Questions dealing with Ubuntu's layout of files, permissions, and files that reside in special locations on disk.

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60 views

External disk showing empty files

My ubuntu machine is detecting hardisk , but it shows nothing inside external hard disk . And my external disk is showing all the data in windows machine. What may be the problem. And how may I ...
0
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0answers
54 views

How to get the metadata size in ext4?

i have one SSD drive and use whole partitions for my benchmark program. what i want to know is the size of metadata after some benchmark program. it's quite hard to know the number of data blocks ...
2
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1answer
62 views

Strange message in syslog regarding ufs filesystem

I found this message in syslog: ufs: You didn't specify the type of your ufs filesystem >>>WARNING<<< Wrong ufstype may corrupt your filesystem, default is ufstype=old What ...
0
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0answers
22 views

Why is 'PowerPointViewer.exe' always appearing on my home folder?

I have deleted this before, but it appear again and again. I haven't install POL or any windows app with wine. Why is this .exe file in my home folder?
2
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0answers
210 views

Ubuntu 15.10 cannot unmount file system on shutdown

My Asus Ux303 laptop cannot shutdown, because it hangs at unmounting the filesystem. It hangs at Unmounting local filesystem... Any ideas what could cause this or how to diagnose it?
4
votes
1answer
161 views

Where should I put my touchpad configuration file?

I am currently configuring my touchpad and noticed that I can put my Synaptics configuration file (50-synaptics.conf) in two different locations : /usr/share/X11/xorg.conf.d/50-synaptics.conf And ...
3
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1answer
241 views

How to list compression ratio on compression enabled btrfs?

I enabled compression on a btrfs volume. Now how do I know the compression ratio of files or directories? Or at least the overall stats?
-1
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1answer
36 views

Where do files for the programs from the software center get saved? [duplicate]

So im looking for the README file for DOSBOX, but have no idea where it is. feedback for Ubuntu makers: it would be great if there was a "Programs" file like in Windows. Thanks
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0answers
52 views

Creating hierarchy from tree output

I sometimes come across interesting skeleton code projects that are presented as the output of the tree command. There is not always an archive or a repository that allows me to easily clone them in ...
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2answers
93 views

Corrupt external hard disk

I was just making a backup with grsync when I accidentally unplugged my external hard drive. The result is that it won't mount again. I get this error: I tried running sudo fsck /dev/sdb and the ...
0
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2answers
3k views

Help me choose the best filesystem for my PC [closed]

I'm going to do a fresh install of Ubuntu 15.10 on my notebook so i'd like to know which filesystem is the best for me. It's an Acer Aspire E5-511 with 4GB RAM , Intel HD Graphics and a Intel Celeron ...
2
votes
1answer
201 views

Unable to write to disk but disk isn't full

I can't write to any file, even as root, or do any other operation that requires writing. Neither can any process that needs to write, so they're all failing. df says I've got plenty of room: ...
1
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0answers
18 views

Filesystem and gparted disagree on free memory [duplicate]

My filesystem says I have: While gparted says: And if I run disk analyser on root partition only: it mentions I only have 6Gb in total, instead of 15 from gparted. I guess gparted is right, ...
0
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1answer
246 views

mkfs.vfat unable create file partition

I am trying to create a file system partition using mkfs.vfat uitility. Below are the command i'm using: mkfs.vfat -F 32 -n program /dev/sdb1 mkfs.vfat -F 32 -n init /dev/sdb2 I'm getting below ...
0
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0answers
55 views

Read/Write Mac Disk From Ubuntu USB

I have loaded Ubuntu on an USB key to try to recover all my files on my Mac. I have installed hfsprogs and I am trying to run: ubuntu@ubuntu:~$ sudo mount -t hfsplus -o force,rw /dev/sda2 ...
1
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0answers
112 views

Change filesystem blocksize when installing 15.10

so, I'm very much out of my depth in the whole world of *nix here. I'm searching all over about file system block sizes, and I found this script which determines what I can tell are read-speeds with ...
1
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0answers
44 views

How to tell filesystem type of digital camera

I have a Fuji X-M1 digital camera and I need to find out what filesystem type is, I have attached it via USB to my Ubuntu GNOME 15.04 machine, but upon right-clicking on it in Nautilus I do not get ...
0
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0answers
63 views

btrfs kenel error

getting some kernel error while mounting btrfs for remove the missing devices. Oct 19 07:31:57 backup kernel: [ 1883.691633] ------------[ cut here]------------ Oct 19 07:31:57 backup kernel: [ ...
11
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2answers
1k views

Where is the $HOME folder located?

I read recently that .desktop files that are used as desktop shortcuts are placed in the $HOME/Desktop directory. Where is this directory? Also, what does the $ part mean / do?
2
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3answers
800 views

Why do we have .desktop files?

I wonder why do we have .desktop files, I downloaded a trivial .jpg picture from internet (yes, I'm a newbie, currently learning command line), and saw that when I list the file, I saw .desktop ...
1
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0answers
36 views

How is it possible storage hard disk failure cause system disk to fail to read/write?

Update: One of the 3TB Seagate Storage Drives was dying and any time I had it connected to the system, I got the IO/read errors, eventually even when the system was booting. As described below, ...
0
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2answers
99 views

Cleared and Unformatted partitions in GParted

I was formatting my drive and found a partition system named cleared and unformatted. What are those partitions and why they are in GParted app ?
0
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1answer
63 views

SIM-Card Filesystem in Ubuntu Touch

On my old Nokia Phone it was possible to store Data-Files on to the SIM-Card. Does anybody how to access the SIM-Card's File system within Ubuntu Touch? May I need to mount it first? But I can't ...
0
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3answers
3k views

Why the “Filesystem root” has only XXX disk space remaining?

The title is pretty obvious and common: the error below happens very often. What I am asking is why does it happen. I mean, look at the output of GParted (the first 4 partition are required by ...
0
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1answer
29 views

Probing system file interactions

I need to monitor all interactions with Linux file system (include interactions through interrupts, kernel functions and system calls). To do this, I use SystemTap. I have two questions: According ...
0
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1answer
107 views

how to sync files in linux - command prompt?

I see the following files in my directory - -rw-rw-r-- 1 sjos sjos 401 Oct 12 15:29 Makefile -rw-rw-r-- 1 sjos sjos 401 Oct 12 15:29 Makefile~ -rw-rw-r-- 1 sjos sjos 336 Oct 12 15:12 ...
1
vote
1answer
43 views

Which directories contain system files?

When installing Ubuntu, I don't want to format the partition that is going to be /. Installation wizard prompts me that Directories containing system files (/etc, /lib, /usr, /var...) that already ...
0
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0answers
66 views

Where to install activator

I'm installing Typesafe Activator and wondering where best to put the files. According to their documentation, it requires read/write access to the directory it's located in as it creates files for ...
0
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1answer
162 views

Documents ,Music, Downloads , Desktop file not showing

Suddenly my Ubuntu 14.04 not showing any Desktop files or folders. Additionally when I click on Documents,Music,Pictures,Downloads,Videos; I see this error message: Output for running sudo gedit ...
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votes
1answer
60 views

How do I install windows back? :( Ubuntu is basically useless for me now, for some reason I can not do anything with it. [duplicate]

I can't do anything on ubuntu anymore because of an error that says "Errors were found while checking the disk drive for /" Everytime I choose to ignore it and still able to boot up, all my files are ...
2
votes
1answer
290 views

Can't write to /dev/sdc, because it is opened read-only

I have a flash memory that I can delete or write anything to it when I try to delete the partition or format it , I got this message Can't write to /dev/sdc, because it is opened read-only. How ...
0
votes
1answer
178 views

How to edit a directory file on linux

Thanks for viewing my question seemed silly enough. Since directory is a kind of file, I am wandering whether it can be edit or not.I tried several editor but failed to do it. So is there any ways to ...
0
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1answer
388 views

how to update firefox on ubuntu? [duplicate]

The firefox on my ubuntu requires me to update Flash plugin and follow the link I get to the page which ask me to download the latest Firefox package. I download the tar.gz and unzip it. It is the new ...
0
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1answer
243 views

tune2fs mount-count: is it disabled by default (set to -1).

This may be in part duplicate . However my installation is 15.04 64 bit desktop. And no one has answered on that question. It seems to be a basic query albeit very important one . I did sudo tune2fs ...
0
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1answer
77 views

Setting up storage servers with data replication and failover fallback

Environment: 2 x Web Servers 2 x Storage Servers How can I setup my web servers to have access put data into Storage Server #1, and have a failover so that if Storage Server #1 is down, it should ...
0
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1answer
15 views

How can I transfer the users from an old mysql install with having access to ONLY the physical files?

So, I had crashed my server into a non-bootable state. I reinstalled, but not before grabbing the /etc,/usr, and /var directories. I reinstalled mysql on the new install, and was able to copy the old ...
0
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1answer
99 views

unable to format usb drive, it showing read-only message

Opened disk Read-Only - You have no permission to write sudo fdisk -b 4096 /dev/sdc1 Note: sector size is 4096 (not 512) Command (m for help): p Disk /dev/sdc1: 16.0 GB, 16008577024 bytes 64 heads, ...
1
vote
1answer
104 views

How do I create a device like /dev/zero, /dev/random to echo a specific value in demand?

I wish to have a customized device to echo a specific value like /dev/zero or /dev/random. But /dev/zero always outputs 0, /dev/random outputs a random number. The specific value may be configured, ...
2
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0answers
48 views

Mounting VFAT SD card on Ubuntu 14.04 not possible w/ x-gvfs-show option? [duplicate]

[Ubuntu 14.04.3 x86_64] I have a 128MB SD card that I want to use as a read-only tripwire binary and database volume. Using UDisks I reformatted (complete wipe) that card with FAT-16 bit version as ...
15
votes
2answers
1k views

Disk slowly filling up but no visible file size changes

df Filesystem 1K-blocks Used Available Use% Mounted on /dev/vda1 30830588 22454332 6787120 77% / none 4 0 4 0% /sys/fs/cgroup udev ...
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0answers
263 views

How to troubleshoot cause of read-only file system errors

I'm running Xubuntu off of a fairly new Samsung EVO 250GB SSD. Recently my root file system has been going into read-only mode and I need help troubleshooting it. These are all the errors (and many ...
0
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1answer
82 views

Cannot mount /dev/dm-2 . And filesystem for dm-2 shows empty

My server has /dev/dm-0 , /dev/dm-1, /dev/dm-2 . The first two could be mounted successfully while the third one fails with the message mount: you must specify the filesystem type . dm-2 was ...
0
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0answers
38 views

Make mounted media use the “noatime” property

How can I configure Ubuntu (15.04) to use the "noatime" property with any media that I mount (whether it be flash-drives, SD-cards, etc.)? I understand that partitions that are mounted on start-up can ...
0
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2answers
391 views

Does rsync verify file copies on local drives?

I use rsync to do incremental backup of the local ext3 HD in my laptop onto an ext4 HD connected through USB to the laptop. I assume that rsync treats both these HDs as local, so I'm wondering if ...
1
vote
1answer
728 views

How to recover deleted files in ubuntu using live usb? [based on filetype]

I had accidentally deleted a few files from an Ubuntu Desktop. Now I need to recover only the perl files which had been sitting in /home/user directory. How can this be done? I am able to boot using ...
0
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1answer
68 views

Have I compromised my security because of unpacking an installation archive?

I'm NOT a technical person. I use only Ubuntu 14.04 lts on my computer, no other OS. Today I downloaded a package called 'Tor browser bundle' (tor-browser-linux64-5.0.2_en-US.tar.xz) from Tor-website ...
2
votes
2answers
443 views

How to rename file names to avoid conflict in Windows or Mac?

How can I batch rename file names so that they do not include characters that clash with other file systems as for instance, Screenshot 2015-09-07-25:10:10 Note that the colons are the issue in ...
0
votes
1answer
24 views

If my /proc/filesystems doesn't contain fat32 it doesn't support it?

nodev sysfs nodev rootfs nodev ramfs nodev bdev nodev proc nodev cgroup nodev cpuset nodev tmpfs nodev devtmpfs nodev debugfs nodev securityfs nodev sockfs nodev pipefs nodev ...
0
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0answers
46 views

Why does this folder keep reappearing after I rm -rf?

I'm running Docker on Ubuntu 15.04 and I'm inside a 14.04 container. I have a database called magento. There's no volumes mounted. It has a folder under /var/lib/mysql/magento. I want to rm -rf that ...
0
votes
1answer
41 views

Removing duplicate volume group with missing physical volumes

I was working with some maintenance folks to try and replace a dead hard drive on a station running RHEL5 (old, I know...). Instead of getting some brand new drives, they used some drives from an old ...