The system used to format and organize files on a disk. This includes directory structure, permissions management, metadata, and more. The current default file system for the Mac OS is HFS+

learn more… | top users | synonyms

44
votes
8answers
16k views

Can I make a DIY Fusion Drive?

I have a Mac Mini with two drives: a 256GB SSD and a 500GB HDD. From what I've read, the new Fusion Drive does all of it's magic in software, using the Core Storage APIs. Can I get my setup to ...
33
votes
2answers
751 views

Where should I store command line applications?

When I download command line applications they are located in my ~/Downloads/ directory. But I feel this is wrong place to have a command line application located. Where in the Mac OS X filesystem ...
20
votes
2answers
2k views

Can someone describe the purpose of OSX root level folders in laymen's terms?

Simple and concise documentation on the OSX folder hierarchy is sparse. I'm looking for a simple description of each - what are the functions of each? /private /var /usr /tmp /etc /bin /sbin ...
15
votes
1answer
2k views

Why does OS X require admin privileges to unmount a drive from the terminal using `umount` but not when using Finder?

Anyone can unmount a usb drive from Finder by clicking on the "eject" icon next to it. However, only a user with administrative privileges can unmount a drive from the terminal using umount. Are ...
15
votes
3answers
5k views

Linus Torvalds and the OS X Filesystem

Back in 2008, Linus Torvalds famously said in an interview that "OS X in some ways is actually worse than Windows to program for. Their file system is complete and utter crap, which is scary." I've ...
14
votes
4answers
9k views

How to set to open folder with enter in finder?

I want to set to open a folder in finder with Enter. I know it's possible to open a folder with ⌘ Command + ↓ Down Arrow but I don't like it and I never use it because it's easier to use the ...
13
votes
4answers
40k views

How to write on FAT32 and NTFS from Mountain Lion?

What is the best free software for OS X Mountain Lion for enabling write support for FAT32 and NTFS?
11
votes
3answers
1k views

Problem with “Always Open With” in OS X

I want know how can I apply a software to open all my same document, for example I want to open all my PDF document with Skim but when I right click on it> open with > other and choose my desired ...
10
votes
3answers
18k views

What are the advantages of formatting an external disk as journaled HFS+?

The application Disk Utility /Library/Utilites/Disk Utility.app which is part of the applications that ship with the Mac OS allows to reformat an external disk. Options include: Mac OS Extended ...
9
votes
4answers
3k views

Simplest way to prevent iTunes from automatically launching when iPhone/iPad is connected

Everything is stated in the title. When I connect my iPad or iPhone iTunes automatically launches. What is the simplest way to prevent this from happening?
9
votes
1answer
872 views

Why are the alias so big in filesize in Mountain Lion?

I noticed the alias(es) that I create in Mountain Lion are very big in filesize (for example an alias to a folder is 5.8MB!) Compared to Leopard, they were just about 500KB. Why is this? and is ...
8
votes
5answers
3k views

Why would you choose Alfred over Spotlight?

Mac OS X is already loaded with Apple Spotlight, why use Alfred? What does Alfred bring to the table that Spotlight doesn't?
8
votes
1answer
3k views

What is standard for os x filesystem? e.g. /opt/ vs. /usr/

What does and should go into /opt/ and what should/does go into /usr/? My understanding is that /usr/ used to be for user home directories, but since that exists in /Users/ - what is the purpose now? ...
8
votes
2answers
362 views

Why is there a duplicate entry for my TextMate?

I was changing the default program to open .txt files with and I noticed 2 entries for TextMate. Its one of those little things that annoy me. How can I fix it? I didn't see 2 directors of ...
8
votes
2answers
7k views

Can you reinstall OS X on a FileVault 2-encrypted drive?

I've been researching FileVault 2 to make sure that I understand it before I enable it on my Mac. While reading Macworld's Complete guide to FileVault 2 in Lion, I encountered an unexpected caveat ...
8
votes
3answers
2k views

How can I associate a file extension with a content type?

I have some files with extension "module" and "inc," which are PHP files. When I try to open them, the list of applications that can open them shows only the application I have set as default ...
7
votes
2answers
675 views

Move complete Lion installation to another physical drive

is there a way to completely move my OSX Lion to my new SSD without reinstalling? I came from Windows and Linux to OSX and i thought maybe it is possible to simply change the bootloader config after ...
7
votes
3answers
5k views

How can I rename a Logical Volume Group?

I have noticed that while I can safely change the name of the Logical Volume (LM Volume) in /Volumes (currently: Apple SSD), I cannot find a way to change the name of the Logical Volume Group ...
7
votes
2answers
6k views

How do I rename a file in git that differs by case only?

In my git (Xcode) project, I committed a filename with improper case. Now I went to try to rename it, but when I commit, I get: fatal: Will not add file alias 'MyProject/MyFile.h' ...
7
votes
1answer
3k views

Excessive “Opening application for the first time” dialogs

I often get the dialog box warning me that I'm opening an application for the first time. But, it isn't the first time. Some of these are applications that I use daily. I seem to be getting more ...
7
votes
5answers
2k views

Disable storage of invisible files “._” on my cfs or smb network storage

I use OS X Mavericks and have some company storage drives mounted (using smb or cfs). (smb://username@address.path.toserver.com/directory/data). When I work with files on the drive or copy files to ...
7
votes
1answer
6k views

How to mount ext4 partition on OS X 10.8.2?

I'm new to OS X, I was using Ubuntu till now. All my data are stored on an external drive formated as ext4 system file. Is there any other way to acces this data than installing Virtual Box? I'm ...
6
votes
2answers
2k views

How to change path in Finder by entering the path manually?

It seems that by default there is no way to enter a whole path in the Finder, so instead one should traverse through all the tree to get somewhere deep in the filesystem. Is there anyway to overcome ...
6
votes
4answers
773 views

Shell script to determine the file size in a folder recursively

Can anyone provide me with a shell script that I can run against various folders to see where large files are lurking? Many thanks
6
votes
3answers
2k views

Are the OSX Mavericks tags visible from the command line?

For example, suppose I have a directory structure such as /Users /tlehman /Math algebraic_varieties.tex [tagged: Math, Documentation] projective_geometry.pdf ...
6
votes
4answers
3k views

Keyboard shortcut for launching Apps in Dock

At Windows 7, Win + 1,2,3..9 launches the first, second etc App in taskbar. Is there a similar keyboard shortcut in OSX in order to launch Apps that are in the Dock?
6
votes
4answers
39k views

Easiest way to browse iPhone filesystem

What method of browsing the root filesystem is least likely to make any modifications to it? Hooking to a pc is an option. Jailbreaking is not an option for this question.
6
votes
2answers
1k views

How can I change the keyboard shortcut key to open Quicksilver?

Fyi.. I searched Apple.SE and didn't found an answer, so I am posting here. Currently I open Quicksilver by Ctrl + Shift + spacebar. And my Spotlight preference is Cmd + spacebar. Most of the time I ...
6
votes
6answers
13k views

Is it possible to mount SharePoint as a volume in 10.6?

Background My office uses: Microsoft SharePoint to store and version our documents Microsoft Office, with Microsoft Document Connection to connect to the SharePoint site. Question 1 Can Finder ...
6
votes
2answers
929 views

Options on a Mac for a writable, compressed file system?

I have a SSD drive on my MacBook Pro and I'm constantly running on out of disk space because I need to install and run multiple virtual machines (Linux, Windows etc) on my Mac. Is there a way to mount ...
6
votes
1answer
3k views

How can one determine which user deleted a shared file on OS X Mountain Lion Server

My girlfriend is a lab technician at a small pharmaceutical startup. She created a very important Excel file and placed it in a shared folder on a server that the "IT" guy set up. The server runs ...
6
votes
2answers
5k views

Mounting Ext3 filesystem with OS X 10.7.4 [closed]

I'm trying to mount an Ext3 external USB hard drive in OS X 10.7.4. I installed OSXFUSE (with macfuse compability layer), which worked fine. After that I tried to install EXT2FS but the install ...
5
votes
3answers
4k views

What filesystem does iOS use?

I can't find this information documented anywhere. What filesystem do iOS devices use? Did Apple stick with HFS+? Is it different between devices and iOS versions?
5
votes
2answers
282 views

How are paths to files and folders constructed in OS X?

I need to indicate a right file path to read a .csv file into R on OS X, but how can I find where the file is stored? Looking at Excel files, the file path starts at users/…, but there is no ...
5
votes
3answers
2k views

Opening a terminal window to a specific directory from a bash script

How can I write a bash script in Mac OS X that opens a Terminal window in a specific directory? I'd assume something like: open /Applications/Utilities/Terminal.app But that does nothing (maybe ...
5
votes
2answers
289 views

How to Create New File in Selected Folder Using LaunchBar?

Using Launchbar, I'd like to be able to do the following: Navigate around by normal means in Launchbar > Once I'm in desired folder, I'd like to be able to run a command/action that asks me to enter ...
5
votes
1answer
2k views

File can't be moved by root on OS X

I tried to move a few files to a subfolder on OS X. One refused to move. It said Operation not permitted. I tried again as root: $ sudo mv file subfolder/ mv: rename file to subfolder/file: Operation ...
5
votes
3answers
3k views

Why isn't finder finding all files?

I had a Smart Search for my Photo Stream files located at ~/Library/Application Support/iLifeAssetManagement/assets/sub/, searching for JPG and PNG files. I found that not all files were showing up. ...
5
votes
3answers
2k views

Why is FAT16 limited to read-only with TrueCrypt on Snow Leopard?

I'm experiencing a problem with TrueCrypt. The problem is described elsewhere but not resolved for me. When attempting to mount encrypted containers, the following error is generated: hdiutil: ...
5
votes
1answer
10k views

What is iLifeAssetManagement, and can I delete it?

I have 5 GB of stuff in ~/Library/Application Support/iLifeAssetManagement and I'd like the space back. What is this stuff and how can I reduce its footprint?
5
votes
1answer
5k views

Is it safe to delete ~/Library/Caches/com.apple.iLifeSlideshow/Pictures?

I was just doing a quick audit of the files on my hard drive and noticed that ~/Library/Caches/com.apple.iLifeSlideshow/Pictures is taking up 1.57 GB on my machine! This leads to the following ...
5
votes
3answers
10k views

fsck and Disk Utility won't repair Volume: invalid b-tree node size

I accidentally wrote some .iso data to a disk through dd by mistake. I cancelled the command after just 2 seconds but that was enough to wipe the first EFI partition (200MB) and a bit of the second ...
5
votes
1answer
2k views

Taking forever to move files to the trash

Finder is taking forever to move, rename, etc. files, especially when moving to the trash or emptying the trash. Here is a video ...
4
votes
5answers
4k views

How to batch rename images, in reverse numerical order?

My camera names its images IMG_0001.jpg, IMG_0002.jpg, IMG_0003.jpg, etc. I have about a thousand images and would like to rename them without having to do it manually if possible. Is there a good ...
4
votes
3answers
925 views

How to confirm that a file has copied to a new disk without any errors?

I'd like to copy files from one external drive to a network connected drive. I want to make sure that there are no errors. I know of MD5 hash files that I see for large single files that are download ...
4
votes
2answers
776 views

Will setting a cron job to delete ._ shadow files on a linux share work?

I recently tarred up a directory to send to a remote linux system. When I untarred it, there were ._ files tossed into the target directory. I did a search and found articles of people being ...
4
votes
4answers
34k views

Alternative to Tuxera NTFS and MacFUSE?

Im trying to mount files to an NTFS format drive, I read on the internet that either Tuxera NTFS or MacFuse work for such things. However TuxeraNTFS filled my USB drive with space that should be free ...
4
votes
3answers
141 views

Is there a way to set/unset the execute bit on a file in osx 10.6.8 without using terminal (or bypassing it)?

I would like to do the following: chmod +x filename.txt without using the terminal. Is there a way to bypass the terminal and invoke a kernel system call ? I'd rather not write a program to do ...
4
votes
1answer
2k views

Launching a new instance of something instead opening existing one?

Is it possible to have app launcher(Alfred or Spotlight) to launch a new instance of an app(Finder, Terminal) instead of taking me to existing instance? I know this question: How to make clicking on ...
4
votes
5answers
2k views

Is there a way to find out when a USB flash drive has been last used (on any computer)?

I have a USB flash drive and I believed someone else may have plugged it in their computer and copied some files. Using my Mac, how do I know when was the last time my usb flash drive was plugged ...