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

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Strange file cannot be deleted [on hold]

"git status" Untracked files: (use "git add <file>..." to include in what will be committed) "\020\320\350\001" "ls -l" -rw-rw-r-- 1 cf cf 0 Feb 14 07:26 ???? In Dolphin it ...
-1
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C/Unix: How to extract the bits from st_mode? [migrated]

I am a beginner to Unix programming and C and I have two questions regarding the stat struc and its field st_mode: When accessing the st_mode field as below, what type of number is returned ( octal, ...
86
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6answers
29k views

Why are hard links to directories not allowed in UNIX/Linux?

I read in text books that Unix/Linux doesn't allow hard links to directories but does allow soft links. Is it because, when we have cycles and if we create hard links, and after some time we delete ...
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1answer
10 views

Can't access to trash?

Whenever I try to enter into Trash Bin in Nautilus when a file is in it, an error message will display: Sorry, could not display all the contents of trash:///: Operation not supported. Neither sudo or ...
2
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1answer
20 views

Module vfat fails to load (I've tried the obvious fixes)

The module vfat doesn't load on boot, and attempts to force the issue with a modprobe vfat produce the error modprobe: ERROR: could not insert 'vfat': Unknown symbol in module, or unknown parameter ...
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1answer
13k views

Granting all users access to mounted CIFS shares

I'm trying to set up a debian server that will run several network-based services. These services need access to an external network drive to store their data. For security reasons, I have set up each ...
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1answer
38 views

Solaris: Spooling filesystem is full

I have a Solaris 5.8 machine that will no longer print. print job that come from the terminal say: "See if spooling file system is full" I had a look around /var/spool but it isn’t particularly ...
36
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5answers
65k views

Script to monitor folder for new files?

How do I detect new files in a folder with a bash script? I would like to process the files as soon as they are created in the folder. Is this possible to do so or do I have to schedule a script with ...
0
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2answers
241 views

Does a user have permissions to write outside /home/userDir?

Does a normal* user have permissions to write anywhere else than his own home dir? (no sudo and those privilege escalation tools) I say normal because I do not know more categories than root and ...
1
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1answer
29 views

Linux file system corruption due to improper shutdown (fs ext4)?

I have been managing many Linux servers, It is very easy to play with Linux servers than any other OS. But Sometime I encounter a problem with Linux OS is that, The file system corruption. This ...
0
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1answer
12 views

Why is curl failing write to body?

I am trying to install pathogen.vim plugin with following command: mkdir -p ~/.vim/autoload ~/.vim/bundle && \ curl -LSso ~/.vim/autoload/pathogen.vim https://tpo.pe/pathogen.vim But it is ...
26
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4answers
73k views

Recovering ext4 superblocks

Recently, my external hard drive enclosure failed (the hard drive itself powers up in another enclosure). However, as a result, it appears its EXT4 file system is corrupt. The drive has a single ...
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0answers
62 views

Cannot remove file: Read-only file system

I am trying to delete a file on an Ubuntu 12.04 system for which I have root access. However, I am getting this error: root@CRST-Web:/home/real_property/html# rm -r -f results.php rm: cannot remove ...
5
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3answers
506 views

On a Linux system, see how busy is file system

I want to know of a command that will show me how (currently) busy is the file system. I'm assuming there exists such a command that will show me this. With such command, are there specific arguments ...
10
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6answers
651 views

File systems vs partitions vs directories

I am new to Linux so pardon me for the possible confusion you may encounter in this question. From what I understand, filesystem specifies how a partition stores/manages file, with standards such as ...
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0answers
21 views

How to set usb stick's ntfs filesystem's attribute to readonly in linux

I know how to set readonly attribute to ntfs filesystem of a usb device by using diskpart tool in windows. attributes disk set readonly but how to set readonly attribute to the same usb device ...
0
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1answer
39 views

How do I load a kernel module later in the boot sequence?

I've been experimenting with the g_mass_storage kernel module. I first tried loading it by putting it in /etc/modules and the options in /etc/modprobe.d/file.conf This worked, but when I connected ...
2
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1answer
2k views

/etc/fstab is mounting rw filesystem as read-only

A partition of my internal hard drive (not the root partition) I want to mount automatically on boot. I've been using /etc/fstab to mount my external backup drive automatically read-only, so this is ...
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2answers
2k views

Ext2 filesystem for /boot partition

Is the ext2 filesystem good for /boot partition? I set ext4 for / root partition, but wasn't sure which filesystem to select for the /boot partition, and I just set ext2. Does it matter in this case?
199
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5answers
36k views

/usr/bin vs /usr/local/bin on Linux

Why are there so many places to put a binary in Linux? There are atleast these five: /bin/ /sbin/ /usr/bin/ /usr/local/bin/ /usr/local/sbin/ And on my office box, I do not have write permissions ...
1
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1answer
27 views

Use “tune2fs” on XFS filesystem, get “Couldn't find valid filesystem superblock.”

I ran into this message two days ago=: tune2fs: Bad magic number in super-block while trying to open /dev/vdc1 Couldn't find valid filesystem superblock. The system is Ubuntu, a KVM virtual machine ...
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3answers
24 views

“write-once archive”: ext2 vs ext4^has_journal vs

summary Suppose one is setting up an external drive to be a "write-once archive": one intends to reformat it, copy some files that will (hopefully) never be updated, then set it aside until I need to ...
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2answers
806 views

Check the filesystem format with BusyBox (stat -f and df -T do not work)

I am using latest BusyBox v1.22.1 in my target. I want to check the filesystem type using stat -f or df -T but busybox doesn't support such commands. busybox help shows stat command as supported but ...
2
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1answer
25 views

Why the ext4 filesystem can be shrunk only when not mounted?

I'm playing a little bit with LVM. I've noticed that I can add a new HDD, include it in the volume group, and add some space to all of the existing volumes without unmounting theirs filesystem or ...
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1answer
42 views

Why deleting big files from tmpfs is not instantaneous?

$ cat /proc/mounts | egrep ' /tmp ' tmpfs /tmp tmpfs rw,nosuid,nodev,relatime 0 0 $ dd if=/dev/zero bs=1M count=3000 of=/tmp/q 3000+0 records in 3000+0 records out 3145728000 bytes (3.1 GB) copied, ...
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1answer
27 views

Symlink to same directory

I've set up a ftp server for using ftp push on a tv recording page. I've created an extra user for this, who has only access to one directory, which the user is chroot-ed in. But the page does not ...
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2answers
4k 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?
0
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1answer
21 views

How to safely delete a regular directory that contains several btrfs snapshots inside it?

I have a regular directory than contains directly underneath it several btrfs snapshots. Is it safe to do an rm -rf on the parent directory, or do I need to first do a btrfs subvolume delete SUBVOL on ...
3
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0answers
29 views

How can I have a filesystem mounted during user login?

I would like a file based filesystem (~/Archives/inventory.locker) mounted upon user login and unmounted upon logout (~/Documents/Inventory). pam_mount seems to provide the functionality I am after, ...
2
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1answer
17 views

Mount a large squashfs in a way that allows random writes (to a separate filesystem)?

I just received a few-dozen-gigabyte squashfs that contains a PostgreSQL database. In order to be able to conveniently query it, I need to have a write access, which makes it complicated. Is there a ...
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2answers
2k views

File system CRC check

I know that before running the kernel, u-boot (the boot loader) will check the kernel image CRC. Only if it is correct it will go further, else it will give a "Bad CRC" error. I want to do same thing ...
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How much control do concrete file systems have over the VFS inode cache and the buffer cache?

I want to make sure I'm understanding how VFS inodes and file system inodes working together. A file system's inodes are stored on the block device and that is where they live. When an operation is ...
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1answer
23 views

Having trouble accessing my phone via USB

(I've searched the web for people that have had my exact problem, and couldn't find any, so if this is a repeat question I won't be offended by having this pulled, but I would appreciate being ...
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1answer
23 views

Remove filesystem from an unpartitioned disk

I have an un-partitioned 500GB disk with a ext3 fs using the entire disk. If I make sure there are no partitions on the disk using fdisk or parted, "ssm list" will still show an ext3 fs on the disk ...
54
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4answers
49k views

Reserved space for root on a filesystem - why?

I understand that by default, newly created filesystems will be created with 5% of the space allocated for root. I also know you can change the defined space with: tune2fs -m 1 /dev/sdXY What I'm ...
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1answer
22 views

Remounting is not supported at present. You have to umount volume and then mount it once again

I was not able to chmod a file in my /dev/sda3 on my Ubuntu12.04 system. This is what I get when I try to see its information: $ mount | grep 'media' /dev/sda2 on /media/sda2 type fuseblk ...
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1answer
2k views

kernel: “echo 0 > /proc/sys/kernel/hung_task_timeout_secs”

I got this errors in syslog. Any idea what does it mean? The system is running on Ubuntu 12.04, kernel: 3.8.0-35-generic #52~precise1 It looks to me like failure when trying to write to disk... ...
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KDE 5 plasma desktop slow filesystem operations

I have KDE 5 and Plasma Desktop, Kubuntu 15.10, and there is one annoying thing: file operations works very strange. If I'm removing some file first time until system was power on, KDE starting to ...
0
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1answer
33 views

Why isn't ext listed for file system types supported by my kernel?

I follow the reply here to list the types of file systems that my kernel can support. Why doesn't ls /lib/modules/$(uname -r)/kernel/fs list ext? My Ubuntu uses ext4 file systems.
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`stat -f` show a ext4 file system type as ext2/ext3

On Ubuntu 14.04, I am checking the ext4 filesystem for my home based on a file new in it: $ stat -f new File: "new" ID: 38d4cd29e44142c6 Namelen: 255 Type: ext2/ext3 Block size: 4096 ...
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2answers
28 views

Squashfs minimal compression?

I'd like to create a squashfs image of a directory, but it's a huge one and even minimal compression would be a big win. Is there a way to do something like mksquashfs -1?
0
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1answer
8 views

How do I reset the folder metadata size without recreating the folder?

I have a folder (watch) that got filled with a lot of temporary files by mistake. I've cleared out all of those files but the the folder is still 356 kB in size. In the past I've moved the folder out ...
1
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1answer
43 views

Do both “stat -f” and “cat /etc/fstab” show file system ids?

On Ubuntu 14.04, I am checking the filesystem for my home based on a file new in it: $ stat -f new File: "new" ID: 38d4cd29e44142c6 Namelen: 255 Type: ext2/ext3 Block size: 4096 ...
78
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12answers
7k views

Why is Linux's filesystem designed as a single directory tree?

Can anyone explain why Linux is designed as a single directory tree? Whereas in Windows we can have multiple drives like C:\, and D:\, there is a single root in Unix. Any specific reason there?
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Snapper - how to undo changes, preserving timestamps?

I've damaged modification dates of files on my drive and I wanted to revert them using snapper snapshots but it doesn't seem to work, snapper only reverts content of files not modification dates. ...
2
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2answers
1k views

Debian won't boot: udevd fails to load device sda and sdb

I can't boot my Debian system, I got this error during boot up: Driver 'pcspkr' is already registered, aborting. I have solved this by adding blacklist snd-pscp to /etc/modprobe.d/blacklist.conf ...
2
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2answers
2k views

specify mount option in /etc/fstab (mode=1777)

I have following line in my /etc/fstab: /dev/mapper/tmp /tmp ext4 noexec,nodev,nosuid,mode=1777 0 0 When I try to mount /tmp, I get following error in dmesg: EXT4-fs (dm-1): ...
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1answer
27 views

How to determine file system type reliably under Linux?

I want to be able to run a command which would print what exactly FAT version/subtype is a partition formatted in (FAT12/FAT16/FAT32/VFAT/exFAT) Some guys suggests following command # stat -f -c %T ...
0
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0answers
32 views

mount directory cannot be seen from within apps

I have successfully mounted a local network location on my Android device to /sdcard/routersd with permission set drwxrwxrwx; I can successfully browse within this mounted directory and do copy/delete ...
4
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1answer
5k views

Mounting a multi-partition (GPT/HFS+) USB 2.0 harddrive on Debian

I have a 3TB USB 2.0 hard-drive which has two HFS+ (Mac) partitions using GUID partition table for the partition records. It was partitioned with Mac OS Disk Utility. How can I mount these partitions ...