Lion is the marketing name for OS X v10.7, the seventh major upgrade to OS X. As of this release, Mac was dropped from the marketing name of "Mac OS X".

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2answers
17k views

Why are some Mail messages shown as empty with “This message has no content”?

Sometimes new messages come in and Mail (on OS X Lion and Mountain Lion) shows them as empty, with "This message has no content" in the preview column. The message is empty in the full message view ...
14
votes
4answers
3k views

Macbook Pro with Lion: scrolling via trackpad vs. mouse

So the default scrolling behavior for the trackpad in Lion is to scroll in the direction of your finger movement similar to the iPad. This can be changed in the trackpad preferences by un-checking ...
14
votes
5answers
13k views

Chax with Mac OS X Lion?

Has anybody tried Chax with Mac OS X Lion? I got it to install perfectly, but I do not see a Chax tab in iChat preferences.
14
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4answers
14k views

Copy and Cut sometimes don't work [closed]

My system is kept fully up to date and I still see this problem intermittently, although not as often as I used to; I would say that this has not been fully fixed. If there are any workarounds ...
14
votes
2answers
3k views

Why can't I open DMG files which reside on a read-only NFS filesystem?

I've discovered a strange problem... if I have disk image files (DMGs) which reside on a read-only NFS share, I cannot open these in Mac OS X 10.7.5. The same files open fine when accessed over AFP. ...
13
votes
8answers
3k views

Add an up button to the Lion Finder?

Is it possible to add a button to the Lion finder that goes up a directory? I looked at the buttons available under customize and didn't see one, but thought there might be a hack out there.
13
votes
2answers
7k views

How can I delete saved commands from Terminal?

As all of you know, Mac OS X stores all commands that run from Terminal in Terminal itself, however, I want to delete (for example) the last 3 commands from the terminal. How can I do this?
13
votes
1answer
36k views

How can I re-map Mail's “Sent Messages” folder to an IMAP server's “Sent Mail” folder?

I use Mail to connect to a traditional IMAP server (non-Gmail). I've noticed that all the messages I send are placed in Mail's "Sent" folder and that Mail is translating this folder to a server folder ...
13
votes
5answers
7k views

How can I open a Finder window in Desktop without switching to another one?

I have these five desktops with a dozen of full screen apps and feel very happy. Say I'm at right Desktop 5 now. (Sadly my picture is deleted since it wasn't uploaded to the site hosting service) ...
13
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9answers
8k views

Can an app window be minimized by clicking its Dock Icon?

Something that bothers me as Windows User on OSX that I can't minimize an App Window by clicking the Dock Icon of the application. Is there a hidden setting for enabling this behavior or an utility ...
13
votes
1answer
936 views

How can I switch dialog buttons using the keyboard?

Whenever I'm trying to close a file that has been changed, I get the save file dialog I remember that the Don't Save button used to have focus, so I could press it using Spacebar, while pressing ...
13
votes
1answer
20k views

No .bash_profile in OS X Lion?

I just did a clean install of OS X Lion and I see that now I have no .bash_profile file in my home directory. Should I create this by hand? (I want to save in it some alias.) Thank you. PS : The ...
13
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4answers
2k views

Is there a way to get Terminal on Lion to start up cleanly (without the buffered history)?

How can I prevent Terminal from showing me my old output when it starts? I would like it to always start with a clean window.
13
votes
2answers
2k views

why does OSX add extra '._<filename>' when I tar a directory?

I'd just like to know why if I "tar -czf" a file/directory, osx adds a: ._ for each file? I see these when I untar in linux. Or when I work with the uncompressed project in eclipse as it doesn't ...
13
votes
1answer
848 views

How to access a clicked URL in a URL handler application created in Automator

I'm currently trying to modify the default URL handling behavior in OS X. I would like, when clicking on any link outside of a web browser, to copy this URL to the pasteboard instead of opening it in ...
13
votes
7answers
6k views

With multiple displays: how best to keep the Dock to one side, and on the same display as the menu bar?

I currently have the Dock to the left. In the Displays pane of System Preferences, I have the external display (if present) configured to be on the left side of the main built-in display; and the ...
13
votes
8answers
3k views

Which text editors take advantage of Lion's Versions feature?

I've been a fervent user of Textmate for many a year, and I hope to continue to be one. However, the versions feature of OSX seems like a great and easy to use idea. I'm mostly doing HTML, CSS and ...
13
votes
2answers
3k views

Lion version of vim crashing repeatably - caught deadly signal SEGV

whenever I work on multiple files in different vim buffers/tabs and do a :w to save, vim crashes with a segmentation fault. I'm using vim 7.3 that came long with Lion (Actually with SnowLeopard ...
12
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6answers
14k views

Unsaved Files in OS X Lion

Where do unsaved files go in Lion? I quit TextEdit without saving since I had no intention of saving, but with autosave the file still got save somewhere since when I reopen TextEdit the file I was ...
12
votes
4answers
24k views

Reducing Lion OS Footprint by removing unnecessary files/folders

I am trying to downsize my iMac 640Gb disk to make it fit onto a 120Gb (113Gb usable) SSD. The total size of use files is currently approximately 340Gb, of which my home folder accounts for 265Gb ...
12
votes
3answers
25k views

Changing Creation Date of a file

Could you please let me know how I can change the creation date of a file in Lion. I realise there is the touch-t command but that does not work in Lion. A couple of people have mentioned another ...
12
votes
10answers
5k views

Is screen zoom broken in Lion?

For years I've zoomed the whole Mac OS X screen with Control ⌃ + two finger scroll on the trackpad. It was very useful when giving demos and when wanting to zoom in on a YouTube video. Since I ...
12
votes
4answers
4k views

Is there a way to make Preview not open all previously opened files?

Usually when I use Preview, it is when I see a .jpg or .png and I double click on the file to take a look at the file, but sometimes Preview will open up all the .pdf and .png I opened previously, ...
12
votes
4answers
14k views

Problems with font rendering on a MacBook Pro using external 24" LCD

I have a 24" HP LP2475w at my home and 23" Apple Cinema Display at work. Today when I turned on my laptop at work, I noticed that all fonts look perfect (after having an issue with rendering for the ...
12
votes
4answers
14k views

How can I remove a folder that no longer exists from my Finder sidebar in Lion?

There is a folder in my favorites in the sidebar of the finder on my Mac. That folder no longer exists, but for some reason it started showing up again as soon as I upgraded to Lion When I ...
12
votes
3answers
8k views

How do I run VI with colors on Lion?

I'm looking to enable color syntax highlighting in vi. I just enabled colors in Terminal via here. Any ideas on how to enable this? NOTE: Usually on Linux when I open vi with vi file.txt and it opens ...
12
votes
3answers
19k views

In Lion, how can I configure to not automatically re-open recent files that weren't closed?

For example: I opened some files in Excel, then I close Excel, without close each file (ex.: command + Q). In the next time that I will open Excel, it is going to open my recent files that weren't ...
12
votes
11answers
52k views

Why is Apple hardware test (AHT) not loading when pressing key D on system start?

I purchased a Late-2011 MacBook Pro 15" used a month ago. At the time of purchase, I successfully ran the Apple Hardware Test. I've since installed a new SSD and aftermarket RAM. The computer appears ...
12
votes
5answers
12k views

Where does $LANG variable gets set in Mac OS X?

I've used wget for the first time after installing Lion OS X and I've noticed that wget got localized to my native language. Running set command in terminal showed that my LANG variable represents my ...
12
votes
7answers
3k views

How can I create a Saved Search that excludes a specific folder from the results?

I'm trying to set up a Saved Search of my Mac that will exclude files in a folder called 'XYZ' from the search results. The reason is because I'm getting a ton of false positives from that folder that ...
12
votes
5answers
37k views

How can I create a multipage PDF from JPG's in Preview?

I just upgraded to Lion recently. When I was on Snow Leopard, creating a multi-page PDF document in Preview was simple: I would open up the image Save it as a PDF Open up the PDF Open up the panel ...
12
votes
4answers
1k views

How can I improve/replace View Source in Safari?

As a new convert to Safari, I am astonished by how unbearably ugly default page source view is. The font is miserably small and unaliased, leave alone color highlighting. Is there a way to enhance ...
12
votes
5answers
16k views

Searching by file name (as opposed to name and contents) in Lion

In earlier versions of OSX, when you search in a Finder window, it gave you the choice of searching by contents or file name. In Lion this choice seems to have disappeared, I can only search by ...
12
votes
4answers
18k views

MacBook Air with small SSD, BootCamp, Windows 7. Can I use an external hard disk for dual boot?

I'd like to setup a dual boot onto my MacBookAir 128GB, with Microsoft Windows 7 Ultimate in BootCamp. However, I'm already close to the 128GB limit (games + CS suite + Eclipse + XCode + a lot of Web ...
12
votes
3answers
21k views

Reinstall Mac OS X Mountain Lion before selling a Mac

I want to sell my laptop (Macbook Pro late 2011). I have erased my disk drive but it seems that I cannot reinstall Mac OS without an Apple ID. At the origin my mac was shipped with Lion, I have ...
12
votes
2answers
4k views

Does “Secure Empty Trash” securely delete the hidden version files for documents in the Trash in OS X Lion?

The new Versions feature in Lion creates hidden files that store old versions of the document you're working on in case you want to revert back to some older version of the document. If I drag a ...
12
votes
1answer
3k views

In Lion, if I keep pressing a key, why doesn't it repeat?

I don't know if there are any settings to toggle, but I figured out that if I keep pressing a button on my keyboard it doesn't repeat it and displays only one character! Can this be fixed to go back ...
12
votes
3answers
8k views

Mac App Store - how to check which account was used to buy app

I'm trying to update Growl, however App store says "To update this application, log in with account which was used to buy this application". The thing is that i don't have any other Apple ID. Is it ...
12
votes
5answers
55k views

Enable URL rewriting (mod_rewrite) using .htaccess files in ~/Sites on Lion

I cannot get mod_rewrite to work on Lion. I am developing a number of websites locally, in ~/Sites, using .htaccess files. I am on 10.7.3 and I have not touched any configuration files except for ...
12
votes
7answers
34k views

Is there a Windows remote desktop client compatible with Lion's virtual display feature?

With Lion, you can use screen sharing to connect to a "virtual display", meaning that you log in to a new session instead of 'hijacking' the currently active one. Is there a Windows program that can ...
12
votes
4answers
8k views

Can i change the default Mac App Store install folder?

I prefer to have all applications installed per-user, to ~/Applications/ rather than globally. The default location for apps installed from the Mac App Store is the global applications folder located ...
12
votes
4answers
4k views

Why are my plists in ~/Library/Preferences accompanied by a matching lockfile in Lion?

$ cd ~/Library/Preferences $ ls -1 | grep plist | head -10 AddressBookMe.plist com.adiumX.adiumX.plist com.adiumX.adiumX.plist.lockfile com.apple.AddressBook.plist com.apple.AddressBook.plist.lockfile ...
12
votes
2answers
9k views

NTFS-3G unmounts NTFS partitions because it “did not receive signal in 15 seconds”—what signal?

After upgrading to Lion, NTFS-3G has been encountering problems. I uninstalled NTFS-3G and MacFUSE, reinstalled them and rebooted; but the problem still exists: After connecting an USB-disk that has ...
12
votes
2answers
5k views

How can I check for available entropy?

On linux systems, one can check for available entropy (useful to know if you're tapping /dev/random for any PRNG purposes) with cat /proc/sys/kernel/random/entropy_avail However, there is no ...
12
votes
3answers
7k views

MTMFS consuming an entire CPU core and fans running full bore with Lion

You may be aware that Lion introduced MTMFS, the Mobile Time Machine File System. I've had a couple of instances now where MTMFS has been chewing up an entire core of my dual-core (mid 2009) MacBook ...
11
votes
6answers
3k views

Why doesn't AirDrop work on older network adapters?

Apple has stated that AirDrop will support only the following models: AirDrop supports the following Mac models: MacBook Pro (Late 2008 or newer) MacBook Air (Late 2010 or newer) ...
11
votes
4answers
7k views

How can I find the size of multiple folders?

When I highlight several folders in Finder and do a get info, I get an info window for each folder. Is there a way to get a single window showing size of all folders highlighted?
11
votes
5answers
13k views

Create global shortcut to run command line applications

What steps do I need to run a command line program via a global shortcut? I setup Automator to create a new Run Shell Script and tried to assign a shortcut in System Preferences -> Keyboard -> ...
11
votes
8answers
42k views

How can I copy the OS X system image from primary HDD to new SSD?

I bought a 240 GB SSD to replace the 500 GB primary HDD in my new MacBook Pro. How do I clone the current Lion system image on my 500 GB HDD to the SSD? I want to clone the entire drive not just copy ...
11
votes
3answers
16k views

How do I disable Spotlight?

How can I disable Spotlight completely on Mac OS X Lion? It's using up a lot of resources and I never really use it, so I want to disable it. The only feature I might want to keep is the icon in the ...