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

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100 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
61 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
797 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
34 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
77 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
57 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
91 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
38 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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52 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
146 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 ...
-1
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
269 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
157 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
votes
1answer
355 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
votes
1answer
200 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
72 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
votes
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
88 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
92 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
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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 ...
1
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0answers
248 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
71 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
36 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
votes
2answers
360 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
578 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
votes
1answer
67 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
398 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
45 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
39 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 ...
0
votes
2answers
46 views

list files or dirs starting with 'jre'

I need to list files and dirs with names starting with jre (small and capital letters are allowed). When I execute: ls | grep jre ...it greps just low capital letters and gives output with jre not ...
3
votes
3answers
232 views

How to sync two folders on my machine, in one directional syncing?

I have a set-up in which I create a certain file, and subsequently move it into a storage area for that type of file (folder A). There is another folder on my machine where I must also copy the file ...
0
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0answers
74 views

Install LAMPP / XAMPP not as root

I've installed LAMPP and that worked fine. It was installed in /opt/lampp/. But now I need to install it again (I uninstalled it) NOT as root, in which case I don't have to sudo everything. ...
0
votes
1answer
13 views

Where is the changelog downloaded to?

After running (where <package> is replaced with the name of the package whose changelog you want): apt-get changelog <package> Where is the changelog downloaded to? And what happens ...
3
votes
2answers
173 views

Where are file properties stored on the actual file system?

I am creating a program that takes a hexdump of a file, so that I can then transmit that somewhere, and have the file reconstructed, however the hexdump is only of the file contents, I also need to ...
0
votes
0answers
55 views

How do I get Ubuntu to respect no read, write, or execute permissions for others set by chmod and Nautilus

I do not want to give 'others' read, write, or execute permissions in certain directories or folders. i.e. /home/me/test I am running 14.04.3 desktop. I have navigated to the folder, selected the ...
1
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0answers
31 views

Move files preserving symbolic links

I have some files on an external hard drive, to which I keep soft symlinks in my home folder (many links, not just one). I need to move some of the original files to another hard drive, and I want to ...
2
votes
1answer
130 views

16 TB what filesystem I should use

I need a 16 TB volume by 6 drives x 4TB. I use the last version of ubuntu. I need the filsytem very stable. How I can created this volume. I should use ext4, xfs, zfs, btrfs, with mdadm ? Thanks a ...
2
votes
0answers
31 views

Gedit not preserving extended attributes on file edit

I'm working on a project where i rely mostly on the file's extended attribute that i set when i create the file. But i'm facing problem while modifying the file. Example: When i edit a text file in ...
1
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0answers
15 views

How does an encrypted file system stay reasonably fast?

I want to encrypt my file system and wondered can my file system stay as fast as it would be without any encryption? If so why, if not how does this affect the read/write operations?
0
votes
1answer
157 views

Where are the files of my /home directory?

I have reinstalled my system after facing some crashing issues with my software. I have a separate / and /home When I am running df -h I obtain: root@sougata-SATELLITE-L750:/home# df -h Filesystem ...
0
votes
0answers
88 views

Low Disk Space on “Filesystem root”

I am using Ubuntu 14.04 with GNOME, and every time I restart the computer it tells me the volume "Filesystem root" has only x MB disk space remaining. I checked with sudo df -h and sudo find / -size ...
0
votes
1answer
50 views

Split a file in two different parts but use it under one path

I would like to split a large file (300GB), which is in my home directory under the dev/sdb1 into two (or more) different parts and move them into two different disk drives. However, I would like my ...
8
votes
1answer
2k views

Why do I need the x permission to cd into a directory? [duplicate]

ls -la prints the following: drwxrwxrw- 2 www-data www-data 4096 Aug 12 11:04 files My username does not belong to www-data. When trying to cd into files I get a "permission denied" though the ...
0
votes
1answer
24 views

Drive not showing up

Every time I start my ubuntu and do a "ls" in "/media/my_username" directory my drive D: is not showing up,but after when I enter the D: using GUI and doing a ls it shows up,can any one help!