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

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2
votes
0answers
184 views

orphaned inodes on root file system (ext4); persistent problem

On my trusty systems (VMs under vmWare, desktops, and laptops), we have the following issue. The root file system seems to have inodes that are never marked as "free". After a month of a working ...
-1
votes
1answer
172 views

How to format a HDD in ubuntu 14.04

So i recently switched to Ubuntu from Opensuse, and i'm loving it. There's one problem though. I've found that the control centre is minimalistic (to say the least) and, coming from a guy with Yast2, ...
1
vote
2answers
39 views

Difference between /usr and /home from installation perspective

I am not a pro in Linux and I was thinking that where does the files get stored when I do apt-get install. I understand that different linux distributions do things differently, but I am taking a ...
1
vote
1answer
40 views

Two Volumes? Want to Merge!

I apologize ahead of time for how confusing this may be. I am very new to things such as partitions, disks, and hard drives. When I installed Ubuntu there were two options, install on a 24 GB HD and ...
8
votes
1answer
9k views

How to merge folders and subfolders?

I have two folders (ORIGINAL A and ORIGINAL B), and both do have subfolders. How do I merge these two folders (and subfolders) to DESTINATION C? a) ORIGINAL A and ORIGINAL B do have the same ...
0
votes
0answers
29 views

Grub “unknown filesystem” Boot-Repair didn't find a solution

after booting my PC yesterday I encountered a Boot-Error and only the grub rescue prompt. error: unknown filesystem. After searching the Internet I booted into the Boot-Repair and tried the standard ...
1
vote
1answer
103 views

Macintosh HD will only mount ro, because it is journaled

A little history first, I've installed 14.04 on another partition of a MacBook 5.1 because of a completely botched Mavericks upgrade which has left OS X unusable. I had to use rEFInd to get it to ...
1
vote
1answer
169 views

what does device node 'none' means in file system?

when I tried $ mount command on my system (14.04 LTS), I found some of the results like... none on /sys/fs/cgroup type tmpfs (rw) none on /sys/fs/fuse/connections type fusectl (rw) none on ...
0
votes
1answer
73 views

what are the specifications a mount command provide?

while reading about linux I got the following.. Typing mount without any arguments will show all presently mounted filesystems. when I tried this on my system , I got.. anupam@JAZZ:~$ mount ...
0
votes
0answers
33 views

Computer randomly wen't into read only filesystem

I was just typing in AbiWord and opened up the filesystem and realized everything had the 'lock' image over it. So I opened the terminal to run an update to see if everything was alright and just as I ...
0
votes
2answers
6k views

Is It Possible To Recover A Partial LVM Logical Volume?

Background It is an Ubuntu 12.04 VirtualBox VM with 5 virtual HDDs (VDI), NOTE this is just a test VM, so not well planned ahead: ubuntu.vdi for / (/dev/mapper/ubuntu-root AKA /dev/ubuntu/root) and ...
0
votes
0answers
31 views

Understanding result of sudo fdisk -l

Please help me decipher the following terminal response: sudo fdisk -l Disk /dev/sda: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors Units = ...
0
votes
0answers
49 views

Unable to mount gfs2 in 14.04

I've installed gfs2-utils 3.1.6-0ubuntu1. The package has a broken symbolic link, /usr/sbin/gfs2_mount, which points to a non-existing /sbin/mount.gfs2. Therefore mounting fails with 'unknown ...
0
votes
1answer
212 views

Unable to mount cifs with iocharset=utf8 in trusty

When I try to mount a cifs share with option iocharset=utf8 I receive the error: mount error 79 = Can not access a needed shared library. What shared library am I missing?
1
vote
0answers
25 views

Is ext4 position independent and movable?

Does the data in an ext4 filesystem refer to absolute positions on the disk, or is it all relative to the start of the specific partition? I want to know this because I want to move an ext4 ...
48
votes
7answers
140k views

How do I view all available HDD's/partitions?

I found a 6 GB IDE HDD in my basement. I want to plug it in and see what might be on it. The drive seems to be recognized in BIOS. I can't find it in Ubuntu to view files, and Ubuntu is the only OS ...
9
votes
1answer
434 views

use of * in file searching

while reading about linux file searching I got the following... To search for files using the * wildcard, replace the unknown string with *, e.g. if you remember only that the extension was .out, ...
-1
votes
1answer
32 views

is source code for bash sufficient, when I want source code of ext4?

when I want to know the source code of ext4-filesystem (mkfs.ext4) - is it then sufficient to download the source code for bash ? - or do I need else source-codes after I did : sudo apt-get ...
4
votes
2answers
7k views

df reports an ext4 partition is full, but there is no data

I recently received a warning, that my home-partition is full. It is an Ext4-Partition mounted on /home, /dev/sda is a 240 GB SSD: hannes@XFLR6 ~> df -h Filesystem Size Used Avail Use% ...
0
votes
1answer
111 views

How to access an Androidphone's filesystem

I want to have access to my rooted Android-phone's filesystem using a USB-cabel-connection and either a Terminal or File Manager with GUI. I also want to be able to edit the system files using VIM or ...
0
votes
1answer
176 views

The best way to create a root filesystem, split between read only and writable

My aim is to create a system where the main parts of the root filesystem are stored on a read-only SD card, with writeable parts located on an SSD set to rw. This is to be done with a view to keeping ...
0
votes
1answer
33 views

Disk Usage Analysys..

On my virtual Ubuntu Desktop (HD: 300 GB), Disk usage analyzer shows: and the df-l command shows: This is strange! If the root consumes only 59.6 GB, How the filesystem capacity says it uses ...
0
votes
1answer
78 views

No root file system

I have almost the same problem with the link below. "No root file system defined" error while installing ubuntu In my part, I had a problem with my drive about bitlocker key. I didnt have ...
0
votes
0answers
311 views

mount: unknown filesystem type 'LVM2_member'

I am having mysql in /home and /home partition automatically unmounts at reboot. If I try to mount, it mounts but shows unknown filesystem. If I mount it forcefully by providing filesystem, it mounts ...
2
votes
1answer
39 views

What are folders and how do they work?

In Ubuntu and ext4, how do folders work exactly? Are they solely virtual and take up no disc space? Do they actually take up space? Can I fill up my 1TB backup drive with nothing but folders? ...
1
vote
0answers
108 views

Slow network and file copy performance

I'm experiencing a weird problem with my Kubuntu installation. I'm running 14.4 now that was upgraded at least twice using the built-in distribution upgrade. The problems started after the last ...
60
votes
5answers
23k views
0
votes
1answer
152 views

Is there anything that ext4. btrfs, or F2FS can do for a usb3.0 thumb drive that fat does not do? [closed]

I don't particularly care about cross platform. I have a thumb drive, and what to know if there is anything to gain from formatting it to ext4, btrfs, or f2fs. Thanks
94
votes
5answers
91k views

How is the /tmp directory cleaned up?

How is the /tmp directory cleaned up? Is it automatic? If so, how frequently is it cleaned up?
0
votes
0answers
25 views

Files writable under /proc, what's the Purpose?

While exploring /proc directory in root, I find some files are writable, as /proc is pseudo file system, so every time system gets boot, this will come in existence and will be deleted(ie No physical ...
0
votes
0answers
19 views

Base system failed

I'm installing Ubuntu on a Gateway laptop, I got a error: Install base system failed, target file system contains files from a past installation. These files can cause problems with the installation ...
0
votes
0answers
228 views

Setting default UMASK to “027” and USERGROUPS_ENAB to “yes” in /etc/login.defs

I don't understand the following from: /etc/login.defs # If USERGROUPS_ENAB is set to "yes", that will modify this UMASK default value # for private user groups, i. e. the uid is the same as gid, and ...
13
votes
4answers
2k views

What does /dev/null mean in a shell script?

I've started learning bash scripting by using this guide: http://www.tldp.org/LDP/abs/abs-guide.pdf However I got stuck at the first script: cd /var/log cat /dev/null > messages cat /dev/null ...
1
vote
2answers
736 views

Which process creates the 'Desktop' folder?

I don't use gnome nor kde desktops because my system isn't as fast as they require it to be, but even when I don't use them, a 'Desktop' folder is always in my home dir, I've delete it several times ...
0
votes
1answer
36 views

usb drive filesystem?

So, school is approaching quickly, and one of the things on my supply list is a usb drive. Now I'm asking myself what filesystem to use. After some research, I found ext4 to be the most stable drive ...
2
votes
1answer
41 views

How to prevent data from being written into a directory?

Or: How to make a directory write protected, for all users until unlocked again?
0
votes
0answers
37 views

ubuntu svn checkout random failed

Using buildbot to run some test . The svn step random failed , The error messages like : svn: E140001: zlib (uncompress): corrupt data: Decompression of svndiff data failed or svn: Malformed ...
0
votes
0answers
92 views

How to recover Shift+delete files

I just shift-deleted some files from folder which has .avl file extension. Is there any way that I can recover my files?
4
votes
4answers
8k views

Cannot transfer file due to “Filesystem does not support symbolic links” error

When I want to transfer files from my local hard drive to my thumbdrive, I keep getting this error: Filesystem does not support symbolic links. I don't know what this is, I need help with ...
9
votes
4answers
19k 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
0answers
65 views

Ubuntu 14.04 Sublime Text 2: file suddenly empty. How to recover it?

a file that was open by Sublime Text 2 got suddenly empty. Maybe because the disk was full, and the program, that was executing this file, crashed. Is there a way to recover the content? I am using ...
19
votes
6answers
114k views

How to fix “sudo: unable to open … Read-only file system”?

The title might not be as descriptive as I would like it to be but couldn't come up with a better one. My server's file system went into Read-only. And I don't understand why it does so and how to ...
0
votes
1answer
545 views

13.10 to 14.04: Filesystem mount failed: How get to maintenance shell?

While upgrading from 13.10 to 14.04 we got a power cut: When we restarted the machine we got a system fail; I'm getting the readout below: 'Filesystem check or mount failed. A maintenance shell will ...
17
votes
2answers
2k views

How to find the creation time of a file?

I need to find the creation time of a file, when I read some article about this issue, all mentioned that there is no solution like Site1, Site2. When I tried stat command it state Birth: - So how ...
0
votes
1answer
41 views

Ubuntu ISO Structure

I am working on an ubuntu iso personalization script based on the buggy uck .. The uck team seemed to know what they were doing, they used the structure of the ubuntu iso image a lot .. The problem ...
3
votes
2answers
710 views

Did I lose my RAID again?

A little history: 2 years ago I was really excited to find out that mdadm is so powerful that it even can reshape arrays, so you can start with a smaller array and then grow it as you need. I've ...
0
votes
1answer
54 views

remove directory to Grandpa directory and delete the parent directory

Sometimes , we note that we have unuseful nested containers(directrories) . For example mkdir -p ~/grandpa/pa; And pa directory is the only file existed on grandpa. Hence , all files of pa ...
-1
votes
1answer
132 views

To extend the partition allotted for ubuntu 14.04 LTS

I am currently running windows 8.1 and ubuntu 14.04LTS, initially i allotted only 10GB partition to it,as it is not sufficient how can i extend my ubuntu partition without affecting windows. ...
1
vote
1answer
46 views

Ubuntu 13.04 to 13.10 upgrade has made drive inaccesable

I recently upgraded to 13.10 from 13.04 , and encountered kernel panic on restarting the system. I have some uncommited code on my drive , so I planed to use live usb to take it out but unfortunately ...
1
vote
1answer
51 views

System runs out of space, space returns after restart

I have no many details except this - After a while my system is using more than 80% of the file system but after the restart it returns to usage of 9%. I have no idea why it happens and therefore I ...