A file system is the specification of how files in a computer should be stored, named and organized. This tag should be used for generic file system questions. For specific file system questions (FAT, NTFS, ext4, ...) use the appropriate tag instead.

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Tweak read/write speed of a file on a harddrive

I have a "green" (environmental) harddrive from Western Digital which automatically puts back the Read/Write head as soon as the harddrive gets idle. (~25 seconds) When that occurs, the hard drive ...
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Which system is this?

I'm working on a project that build its image .qcow2 based in a temporary file system generated in /tmp/ folder. It looks like this: $ls -la /tmp/ -rw------- 1 root root 7G Jan 30 09:55 ...
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GlusterFS: Different filesystems for bricks?

I'm currently working on a small cluster (~32 nodes) where a couple nodes (8 of them) have some extra disks (3x3TB) attached to them. The filesystem on all these nodes right now is ext4. Using ...
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Viewing the date a file was last opened from a shared folder on a Windows 7 PC

Suppose you have an application on a Windows XP PC that is accessing jpeg files from a share folder on a Windows 7 PC. I need to see which of those files have been opened recently, and I would prefer ...
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How do I view raw system memory of a running process?

I am watching a video series where someone is changing memory of a program that is in runtime. I am trying to do the same thing but have a different operating system. He is able to locate all running ...
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Format a drive to show larger size

How would I format a drive so the filesystem shows a size that I tell it to instead of how much it actually has? If I can't do it with the filesystem how do the scammers that sell them do it?? Like ...
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SSD seems to be read-only, nothing can be written to it (linux ext4 filesystem)

After two week of normal use my new SSD began to work strange. Now it seems that no file is written to it. An example: root@hooker3:~# mount |grep ssdhome /dev/sda3 on /ssdhome type ext4 ...
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VirtualBox Debian add size to root filesystem

I have problem with my VirtualBox Debian system, which run out of memory. I can't start mysql any more and I can't work with it. mysqld: Error writing file '/usr/local/mysql/data/debian.pid' ...
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Is exFAT now the best choice for an external hard drive that will be used for Windows, Mac, and Linux? [duplicate]

I'm running a Windows, Mac, Linux tripleboot off of a single SSD, and am now, unsurprisingly, in need of additional storage space in the form of an external hard drive. I want to format my hard drive ...
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How do I get the access date for millions of files on an LSF file system without using stat?

How do I get the access date for millions of files on an LSF file system without using stat? I want to avoid using stat, because it's apparently not a good thing to query about metadata this way. None ...
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My USB has my stuff in it but it says it's empty [duplicate]

Yesterday my USB was working 100% fine before I went to college yesterday. I added some new files to it, took it to school, plugged it into my teacher's computer, and nothing shows up. It says it's ...
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NTFS MAC Times in Hexadecimal

I am using EnCase and a Hex Editor to analyse a virtual drive. EnCase says that the this hexadecimal: 5FBF60C54F2CCF01 is the date/time (mm/dd/yy): 02/17/14 09:18:54 (PM) I have worked out ...
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Why doesn't /tmp get emptied when symlinked?

I symlinked /tmp to a second hard drive (the root partition is on an SSD and I want to avoid wear). Ever since then, it doesn't get emptied on a reboot. Any idea why? I use Ubuntu 14.10.
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How to call perl file every minute from batch file

I have written a perl script which i try to call every 1 minute from a batch file. There is no error but it do not call it every 1 minute. It just pop command prompt when clicked once on .bat file. ...
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Unmount/unbind a filesystem? Can I just use `rm`?

I used this to give a chrooted ftp user access to another area of the filesystem: mount --bind /var/www/dev/ /home/ftp_user/www_dev per this website here. And, oops, I realized I gave the ftp user ...
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How to delete a particular line in a text file after some operation on that text file at the same time

I am perl bginner (but i guess logic is same for all programming languages like C++ and C in my case its perl). What i want to achieve ? I have a text file i read that file which contains different ...
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Is there a way to create a /dev/clipboard like in Cygwin?

This answer says, that Cygwin features a /dev/clipboard device, that's in sync with the default Windows clipboard. Is there any way to have that same feature in Linux for the Primary clipboard? ...
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moving a remote folder within the same volume as part of a transaction

A program that I am developing needs to update a SQL Server database and then move 1 or more network folders, each one on a different server - but each one moving within the same volume where it is ...
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When try to copy disc it show Desktop.ini and data gone

i'm trying to copy disc but whenever i click 'copy' on Nero program. The program eject my disc and appear the error that my CD is balnk, actually my CD is CD-R and there is a lot of data. Then i ...
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How do I create a ramdisk that writes changes back to persistent storage, e.g. with aufs?

Similar to this question, but more specific: I want a ramdisk / tmpfs that sits on top of a physical directory, exposing data of that directory. The ramdisk should persistently cache all data on ...
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Convention for file extension convention: uppercase or lowercase

Is there a convention for the case of the file extension in Windows, i.e. all uppercase vs. all lowercase? If there is, what is the reason, if any, for the convention, or is it just for the purposes ...
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25 views

nodejs and npm will not work on existing project directory

So, the issue here is that I installed the Node.JS on c:/app/nodejs while my projects are under c:/app/www. I tried to use a dynamic symlink of www inside /nodejs, but it did not work out. I also ...
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Organizing documents in a big hierarchy

I'm on a task of organizing documents ( like images, .docs, etc ) of all kinds of knowledge in life in such a way that i can later quickly access each category of knowledge and its documents. I ...
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fdisk shows cylinder while formating eMMC of BBB

I have repartitioned the eMMC of Beaglebone Black but when I partitioned eMMC with fdisk(busybox) It asked me the starting cylinder instead of starting block. I selected the default option and ...
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how to find out real data usage of C drive in windows 8.1

[SOLUTION: Thank you guys, finally i recover my disk space by disabling "hibernate" of windows 8.1, i do not need the hibernate cache, since my OS disk is a SSD, should be faster enough for a refresh ...
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Bind Mounting across different file systems [migrated]

Does the command mount -o bind allow mounting a folder from a different file system (vfat, ntfs) to a folder in Linux native partition?
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How do I delete files that are locked when no other app can delete them?

So I found out that I had a Trojan on my external hard drive. My anti-virus app killed it, but it has created a bunch of random files on my computer which cannot be deleted. These are image files. ...
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What is OS-level block? [on hold]

From this question on StackOverflow: …an OS can still chain multiple blocks/sector into a single logical OS-level block to reduce space. E.g. "every 3 real blocks/sectors on the drive will be ...
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36 views

Windows path substitution

Is there a command for Windows 7 and Windows Server 2012 R2 where you can perform a file system path substitution? I have a SQL server database that has the following file paths hard coded: ...
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43 views

What determines the page size and the cluster size?

Is the size of a memory page determined by the RAM itself, or by the OS? I.e., is the page size for a RAM the same for all OSes which use the RAM? Is the size of a cluster of a file system determined ...
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Are the size of a memory page and the size of a file system cluster always the same?

From http://en.wikipedia.org/wiki/Page_%28computer_memory%29 A page, memory page, or virtual page is a fixed-length contiguous block of virtual memory, described by a single entry in the page ...
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How to suspend and resume disk writes on a aufs mountpoint

I have a mountpoint with a type of aufs. I need to suspend disk writes, "take a snapshot", and then let the applications write to the mountpoint. Is there a way to achieve this ability? This issue is ...
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.ico File not deletable on Win7 x64,why?

I have a computer running WIndows 7 x64, and I recently noticed that Files with an extension .ico on USB sticks cannot be deleted. I then tried the same on another PC, and the .ico file was properly ...
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Files in $HOME losing executable bit

On my laptop running Arch, I have a bunch of git repositories cloned under ~/git. My problem is that from time to time (maybe once in a month or so), all the executable files inside the clones will ...
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Allow rwx to XFS filesystem on OpenSuSE 13.2

openSuSE 13.2 boasts new BtrFS as it's default File System. I have 3 Hard drives: /dev/sda [BtrFS] /dev/sda1 /dev/sda2 /dev/sda3 /dev/sdb [XFS] /dev/sdb1 /dev/sdc [XFS] /dev/sdc1 Where ...
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Finding files with BTRFS Uncorrectable Errors

I have a question concerning unrecoverable errors on a BTRFS file system. Specifically, I've run a BTRFS Scrub recently after experiencing a problem with one of my RAM sticks and it seems to have ...
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BTRFS filesystem, compression and copy on write

I'm planning about moving from etx4 to BTRFS filesystem on my pc and backup server. I'm very interested in the BTRFS snapshot feature (I have understood it uses the copy on write feature) and the ...
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How to lock a file in Windows?

Is there a way to lock a file with in-house means so it can't be deleted or overwritten? For testing of copy scripts I need to lock files temporarily to check the error handling in the scripts. Till ...
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If I install a Linux VM, will I be able to work with ext filesystems from my Mac?

I'm working from a Mac and need to edit a few lines on a Linux partition. (I need to enable SSH on Raspbian for a Raspberry Pi, but I need to do so effectively headless – I don't have any peripherals ...
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Copy files with extension - search subfolders

Copying ttf files from one folder to another using wildcard "**/*ttf", however this is not searching the files in sub-folders as well. How can I copy all the files (present in sub-folders as well) ...
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34 views

Remove GPT filesystem on USB

I have an old 8GB USB stick with a GPT filesystem hanging around. I'd like to move it to a more familiar fs, as NTFS or FAT32, but the usual mkfs doesn't seem to work since there is no /dev/sdb1 (as ...
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1answer
67 views

mounted filesystem without journal. Opts: (null) while mounting ext4 fs

I am using Beaglebone black with NFS, I have formatted internal eMMC with ext4 filesystem, when i mount the file system using following command message popups telling filesystem is mounted without ...
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39 views

How optimize copy and paste process for windows?

When user ot program copy a large file on the same physical disk windows do the following algorith: 1. Read a piece of data from disk. 2. Write a piece of data to disk. 3. Do points 1. and 2. until ...
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Can a file system's logical structure (including symlink targets) be represented in a single lightweight file (non-binary)?

After playing with multiple SQL and NoSQL databases over the years I feel the best way for me to ensure portability in my personal apps that are data-centric is to avoid all bonafide databases ...
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In Vim, netrw mistakenly thinks file.py is a directory

Using netrw in Vim, I navigate to a Python script I want to edit (file.py), but most of the time it is listed as "file.py/" with a slash, indicating it is a directory. This is impossible to open. If I ...
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Filesize difference - CMD & Explorer

When I'm doing a dir of a folder (in CMD) and I look at the filesize, it difference from the filesize that Windows Explorer is giving me (in the detailed view). Is this normal behaviour? Thank you.
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Windows Explorer or filesystem not accessible by apps after some uptime

I am running Windows 7 and after an unknown amount of uptime Firefox, Google Chrome and other apps are not able to access the filesystem anymore until I restart the apps. Whats happening is the ...
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Make a specific program see the file-system differently on Windows

I'm using Winamp since god knows when. I have all my songs in the media library with all my mp3 files with all kind of cool statistics like how many times I've listened to each song, ratings etc. The ...
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Giant Swap File fills hard drive to capacity

Today I had a most odd experience on our student computing server. Suddenly, you could not save a file and you got a "file system full" message. So I did a du -sh on all user directories to see what ...
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BTRFS & F2FS userspace utilites cross compilation

Is there any weblink/document which describes the steps to cross-compile btrfs & F2fs user space utilities ? Any steps ? special tuning suggestion for arm based board.(AM335x) ?