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

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3
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1answer
98 views

Emulating a file

I have certain application that opens a file with given path (presumably with fopen or derivative), reads the file, possibly writes to it and closes it. I have no control over this application other ...
16
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4answers
68k views

Best way to mount remote folder

I have two RasberryPi running debian wheezy and I would like to mount a folder from computer A on computer B. What is the best (as in most efficient) way to do this? I can do it via SMB, but that is ...
4
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5answers
134 views

Tool to compare files on one disk with registry information on another?

Been a long time since I got very far under the hood in Unix so I'm probably not even using proper terminology when I say 'registry,' but here's the situation. I have a disk thats dying. Lots of i/o ...
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3answers
2k views

Securely delete files on btrfs filesystem

Sometimes, there's the need to delete a file in a filesystem, and make sure that the file is truly gone. A file that contains sensitive passwords, for example, should be throughly wiped from the disk. ...
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2answers
9k views

How do I remove a file with no permissions?

A hacker has dropped a file in my tmp dir that is causing issues. Nothing malicious except creating GB's of error_log entries because their script is failing. However, the file they are using to ...
6
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2answers
1k views

FHS differences between OS X, Linux and FreeBSD

I've read that there is a different behavior between FreeBSD and Linux with the /usr/local, in FBSD ports are installed there, in Linux not, can someone explain more on this? I'd like to know where ...
0
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2answers
484 views

Problem mounting my iRiver story HD on Ubuntu

I would like to connect my iRiver Story HD to my ubuntu 12.04 machine but as I connect it I get this error: Unable to mount Story HD Error mounting: mount: wrong fs type, bad option, bad ...
32
votes
3answers
7k views

Why are text files 4kB?

For some reason, when I make a text file on OS X, it's always at least 4kB, unless it's blank. Why is this? Could there be 4,000 bytes of metadata about 1 byte of plain text?
1
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1answer
321 views

What parts of the filesystem to tmpfs/squashfs/sparseimage for USB live system

I want to create a live system on a USB key / SDCard with Linux Mint 14 (KDE or Debian Edition) that stores data persistently. The USB key needs to have at least one fat32 partition. As storage for ...
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0answers
46 views

Move files replacing? [duplicate]

Possible Duplicate: ‘mv’ equivalent of drag and drop with replace? I'd like to take a folder /a/b/c, and copy all files in /a/b/x into /a/b/c, replacing all files in /a/b/c with the ones in /a/...
1
vote
1answer
248 views

Cannot execute files on another partition

On my system I have three partitions: one is shared between W7 and Linux Mint (NTFS), and the other two are OS-specific. In my home directory I have created a symbolic link to another directory on ...
3
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2answers
2k views

Location of inodes (ext)?

Say I want to observe how the flow from file name to cluster on hard disc goes. I get the inode number of I file (which is mapped in a directory data): 1863 autorun.inf So, now i know that i have ...
4
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1answer
983 views

What do GDIR, GREG, VDIR, VREG mean in lsof output

The lsof manpage says the following about the TYPE column. TYPE is the type of the node associated with the file - e.g., GDIR, GREG, VDIR, VREG, etc. Can someone please explain (or point ...
7
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4answers
3k views

What are the advantages of the Unix file system structure

If I install an application in Linux for example Debian/Gnu Linux, the files of the applications are copied to many different directories in the file system. Some scripts goes into /usr/share .. /usr/...
0
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1answer
622 views

The relationship between execute permission on a directory and its inode structure

My question deals with the relationship between the read and execute bits on a directory. I'm going to give my assumptions, first, all according to my current knowledge, then ask my question in bold ...
6
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3answers
2k views

Read a directory to see the file to inode mapping

I'm just learning about filesystems and it is said that a directory is just an ordinary file which keeps a list of file-inode pairs. If I try to open the directory Downloads with any of the following ...
1
vote
1answer
720 views

Filesystem with 1Mb block?

I'd like to make a partition for keeping ISO images of nightly builds. Most of files will be bigger than 1Mb. Unfortunately ext2/ext3/ext4 supports only 4Kb blocks. # mkfs.ext4 -b 1048576 -L DISTR -m ...
13
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2answers
33k views

Create and format exFAT partition from Linux

Is it possible to create and format an exFAT partition from Linux?
2
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2answers
95 views

Download copy of file which updates on change

Sorry about the title, I didn't know how to write it - It's kind of confusing. Ok, I am using my Raspberry Pi (Debian) and I store code on this server in which people have access to. My problem at ...
3
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1answer
1k views

How can I set a directory maximum size?

Is there an easy way to cap the size of a directory? I don't think there is but just wanted to make sure. I would like to set max directory sizes for some user home dirs as well as some other dirs, ...
1
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1answer
162 views

How do I give global access to a file in a private folder?

For example, I want all the files in /home/trusktr/Downloads/ to remain hidden from other users, except for one. I tried chmod 777 /home/trusktr/Downloads/someFile.avi but someFile.avi is still ...
0
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4answers
4k views

Optimal Setup for Windows & Linux - Sharing and Partitioning

This question gets a little complicated so please bear with me. So we have a new custom designed desktop which we will be mostly a dedicated machine for scientific computations in FORTRAN and MATLAB....
1
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1answer
255 views

Will kjournald takes too much space?

I am changing my hard disk to ext3 because journalling got so much write my server crash. Well, now I use SSD. Journalling is no longer the issue. But SSD are small. Will journaling takes so much ...
1
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1answer
2k views

Identify text/ascii files in Linux/Solaris

I have a little project to build bash script that search in the OS ( Linux/Solaris ) the current IP address from files and replace them with other IP address. The problem is that IP address could be ...
1
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0answers
190 views

Directly convert Archbang live on a USB drive to one such with persistent file-system

I have installed Archbang 2012.12.03 from ISO image on my USB drive, now I have a USB drive with a live Linux installed on it but at end of every session and rebooting system I faced with a fresh ...
9
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1answer
7k views

EXT4 FS needs journal recovery. What does this mean?

$ sudo file -s /dev/sdb1 /dev/sdb1: Linux rev 1.0 ext4 filesystem data (needs journal recovery) (extents) (large files) (huge files) What does "needs journal recovery" mean? Do I need to do ...
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0answers
150 views

Creating a Virtual filesystem to boot linux

I am trying to boot the linux kernel (bzImage) in QEMU but have had issues. After asking on U&L I found out that my problem was that I was booting the kernel without a filesystem to boot from. So ...
2
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1answer
1k views

How to find the type of an img file so it can be mounted

I have a .img file and I want to see what's inside of it. I tried mounting it, but I don't know what filesystem type it is. Is there a way to detect what it is so I can mount it? I'm using Ubuntu. ...
4
votes
1answer
598 views

Virtual file made out of smaller ones (for mac-like sparse bundle solution)

I'd like to recreate a feature of Mac OS X called sparse bundles (disk images made out of smaller files, making them easy to backup after a small change). For that I'm looking for a way to '...
4
votes
3answers
2k views

How do I point certain directory to /dev/null?

I am running CentOS with cPanel, which creates a custom log directory and writes the logs there. The result is that the IO for the hard disk goes sky high. If I do lsof I got: hostsite.com httpd ...
4
votes
1answer
158 views

How can I get a total for space used by a group of subdirectories

My file system is set up like: /ftp/data/ProductGroup*/ProductType*/Year*/Day*/ActualProductFile* ("*"denotes directory names that change) I'd like to find out how much space is being used for ...
29
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3answers
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File system compatible with all OSes?

I use Linux and Mac OS X on a regular basis, and sometimes I have to use Windows. I need to use a flash drive on all three, and I need a filesystem that will work well on all of them. None of the ext'...
2
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1answer
83 views

Listing script's file dependencies

Given a shell script, is there an easy way to extract what files it manipulates explicitly (so not like concatenating some command and than eval-ing it)? E.g. #!/bin/bash . /etc/someconfig.cfg ...
8
votes
1answer
241 views

How to re-size partitions in a complete hard drive image?

I have taken a complete image of a hard drive using: dd if=/dev/sda of=/home/user/harddriveimg bs=4M It would seem to me, that I should be able to re-size the partitions within it after suitably ...
3
votes
3answers
2k views

How is GRUB able to read it's config file on ext3 fileystem?

I have read that GRUB can read ext2 filesystems and has modules for doing this. What is the location of the mod on a Redhat system and how about if the /boot partition is ext3/ext4 or other filesystem ...
3
votes
2answers
2k views

Filesystem monitoring

A script where we need to come up with a way for the disk space monitoring to be smarter. On smaller file systems, we still want to alert at 90% full, but on larger file sytems, we should only alert ...
5
votes
2answers
1k views

Why is cd not a file in /bin? [duplicate]

Possible Duplicate: Why is cd not a program? I noticed that every other commonly used util, like ls, cp, rm, etc. are actually files in /bin -- but cd is not. Nor is it in any other binaries ...
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0answers
28 views

How can I access (including read and write) a linux file system from a windows machine on the same network [duplicate]

Possible Duplicate: How to share files between Linux and Windows? I have a Linux virtual machine (Hyper-V) acting as a web server on my network. I would prefer to browse it's file system from ...
2
votes
4answers
182 views

Is there a structured format of version info for OS-level executables?

I am looking for a structured format of version info for OS-level executables, such as in /usr/bin and /usr/local/bin. The problem we are having is the inconsistent architecture between our PROD and ...
2
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0answers
242 views

Can a FAT32 and NTFS file system exist without UUID?

I have an USB disk drive partioned with 2 FAT32 partitions, which is not getting detected in the embedded device, but gets detected in a Fedora system. Basically in the udev rules, I am not able to ...
2
votes
1answer
234 views

What does the CONFIG_NLS_UTF8 kernel option do?

The kernel configuration contains an NLS_UTF8 option. It can be found under File systems → Native language support. What does it do? Its description maintains that it is needed for using a FAT or ...
8
votes
1answer
5k views

On the Fly Compression for a Directory

I have a directory that is always going to be storing text files that are rarely (think weekly) used. Naturally this is a great place to use compression. However, rather than having to use tar ever ...
2
votes
2answers
91 views

'tie' [nonexisting] files to programs

Recently, I just had an idea which turned out to be pretty useful under certain circumstances. But first some simple explanation: In Perl, you have the option to tie variables to some functions ...
5
votes
2answers
5k views

Must the filesystem be unmounted while extending an LVM logical volume?

I have seen some tutorials on extending an LVM2 logical volume. None of them instruct you to unmount the filesystem. They claim that you can extend an LVM volume while it is in use. Is this right?
1
vote
2answers
264 views

zfs one pool error

I have zpool with name zroot and zroot has 4 pool when electricity down system reboots and than i saw some error with 1 pool: Solaris: Warning: can`t open object for zroot/var/crash log_sysevent: ...
4
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1answer
2k views

Removing files that do not exist

I apologize for the possibly misleading title, but it is the best way I could think of to describe the problem, which is: I have several files that I can cat, but when I try to rm them I get a "No ...
5
votes
1answer
471 views

Can I read and write to alternate HFS+ file forks or NTFS data streams from Linux?

It's possible to mount both Apple HFS+ and Microsoft NTFS filesystems under Linux. Both filesystems support multiple content streams per file, though this is not widely used. Apple uses the term ...
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1answer
1k views

Trigger action each time a file is modified [duplicate]

Possible Duplicate: Can a bash script be hooked to a file? Is it possible to mount a mechanism to a file to perform an action (e.g. mark the change in some log file and such) each time the ...
0
votes
1answer
479 views

File permission mechanism in Unix like systems

Can some one please explain with a an example the file permission mechanism in Linux and other Unix like systems ? What are the nine bits for ? Why do we have a group id for a user as well as for a ...
2
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1answer
2k views

convert /dev/md0 to /dev/sda1

I used a Software-RAID I and want to access the data without RAID now. After mdadm --fail /dev/md0 /dev/sda1 mdadm --remove /dev/md0 /dev/sda1 I tried mount -t ext4 /dev/sda1 /mnt but dmesg ...