundation/Miscellaneous/Foundation_Functions/Reference/reference.html#//apple_ref/c/func/NSTemporaryDirectory" rel="nofollow noreferrer">the chewable items folder</a>, <a href="http://developer.apple.com/mac/library/documentation/Cocoa/Reference/Foundation/Miscellaneous/Foundation_Functions/Reference/reference.html#//apple_ref/c/func/NSSearchPathForDirectoriesInDomains" rel="nofollow noreferrer">the Caches folder</a>, or the Preferences folder. The two functions that I linked to are the easiest ways to access those two of those three folders; the harder way, and the only one that works on all three, is <a href="http://developer.apple.com/legacy/mac/library/documentation/Carbon/Reference/Folder_Manager/Reference/reference.html#//apple_ref/c/func/FSFindFolder" rel="nofollow noreferrer">the <code>FSFindFolder</code> function</a>. Unlike most of the Folder Manager, <code>FSFindFolder</code> is not deprecated and is available in 64-bit.</li> </ul> <hr> <h3>Updates from the year 2012</h3> <ul> <li>Nowadays, you should use URLs, not paths. <a href="http://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/NSFileManager_Class/Reference/Reference.html#//apple_ref/occ/instm/NSFileManager/URLForDirectory:inDomain:appropriateForURL:create:error:" rel="nofollow noreferrer">NSFileManager has a method for getting a URL to a desired directory.</a></li> <li>Stapling paths (or file URLs) together does not work in a sandboxed application, because you don't have authorization to access the path you just made up. You need to get the path (or URL) from a system API, whether it's NSFileManager, NSSavePanel, or something else.</li> <li>For saving and restoring file references, use NSURL's security-scoped bookmarks feature.</li> <li>NSUserDefaults and CFPreferences work as expected in a sandbox.</li> <li>The Folder Manager is now fully deprecated as of 10.8.</li> <li>Polluting the user's Home folder is still bad manners.</li> </ul>
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    1. POSaving CFPropertyLists To Users Folder
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    1. USPeter Hosey
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    1. CONSHomeDirectory works really well with NSString's stringByAppendingPathComponent.
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      1. USStephen Blinkhorn
    2. COStephen Blinkhorn: Yeah, but see the rest of my answer. You really shouldn't be putting files in the top level of the Home folder unless I (the user) tell you to in a Save panel, in which case you already have the complete path and don't need to assemble it.
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