A filesystem is a method of storing and organizing computer files and their data.
0
votes
1answer
25 views
Too many levels of symbolic links
I created this file structure:
test/src
test/firefox
when I run this command:
ln -s test/src test/firefox
I would expect a symbolic link test/firefox/src to be created pointing to test/src, ...
1
vote
1answer
12 views
Do files with equal name conflict in unionfs (aufs)?
I just tried to mount two folders in one using aufs on Debian 7 wheezy. The command I issued is the following:
mkdir /test1
mkdir /test2
mkdir /test
mount -t aufs -o dirs=/test1:/test2 none /test
...
-3
votes
0answers
22 views
btrfs or ext4 for SSD? [on hold]
I am building a new mini itx computer (my first from scratch build) and am asking for suggestions for which distro and file system to use for an SSD.
Specs: APU: A10 7850K
SSD: Crucial MX100 512GB
...
-4
votes
0answers
20 views
how to change TCPServer.class file to C or C++ file in fedora [on hold]
I have been to told change the tcpserver.class file to c file.
-2
votes
0answers
21 views
file system and block size [duplicate]
I'm just learning about i-node and get confused on difference between file system block size and disk block size.
Please explain what the difference between them or give me some useful link resource ...
-2
votes
2answers
18 views
Check multiple files with string
i.e. for each .csv file, do the following:
Check if the file contains the string “HEADER” in the first line. If its missing, do the following:
Display, “ERROR: Missing HEADER record for ”
Rename ...
3
votes
3answers
64 views
Mount filesystems after boot to avoid fsck delay for sshd
I'm trying to optimise the overall downtime and improve availability in case of system failure.
I'm specifically concerned about the reboot (e.g. after a kernel panic) taking so long that I don't ...
3
votes
0answers
44 views
What makes fsck so slow on big filesystems?
I have over a dozen of filesystems on my OpenBSD server with 12GB DDR3 and several 1.5TB HDDs. All filesystems themselves are generally between 8GB and 64GB in size.
I've noticed that even by ...
4
votes
1answer
21 views
batch rename files
I have multiple photo files with inconsistent name format.
beach north.JPG
beach south sm.jpg
Bryce windsurfing sm.jpg
DSC01031 1024x.jpg
DSC02652 ed sm.jpg
DSC03229 sm.jpg
Kayak kids 2.jpg
Maui ...
4
votes
1answer
189 views
Filesystems and Partitions
I have been reading up more on UNIX and have brushed up on different filesystems and partitioning HDs. In the book it mentioned that filesystems are very much different than partitions and one ...
0
votes
0answers
11 views
Mount (or makefs or tunefs or cap or…) option to disallow symlinks?
(Other than mkfs.vfat, that is.)
Is there a way in Linux to have a filesystem mounted but to prevent symlinks from being made on it? It's fine if this needs to happen at the time the filesystem is ...
-1
votes
2answers
18 views
Does tar create new inodes to be archived?
When tar is asked to archive a directory, does it create a new inode for each file system object? If yes, how does it query and save the meta-data? Won't the format of storing this inode metadata vary ...
0
votes
1answer
13 views
Difference between a distributed and a cluster file system
I have been reading some articles and I didn't find the answer for which I am looking for. What I understand is the following:
Both systems span over a network. A distributed file system features ...
1
vote
1answer
29 views
How to discard/TRIM a range in an open file ?
For an SSD, I can open the row device and discard a range of pages using ioctl() with BLKDISCARD command.
My question is
for an open file, how to discard a range of data? and Is that depends on the ...
1
vote
1answer
52 views
Give read-only access to specific folders?
I would like to give read-only access to a user but I want him/her to see only the exact folders I give access. for example he/she shouldn't travel around all the server and browse to all users ...
1
vote
1answer
40 views
Directories are missing in recovery mode
My service provider booted my virtual server in the recovery mode and now I'm a little bit lost.
I'd like to save some files from my web-directory but I can't find /var/www. Though there are files in ...
2
votes
1answer
46 views
Can't resize a partition using resize2fs
I recently resized the hard drive of a VM from 150 GB to 500 GB in VMWare ESXi. After doing this, I used Gparted to effectively resize the partition of this image. Now all I have to do is to resize ...
4
votes
2answers
215 views
Why there are multiple folders for executable files in Linux? [duplicate]
I'm trying to understand Linux file system, and one of the question is:
1- Why there are multiple folders for executable files: /usr/bin, /usr/sbin/ and /usr/local/bin? Is there any differences ...
8
votes
3answers
339 views
Why does fstab use UUID instead of the actual file system name?
For example, this is the first line of my /etc/fstab:
UUID=050e1e34-39e6-4072-a03e-ae0bf90ba13a / ext4 errors=remount-ro 0 1
And here's the output of df -h command (reporting free ...
1
vote
1answer
34 views
debug mkfs.ext3 command output
I was creating a new file system in my external HDD. While formatting, I had to format this partition to the remaining available partition which is somewhere around 850GB. Now, I created an ext3 file ...
1
vote
0answers
29 views
“including” files in fstab [duplicate]
It would bice on some systems to break up one big fstab file and replace it with an fstab file "including" other files.
Also it would be nice to mount things from a secondary "fstab" file relative to ...
5
votes
1answer
82 views
What's the easiest way to resize an ext4 partition from the command line?
What's the easiest way to resize an ext4 partition (or any type partition depending on the method) from the command line (potentially with the fewest commands, but also the easiest to understand)?
...
3
votes
1answer
32 views
Get device with major number 0 (btrfs subvolume)
When I stat a file on a btrfs subvolume I get a major device number of 0.
Is there a reliable way to find the mount point of this device, without knowing in advance it is a btrfs subvolume?
e.g. I'd ...
0
votes
2answers
40 views
Mount compressed tar file and update it
How do I mount a .tar.gz file, update it (add new files, edit files), and then unmount it such that changes are reflected in the original compressed file?
I'm open to other compression formats if no ...
3
votes
2answers
55 views
Mounting Disk Image in Raw format [duplicate]
While Trying to mount a disk image in Raw(dd) format using the following command
mount nps-2010-emails.dd /media/manu/
I get the following error message
mount: you must specify the filesystem ...
1
vote
0answers
18 views
Conversion of disk image from Encase (E01) to Raw format [closed]
I am trying to convert from EnCase to Raw format using instructions given on this page.
The following takes place:
manu@ubuntu:~/Downloads$ ewfexport nps-2010-emails.E01
The program 'ewfexport' is ...
1
vote
1answer
38 views
Only write permission for a directory doesn't allow to rename (move) files inside?
In fact, I would like to ask more general question -- "what does write permission for a directory allow you to do exactly?" -- but let's approach it with a concrete example.
It is a long question, if ...
2
votes
1answer
55 views
What is type 'none' for mount points and why are mount points of the same type below /run?
In Ubuntu 14.04 when executing command mount I get following excerpt
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)
...
11
votes
1answer
417 views
How is file owner and group remembered for an external drive?
I formatted an external hard drive with an ext4 partition and subsequently mounted it. So that I could use the new partition, I did: sudo chown me:me /mount/directory to change the file owner and ...
1
vote
2answers
50 views
Secure wipe (scrub) filesystem of VPS from VPS itself
I have a VPS I'm planning to delete. This particular cloud provider makes no guarantee that the data on the drive will be wiped before giving the disk to the next person. What's a best effort attempt ...
0
votes
1answer
51 views
What are the advantages / disadvantages Linux file hierarchy has in compare to other OSs? [duplicate]
does it make any difference whether a file system hierarchy chooses to sort files by types and put them all under one directory (like all the binaries are under bin) or on the other hand sort them by ...
1
vote
1answer
39 views
Filesystem types for encrypted partitions
I wish to encrypt two external hard drives using dm-crypt/LUKS for whole-disk encryption. I want one hard drive to have an ext4 filesystem for Linux use only, and the other to have an NTFS filesystem, ...
0
votes
1answer
24 views
setfacl remove all write access
I want to remove all write access to files & directories for any user or group while preserving other permissions. Is this possible?
1
vote
3answers
44 views
How to know if /dev/hda2 is Primary partition or Extended partition
If all four primary partitions exist on an IDE drive, they are numbered
as follows:
/dev/hda1
/dev/hda2
/dev/hda3
/dev/hda4
We have also the partitions on a disk with one primary partition and ...
1
vote
0answers
44 views
Is there a way to access Google Drive spreadsheet?
I'm using Linux Mint 16 Cinnamon. I tried google-drive-ocamlfuse and grive, but both of them can't access spreadsheet. google-drive-ocamlfuse shows this error:
Device or resource busy
W hen it ...
2
votes
1answer
42 views
How are files opened in unix?
What's the internal process of opening a file?
To open a file, the system converts the pathname to inode and from the inode search the corresponding driver disk portion to look for the content of the ...
3
votes
3answers
116 views
Is maximum individual file size in ext3 imposed on mysql tables?
I am reading about the file systems in Linux from here. This particular sentence kind of confuses me.
For ext3,
Maximum individual file size can be from 16 GB to 2 TB.
Overall ext3 file ...
2
votes
2answers
36 views
Save files to mounted partition (fstab), but also main partition
I've mounted a USB in /etc/fstab:
UUID=xxxx-xxxx /mnt/someFolder auto users,uid=...
I want to save important files to this partition, but I want to have a backup on my normal filesystem in case the ...
2
votes
3answers
64 views
Linux - preventing an application from failing due to lack of disk space
Due to an unpredicted scenario I am currently in need of finding a solution to the fact that an application (which I do not wish to kill) is slowly hogging the entire disk space. To give more context
...
1
vote
1answer
48 views
Why isn't sda1 showing up in dev and how can I fix that?
I have an embedded Linux device and I was trying to copy some files to it. I plugged in a USB stick, the dmesg shows that it was recognized, but for some reason /dev/sda1 never showed up.
I'm trying ...
0
votes
3answers
47 views
How to interact with the concrete file system?
Can a userspace program interact with the concrete file system(not VFS).
What i have got is, that VFS allow linux to treat all file systems alike and gives a abstracted api to user space.
I want to ...
0
votes
1answer
24 views
btrfs snapshots without subvolumes?
I'm starting to use btrfs. I want to be able to snapshot certain directories but do not want to create sub-volumes. Is this possible?
0
votes
3answers
67 views
“Other” permissions on files
To my understanding, the last three character of file permission printed by ls command is about other user's file permission.
If the other user"s" have separate file permissions to this file, what ...
1
vote
2answers
58 views
live dd over a mounted read-only root partiton
I'm trying to conceive a firmware update mechanism for a Linux-based embedded system without an additional initrd/initramfs/whatever. From within the running system which has a read-only mounted root ...
1
vote
1answer
45 views
How to install a .bin file that gives the error that it needs more space in /tmp?
Here is the error:
~]$ ./jdev_suite_121200_linux64.bin
0%....................................................................................................100%
Not enough disk space in dir ...
0
votes
1answer
42 views
Access Windows File System From Linux OS
My sister's computer has stopped working. I am not entirely sure what the problem is, but I think it is a Windows/software issue. She really just wants to retrieve the pictures off it. I am ...
1
vote
1answer
26 views
How can I determine the cause of CF card corruption?
I installed qnx in my CF card and made it bootable and it was working well. However, yesterday it stopped working while my system was running. Checking the filesystem revealed that it was corrupted. ...
2
votes
3answers
69 views
What is the difference between path and directory?
I don't understand the difference between path and directory. Could someone explain to me with examples?
1
vote
1answer
16 views
backup inode table on ext2/3/4
is it possible, to backup on regular basis inode table (including all inode information) on ext2/3/4? If yes, how to do it, or which program to use?
13
votes
4answers
66 views
Corruption-proof SD card filesystem for embedded Linux?
Recently we had a rather unpleasant situation with our customer - Raspberry Pi based "kiosk" used to display remote sensing data (nothing more fancy than a kiosk mode browser displaying a ...
