A filesystem is a way to organize and store computer files with their data.

learn more… | top users | synonyms (2)

5
votes
2answers
2k views

Does the filesystem influence flash drive speed?

I'm currently filling up an empty 16GB flash drive which gives me a lot of time for imponderables. It's formatted as fat32 or whatever it came with (and I'll probably leave it that way for ease of ...
4
votes
3answers
363 views

Why do I get 3048 MB from a 64 MB flash memory?

I have a Linux based STB (set-top-box) and it features a 64 MB flash memory and 256 MB of RAM. I wanted to take a backup of some of my settings before I flash it with another image, but I wasn't sure ...
3
votes
1answer
150 views

I want to modify root files while also being able to create non-root files in a single text editor session.

Catch 22: If I open my text editor without using sudo, I don't have permission to save any changes. If I open it with root privileges, any files I create are owned by root. I want to be able to ...
2
votes
1answer
879 views

remove unallocated space from a partition image

I have just created an image of an sd card using dd and the image is compressing down less than expected. I suspect this is because the card had not been zeroed out before I started to make the image. ...
24
votes
2answers
11k views

Can I watch the progress of a `sync` operation?

I've copied a large file to a USB disk mounted on a Linux system with async. This returns to a command prompt relatively quickly, but when I type sync, of course, it all has to go to disk, and that ...
4
votes
1answer
3k views

When we use mv command, what changes take place in HDD?

Under following conditions- mv within the same HDD partition mv to a different partition in the same HDD mv to a different device (e.g. USB HDD) Is the complete file moved or is it a very small ...
10
votes
9answers
25k views

How to clean up unnecessary files

Please suggest me any particular unnecessary file that I can clean to back everything to normal condition(temporarily). (i.e. any log or archieve or anything ). My var/log has only 40MB and Home ...
1
vote
2answers
1k views

How to extend second CentOS 5 partition in VMware

I know this question has already been answered for a primary partition, but what about a secondary? I have extended the space to 30G in VMware. When I perform an fdisk -l, here's the output: Disk ...
-3
votes
1answer
139 views

Is there a way to create a directory structure and files inside a file on a 'base' filesystem'?

Current scripts create and delete multiple files over NFS. I have been told that this is the problem, so was thinking if the run directory the script ran in looked like a single file to NFS then I ...
1
vote
1answer
262 views

Problem after deleting a system partition on another HD

While installing Debian Wheezy, I decided to use my another HD as /home/igor/Documents/, and the system installed correctlly nothing wrong happened, but later I decided to delete that partition so I ...
3
votes
1answer
500 views

corrupted library after hard shutdown

yesterday night my laptop executes a hard shutdown because my battery was out of charge. After the reboot Xorg hangs and the troubleshooting was pretty hard. A first file system check of my ext4 ...
2
votes
2answers
4k views

Moving /usr to its own filesystem/logical volume

My Fedora 17 (x64 - running on VMware Workstation 8) root filesystem is running out of space (this was an install using the default layout as suggested by the Fedora installer): # df -h Filesystem ...
4
votes
2answers
5k views

recovering ext4 partition after dd'ing over start of HD

I accidentally used dd and wrote over the first 208MB of my external disk. What I wrote over is a partition on its own (Debian nestinstaller) so what I see now is not my old (now damaged) ext4 ...
0
votes
1answer
2k views

Not able to execute system files

I was trying to install ruby with : sudo apt-get install ruby1.8 output: W: Not using locking for read only lock file /var/lib/dpkg/lock E: Unable to write to /var/cache/apt/ E: The package lists ...
2
votes
1answer
498 views

referring to files inside a jar or zip files in Linux

I am wondering if I can refer to files inside JAR or ZIP files using URLs. I mean, without using a tool (such as the Java Jar utility) but just at the operative system level. For example, if I have a ...
33
votes
2answers
36k views

how can I recursively delete empty directories in my home directory? [duplicate]

Possible Duplicate: How to remove all empty directories in a subtree? I create directories very often, scattered over my home directory, and I find it very hard to locate and delete them. ...
1
vote
2answers
611 views

Why does e2fsck fail during boot, but not later?

When booting my Debian server, I'm presented with the following error concerning my external hard drive: /dev/disk/by-label/elements: The superblock could not be read or does not describe a correct ...
1
vote
2answers
3k views

filesystem read only

My filesystem is read-only for several days. Searching for somesthing on my /var/log/messages and found this. ****EMITTING CHANGED for ...
7
votes
2answers
146 views

Removed apt-get from Ubuntu

Well my fingers did manage to do sudo apt-get remove libstdc++6 and write, yes. That removed alot of system files. Is there any way to bring it up working again? I have connected to terminal, and wget ...
1
vote
1answer
801 views

Correct owner, group and permissions when mounting an image file

Suppose I have an image home.img of a home partition of another linux machine (B). On that machine there is a users userB and there is a special group, groupB. Consider for example a file fileB in the ...
3
votes
1answer
4k views

file system uid and gid in linux

I came across a linux kernel tutorial and there they talked about 4 pairs of identifiers and one of them was file system uid and gid. Could someone explain me what it is and how it is different from ...
3
votes
1answer
344 views

How does the Linux file structure work?

I see the different folders bin, dev, mnt, proc, srv, sys, etc. What are the properties of all these different folders? What are there purposes? Are there files in some of them that I should not ...
8
votes
1answer
4k views

dd: writing '/dev/null': No space left on device

I am reading a 550MB file into /dev/null and I am getting dd: writing '/dev/null': No space left on device I was surprised. I thought /dev/null is a black hole where you can send as much as you ...
5
votes
4answers
1k views

What are inodes good for?

I wonder if storing the information about files in inodes instead of directly in the directory is worth the additional overhead. It may be well that I'm overestimating the overhead or overlooking some ...
1
vote
0answers
227 views

memtester runs faster after couple of runs

I am using this test tool : http://pyropus.ca/software/memtester/ And I noticed that first 3 iterations take 4 hours but 30 iterations take only 12 hours. I was hoping that 30 iterations will take 40 ...
14
votes
6answers
9k views

Which extension to use for text files? (Unix/Linux)

I noticed that I can read text files without an extension .txt just fine. How come? Should I save these files with or without the .txt extension? Also, what about .ini files? I usually use them like ...
7
votes
2answers
13k views

Format external hard drive to linux compatible file system

How do I format my external hard drive to a very Linux compatible file system?
1
vote
1answer
585 views

External drive chmod does nothing

Why is it that I can do chmod on my files when they are on my laptops hard drive, but when i make files on my external drive, i can't change their access rights. I do: chmod 755 somefile, and on my ...
2
votes
1answer
2k views

Why my partitions don't show the right capacity on a 4096 byte physical block hard drive?

After reading a lot about why newer 4096 byte physical block hard drives should be partitioned taking care of alignment (Linux on 4KB-sector disks: Practical advice, What is partition alignment and ...
3
votes
2answers
88 views

Technology / program selection for picture viewing software

I want to learn some Binux usage and/or programming skills and provide an easy to use browser based picture gallery on my local home network. My idea is to have a server machine, that is the Linux ...
3
votes
1answer
726 views

UBI bad block management

Anyone know what happens when UBI uses up all its reserved PEBs that are reserved for bad block management? For example say I have a UBI volume that has 14 PEBs reserved # ubinfo -d 1 ubi1 Volumes ...
1
vote
1answer
127 views

Linking “..” do somewhere other than parent directory and other strange fs beharviors

Can the entry ".." become linked to someplace other than the parent directory? Is it possible to cause "tar" to create this weird behavior? Scenario: I have a pre-built compiler to a embeded system, ...
0
votes
1answer
3k views

File system jfs/btrfs/xfs/ext4 [closed]

I was looking into some of the requirement, where huge amount of recursive files are written and deleted and looking forward if any FS (file system) as such gives advantage on others. I am trying to ...
7
votes
4answers
8k views

How to clone/copy all file/directory attributes onto different file/directory?

I want to copy the attributes (ownership, group, ACL, extended attributes, etc.) of one directory to another but not the directory contents itself. This does not work: cp -v --attributes-only A B ...
11
votes
3answers
2k views

How to check if two directories or files belong to same filesystem

What's the best way to check if two directories belong to the same filesystem? Acceptable answers: bash, python, C/C++.
32
votes
5answers
35k views

Clear unused space with zeros (ext3,ext4)

How to clear unused space with zeros ? (ext3,ext4) I'm looking for something smarter than cat /dev/zero > /mnt/X/big_zero ; sync; rm /mnt/X/big_zero Like FSArchiver is looking for "used space" ...
4
votes
3answers
1k views

Linux and Windows compatible home drive

I want to have a singular home drive for both my Win7 and Arch partitions, so I initially set the partition to NTFS, as so: 5gb / 20gb C: 475gb /home + D: which worked up until I started ...
2
votes
1answer
777 views

Permissions corrupted?

A few weeks ago, I installed Linux Mint on a USB flash drive. I used it to copy the contents of my HFS+ external hard drive to my Windows drive on my desktop. Then, I formatted the external drive to ...
3
votes
6answers
680 views

Fastest way of finding files which contain exclusively some text

I'm trying to figure out the best and fastest way of finding files whose content is specifically "something" Here's the reason: I have a process that I'm pretty sure stores its PID somewhere in a ...
3
votes
2answers
739 views

/var House Keeping [closed]

Does anyone have any general advice or links for doing some house keeping on the /var filesystem on Unix and Linux servers? I have searched the issue quite a bit but can find no real concrete ...
13
votes
2answers
13k views

Create file image container

I would like to create a 100GB file to use as a file-system. The file will be stored on an encrypted volume, so the file/file-system itself does not need to be (further) encrypted. Searching has ...
2
votes
1answer
159 views

Monitor file system [duplicate]

Possible Duplicate: Is it possible to find out what program or script created a given file? How do I monitor the file system for specific purposes? For example, I read that shutdown (when ...
4
votes
1answer
187 views

ext4 directory lists as a file

I'm working with a large (8TB) EXT4 filesystem in linux. After a power outage, the filesystem wouldn't mount. fsck is taking weeks to complete, but i ran testdisk and i'm able to see my partition ...
3
votes
2answers
1k views

Besides the journal, what are the differences between ext2 and ext3?

I just saw an answer question about filesystems for embedded hardware on another Stack Exchange site. The question was "What file system format should I use on flash memory?" and the answer suggested ...
1
vote
1answer
342 views

How to prevent fs unmounting?

(Apologies in advance for giving so few details below, but trust me that the set-up and the problem I'm dealing with are truly baroque, and even a superficial description would result in a far ...
3
votes
2answers
192 views

Uniformity of Linux files

How is it that, if you are in a folder with various files --- pictures, binary executables, scripts, even directories, zip files, just about everything --- how it is that when you hit ls -l, you get ...
3
votes
1answer
547 views

Followed SSD-optimization advice, now root partition won't mount rw

Tonight I decided I wanted to tweak the configuration of my Debian install on my netbook (Ideapad S10-2) to work better with the SSD I put in it. I have done this before and never had any issues but ...
10
votes
2answers
5k views

Find filesystem of an unmounted partition from a script

I'm writing a custom automated install using AIF (Arch Installation Framework), and I need to find the filesystem on a partition given a partition. So far I have this: grok_partitions () { local ...
5
votes
2answers
1k views

btrfs on openSUSE not releasing disk space

I have an openSUSE 12.1 install on my main desktop running with btrfs filesystem for root (/boot is ext4). I started having issues today with KDE informing me that disk space is almost all gone and ...
12
votes
2answers
11k views

largefile feature at creating file-system

Is useful to use -T largefile flag at creating a file-system for a partition with big files like video, and audio in flac format? I tested the same partition with that flag and without it, and using ...