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

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0
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2answers
943 views

Bi-directional synchronization of folders on two (or more) machines

At the moment my setup is the following: I have a "file server" machine with the files on it and the laptop connects on each boot via sshfs to a directory on the fileserver. I work on both machines on ...
0
votes
1answer
43 views

How to change the permissions of the sound devices so only audio users can read and write

Summary: I want to know how to change the permissions of my sound devices so that only my user can read and write to them. I thought this could be accomplished by chmod 0660 /dev/dsp* but /dev/dsp* ...
1
vote
1answer
3k views

Mounting Disk Image in Raw format

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 ...
0
votes
0answers
45 views

lvm VG on boot disk (array) not found with vgdisplay but VM VG seen

I have weird problem with VM server and two raid arrays: OS is installed /dev/sda (raid-5 array) with vg-disk (group?) with id vg_server1 which is created during installation. Later on there is ...
1
vote
2answers
2k views

How to wipe/format entire disk using gparted?

With gnome-disk-utility alias palimpsest there is an option to format entire disk with partitioning scheme "none" or something similar. How do I do that in gparted? (? is it the "loop" option ?) Or ...
7
votes
3answers
16k views

Where can I find the location of folders for installed programs?

I'm new to Ubuntu and would like to know where I can find the location of program files for programs installed from the Ubuntu Software Center or the Terminal.
9
votes
4answers
2k views

NTFS -> EXT4 migration, where did 120 GB go?

wim@wim-ubuntu:~/Desktop$ mount | grep media /dev/sdc1 on /media/data type ext4 (rw,nosuid,nodev,uhelper=udisks) /dev/sdb1 on /media/wd type fuseblk ...
0
votes
0answers
35 views

After Ubuntu update Unable to install program from cd-rom using Wine

running Ubuntu 14.04. A few months ago I installed a windows program from a cd-rom using Wine. Program worked fine. Now I wish to update the same windows program using an updated cd-rom. Just prior ...
2
votes
1answer
39 views

To transfer the present ubuntu image to other system

I want my Ubuntu with all installed applications and local files to be transferred to other system, which I ll be dual booting. My present system is also dual booted. I wanted to know if that ...
10
votes
4answers
21k views

How to mount HFS+ drive and ignore permissions

I installed Ubuntu and Windows on my MacBook and Ubuntu is my primary OS; however, all of my media stays on my OSX partition. I want to be able to access it (at least my OSX user's home folder) from ...
0
votes
1answer
65 views

Ubuntu i386 installed with bad DDR2 2GB memory card

After great trial and error, I was able to successfully install the Desktop version of Ubuntu 14.10 i386 on my PC, which is an old DELL Pentium 4 OptiPlex 210L. It was a case where an installation ...
0
votes
3answers
59 views

I'm ubuntu newbie, need help. on Dell 5537

I just got a new Dell 5537 i7 laptop with Ubuntu pre-installation on it. It's my first time to use Ubuntu system. I know may be my questions hav been asked before but frankly I tried to look them up ...
12
votes
6answers
11k views

How folders created in /var/run on each reboot

In recent ubuntus (specifically, what interests me the most is 12.04) /var/run is tmpfs, and thus I assume it starts empty with each reboot. Yet, I see there some folders, like /var/run/mysqld and ...
1
vote
0answers
61 views

Lost+found folder still present even after reformatting partition - how to remove?

I'm trying to reorganize the partitions on the 2 HDDs that I have on my system. One of the partitions (ext4) is 883 GiB (according to gparted) and apparently has 14 GiBs used. However, if I mount ...
1
vote
0answers
88 views

Fat32 mounting as read only

I've edited my /etc/fstab to contain the following: UUID=F285-17E1 /media/TV-1 vfat rw 0 0 UUID=6CBA-1DEC /media/TV-2 vfat rw 0 0 UUID=7D3B-170D /media/TV-3 vfat rw 0 0 UUID=BBFF-1EE4 ...
2
votes
1answer
34 views

Will creating a directory inside a system directory with 777 permission cause security vulnerability?

Can creating directories with 777 permission inside system directories cause any security weakness? For example, say I open a directory called Custom inside /usr/share/backgrounds/ and give it 777 ...
0
votes
1answer
61 views

Whenever I open my home (~) folder with nautilus, there is an endless loading

Ubuntu 14.04. Kernel 3.13.1-031301-generic. If I change to another folder the endless loading (*) from hard drive stops. I don't have much in that folder. Any idea what might cause that, or how I ...
0
votes
1answer
192 views

grub rescue, can't boot from usb

I have ubuntu and windows 8.1 dual boot. Suddenly I got the grub rescue screen. I tried grub rescue > ls command and it lists down (hd0) (hd0,msdos1) (hd0,msdos2) (hd1,msdos1) (hd1) when ...
0
votes
0answers
10 views

Is there a Relation be Uboot and UImage?

Can anyone explain me what is a UImage and how it is related to Uboot ?? I understand that UImage is the kernel Image.. But why it is so called and not a Image file..
0
votes
2answers
20 views

Accessing exported gcode from Slic3r?

I've been using Ubuntu for about a month and am definitely a novice, apologies if this question is trivial. I use a program called Slic3r to create gcode (machine instructions) from stl files for 3D ...
2
votes
1answer
21 views

Can I make a boot drive with my desktop

I want to make a boot drive with all of the system files the same as the files on my desktop. I want to just plug it in and have it boot up with all my settings and files and everything running when I ...
1
vote
0answers
38 views

What would cause a system freeze from navigation to /proc?

This is really driving me crazy, if I pull up nautilus and navigate to /proc, my system will completely freeze up. The only way to get out seems to be to SysReq RSEINUB, but sometimes even that ...
0
votes
0answers
101 views

No mountable file systems on Macbook Pro

Downloaded 14.10 to install on a Macbook Pro. Then I get a message ubuntu-14.10-desktop. no mountable file systems
0
votes
0answers
36 views

expanding filesystem

I`m totaly newb in Linux-like systems. Can u help me expand filesystem? Ubuntu server is hosted on Xen. I have some additional space in hypervisor but do not know how to do resize in the system. ...
0
votes
2answers
34 views

tmp file in root folder with large size/ very long name

As the title, I have this file in root folder and I don't know what it is. Can I safely remove it? -rw------- 1 root root 925M lug 22 15:28 tmpTKb8nhN6ke4IJ bnWrrgcIz-iyhS8H5V ...
0
votes
1answer
105 views

Can't view files on Windows 8 partition

I seem to be having a problem with Windows 8 on my desktop PC (not able to boot), so I created a bootable USB stick with Ubuntu to see if I can use it to access my hard disk and hopefully recover at ...
0
votes
2answers
41 views

What is 'None' that shows up in the filesystem in Ubuntu 14.04.1 LTS?

$ df -h S.ficheros Tamaño Usados Disp Uso% Montado en /dev/sda5 36G 11G 23G 33% / none 4,0K 0 4,0K 0% /sys/fs/cgroup udev 1,5G 4,0K 1,5G 1% ...
0
votes
1answer
33 views

Why are the MBR and GRUB present as files in the Linux filesystem?

A computer's master boot record consists of raw binary and does not reside on any sort of partition. Legacy GRUB and GRUB 2 are installed to the sectors inbetween the end of the MBR and the start of ...
0
votes
0answers
27 views

How to Confirm user group permissions in the current fuse user group

I have created a folder "mtp" in /Media and its /media/mtp. The basic property tells: Type:- Folder(inode/directory) and in Permissions it shows Owner and Group as root. It says you are not the ...
1
vote
2answers
26 views

Number pair prefix to config files

I have noticed some config files having a prefix. E.g. Inside my /etc/php5/cli/conf.d: 05-opcache.ini 10-pdo.ini 20-curl.ini ... Could someone explain this? I am thinking something along the ...
65
votes
1answer
43k views

Differences between /bin, /sbin, /usr/bin, /usr/sbin, /usr/local/bin, /usr/local/sbin [duplicate]

I'm running an Ubuntu Server 13.04, but I see the same on a 12.04: I have six directories with command files. These are: /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin What are the ...
0
votes
2answers
50 views

Is there anyway to undo wipefs?

So I (very stupidly) performed a wipefs on my XFS formatted 4tb Linux (software) raid 5 array in trying to convert over to a bcache setup (I was following some instructions online and should have paid ...
0
votes
1answer
76 views

Cannot delete a folder

I have Segate backup + 1TB external HDD recently since 1 month i am unable to copy the files effectively sometimes the copying is 10 kb/s like that. and sometimes iam getting error like Input/output ...
0
votes
1answer
47 views

chown not working on remote filesystem, other commands (e.g., chmod) do work

I am trying to change the ownership of a file on a remote filesystem, but chown responds with chown: changing ownership of ‘foo’: No such file or directory However, as you can see, foo is there and ...
1
vote
1answer
89 views

File system went read only after adding ssh key

I followed this guide to set up ssh key on my digital ocean droplet, but since I made step 4 my file system went read-only. I changed /etc/ssh/sshd_config from PermitRootLogin yes to PermitRootLogin ...
1
vote
1answer
631 views

print contents of a directory structure (filesystem) to CSV on the command line

How can I catalog the contents of a filesystem to a CSV file? This is particularly useful for removable media. I've found a couple links that point in this direction: AskUbuntu.com: listing files ...
0
votes
1answer
83 views

File creating permission Denied [duplicate]

I have removed Windows 7 and installed Unbuntu 14.04. I have successfully installed LAMP but the problem is that I cannot save a file with a PHP extension in local-server using the Bluefish editor . ...
2
votes
1answer
13k views

Difficulty trying to mount an ISO file “mount: you must specify the filesystem type”

I have an .iso file which I would like to mount. I have made a folder in /mnt/iso as a mount point. Now I try: sudo mount -o loop filename.iso /mnt/iso and the reply is: mount: you must specify ...
0
votes
0answers
34 views

How to disable LVM for sda?

When I installed Ubuntu 14.04, I check use LVM option. I want to disable LVM for sda, but I don't want to wipe this disk. Is it possible?
0
votes
0answers
136 views

Unable to create a directory on a mounted file system (FUSE). mkdir: cannot create directory `dirname': File exists

I was trying out the FUSE file system. I downloaded fuse 2.9.3 and installed it to a directory in my Home directory. I did rest of the work as superuser (as I was denied to manipulate the mounted ...
0
votes
1answer
41 views

Copy a file from one ext4 partition to other

I have two ext4 partition and I want to copy some files from one partition to other in GUI not using terminal, but it does not allow me to do so. It simply a root permission problem. I just want to ...
4
votes
2answers
183 views

Is XFS a distributed file system or a journaling file system?

Is XFS a distributed file system or a journaling file system? In Wikipedia it says that XFS is a journaling file system, but in the Berkely website they mentioned that it is a serverless file ...
0
votes
2answers
1k views

Why have all my files become read-only?

Okay so I was trying to install spotify onto my ubuntu...and I don't know what I did wrong, but I do not have spotify and all of my files have become read-only (everything in the file system has a ...
1
vote
1answer
233 views

Sanddisk drive write protected

My sanddisk usb write protected i tried ashokkrishna@ashokkrishna-Lenovo-B560:~$ sudo mount -o rw /dev/sdc1 /mnt mount: block device /dev/sdc1 is write-protected, mounting read-only # sudo mkfs -t ...
0
votes
0answers
40 views

gdisk before umount -> file system corrupted

I think I did something stupid, but I don't know how to fix it... Please help: I connected a NTFS format 2TB HDD to my ubuntu, and would like to format it to ext4 I mounted it, and copied the files ...
1
vote
0answers
373 views

An error occurred while mounting /

for no reason I have not been able to boot Ubuntu 14.04 today. Splash screen at first displayed "An error occurred while mounting /". I tried to do filesystem check: ubuntu@ubuntu:~$ sudo fsck.ext4 ...
5
votes
2answers
2k views

Block-level deduplicating filesystem

I'm looking for a deduplicating copy-on-write filesystem solution for general user data such as /home and backups of it. It should use online/inline/synchronous deduplication at the block-level using ...
101
votes
6answers
31k views

How to understand the Ubuntu file system layout?

In Windows there’re perhaps only a couple of important folders (by important I mean important in my logical picture of the Windows file system) in the installation drive (in my case C:\). Namely ...
10
votes
1answer
16k views

What represent .Xauthority file?

I had a problem wherein I couldn't get passed the login window in Ubuntu 12.04, even though I have the correct username and password, it still comes back to the login screen. I've found a solution ...
0
votes
1answer
23 views

New File System drivers for ubuntu [closed]

I have done some kernel development previously, simple ones really. I wanted to know what direction I should be looking in to create a custom files system of my own. Most things I have found with a ...