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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44 views

Can't mount encrypted usb stick

I had a truecrypt encrypted usb stick, which I decided to reencrypt in LUKS through disk-utilities. I encrypted it, tested if I can mount it and put all my files on it. However, after a reboot I can't ...
0
votes
1answer
30 views
0
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0answers
101 views

VFS: Can't find ext4 filesystem

I'm using a Ubuntu 14.04 server. There are errors in the /var/log/syslog file, like this: Jun 26 11:25:36 compute4 kernel: [64813.543046] FAT-fs (nbd4): bogus number of reserved sectors Jun 26 ...
1
vote
1answer
48 views

Install ubuntu with the command line

I want to install Ubuntu without using Ubiquity. I want to install it through the command line only. Not looking for Ubuntu Server install. Just help on how I can install it through the command line. ...
6
votes
3answers
925 views

Symlinks and their paths are confusing - how can they be used effectively?

When exploring directories from a symlink (symbolic link) using Nautilus or Gnome Commander, the directory structure is displayed as if the symlink were a regular directory. When I open a document, ...
3
votes
3answers
3k views

CHOWN: What does “id -u” represent

I am working to get Mongodb running on a Ubuntu server install. In reviewing the instructions I needed to create a "\data\db" directory in the root drive. At which point I needed to alter the owner ...
2
votes
2answers
2k views

Occasional excessive IOWait freezes computer - how to diagnose?

I have a very slow SSD on an eeepc900A, and it occasionally freezes the OS (even the mouse pointer) with system monitor showing excessive IOWait. How can I diagnose what is causing this and should ...
1
vote
2answers
814 views

Finding the file system explorer application in a default desktop install?

I'm new to Ubuntu in general (using 10.04) and from the default Ubuntu desktop after a default Ubuntu desktop install, cannot find the file system explorer program in the top application menu. ...
0
votes
1answer
109 views

File system root low disk space

I installed Ubuntu Gnome 14.04 a month back. It all worked perfect but after two days I repeatedly got the notification - File system root low disk space 0 MB left. I had installed everything ...
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0answers
20 views

File transfer to virtualBox issue - files have the original URL for a name, all files in the same subfolder

I am trying to get some files onto my virtualBox. I have run into an issue. I tried "dragging and dropping" a folder with many subfolders to my machine, and now all of the files are not organized in ...
1
vote
3answers
67 views

error removing file no such file or directory

I am not being able to delete certain files with an error no such file or directory. A file on my desktop as well as a file in my movies folder is not being deleted. I am 100% sure the problem isn't ...
9
votes
3answers
28k views

Gtk-WARNING : Calling Inhibit failed

I was trying to use gedit, when I came across the following problem: myPC@TM77:~$ sudo gedit /etc/pm/config.d/config (gedit:12512): IBUS-WARNING **: The owner of /home/myPC/.config/ibus/bus is not ...
2
votes
1answer
252 views

What is upstart and why has it made a 38.1 GB file in ~/.cache

Randomly today I got a "disk is full" dialog, indicating I only had 1gb left on / and this quickly became 100mb of free space. So I ran the disk analyzer and found a massive 38.1 GB in ...
38
votes
3answers
75k views

How do I change file system in recovery mode to read-write mode?

I have messed up my sudoers file and I want to change the permission on it. When I login in recovery mode, I cannot run the command chmod as it is read-only option. I tried mount -o remount,rw / in ...
0
votes
1answer
88 views

Problem reading exFAT XQD card Ubuntu 12.04

I am having a problem reading files from an exFAT formatted XQD card. The card was formatted by a Sony fs7 camera and contains 4k video files shot using the fs7. The card is a lexar 64gb and the card ...
0
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0answers
13 views

Ext3 Journaling Questions

I was going through Journaling and JBD and wanted to ask you a very basic question for which I was not getting an answer: Why Journal Inode number comes as 8 when we do ./dumpe2fs? So far my ...
66
votes
5answers
32k views

Why is defragmentation unnecessary?

Why is defragmenting unnecessary in Ubuntu?
3
votes
2answers
779 views

2015: Is BTRFS stable?

I know, questions like this have been asked before, but I'd like to get some up to date experiences.. From what I've read in various discussions, BTRFS seems like it's relatively stable, but once in a ...
2
votes
1answer
48 views

How to view folders with a large amount of files? [duplicate]

I have folder, for example, with 1500000 images. I'm trying to open that folder to scroll through files, look at them and open some that I want to look at in image viewer. But when I open that folder ...
28
votes
7answers
177k 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 ...
5
votes
1answer
96 views

An inaccessible directory with a random name has appeared in my home directory

It's name is KAzdyLisjm and when I try to list it's contents or delete it, those operations never return a result. It does appear to occupy over 300MB of space though, according to ls -lh, from the ...
0
votes
1answer
61 views

How are reserved GDT blocks used after online resizing?

I am working on Ext3 and after looking at FS layout - ext3 reserves ~1024 blocks as Reserved Group Descriptor Table (reserved GDT blocks are between Group Descriptor blocks and Bitmap blocks). These ...
1
vote
0answers
48 views

How can I repair my LUKS / ext4 file system?

my computer was running the whole night and my only open windows where IntelliJ IDEA and Google Chrome. Today my file system seems completely corrupted. Linux Mint can't read any files and folders ...
2
votes
2answers
282 views

Can't mount ISO file as loop device: Error: “failed to setup loop device”

sudo mkdir -p /media/cdrom cd ~ sudo mount -o loop ubuntu-* / mount: ubuntu-*: failed to setup loop device: No such file or directory
0
votes
2answers
23 views

Where should I put an executable jar?

Executable files (built programs and shell scripts) normally go in /bin or /usr/bin but what about a jar file? It is a 'program' making me think it should go in bin, but on the other hand it requires ...
0
votes
1answer
38 views

Strange data file in /

I have got a strange data file in my / directory for some months. It's named tmpUGy0UNqBDAN8BRg_iwbGcvv6S .w62on1kHPb4UtBeezebArfjiGrbJLSdyO6MX7tz_qUyFLz53UZaMWRN ...
0
votes
1answer
29 views

Ext4 to Ext4 file copy slows down whole system

When I try to copy big file/files >= 10 GB, my whole system slows down. Applications take long time to open. Even I can't type smoothly, video player starts frame drop. But everything goes normal ...
2
votes
3answers
188 views

Disk space issue after apt-get update

I did a system update with sudo apt-get update and rebooted. After the reboot an error came up showing that i'm out of disk space. was barly able to access my desktop. I checked the space util and ...
1
vote
2answers
60 views

How to view designated Ubuntu file partition after installing Ubuntu?

I was finally able to get Ubuntu 15.04 to fully install and boot on my laptop. Then found that when I opened the file manager, there was only one of my two partitions (I have one for windows and one ...
1
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0answers
32 views

add/delete ubuntu specific folder or file right click context using bash

I want to change the right click context menu of ubuntu specific folder using bash script. When bash script executes, it first create a file or folder having only two right click context menu option. ...
0
votes
1answer
152 views

BTRFS bad tree block start

First some background on my setup. I have 7 Hard Drives in a raid 5 (I know, move to raid 6, but not the issue here) array. On top of that, I run LVM, with a partition for btrfs. BTRFS is at version ...
66
votes
10answers
121k views

What is the equivalent to the Windows “Program Files” folder? (Where do things go when I install them?)

What is the Ubuntu equivalent to the Windows C:\Program Files folder? This is where Windows stores the system wide data for applications.
1
vote
3answers
66 views

do I still have to defrag my NTFS drive

so I know that my primary ext SSD doesn't need to be defragmented, but I have a storage HDD that is formatted as NTFS. Does this drive still need to be defragged? If so, what programs would you ...
1
vote
1answer
61 views

Is it safe to delete /media/cdrom?

My Ubuntu Server media center install doesn't have a CD drive (and never has) but it still has a /media/cdrom directory. I assume it's there to act as a mount point if a CD were inserted into a ...
1
vote
1answer
64 views

Massive filesystem corruption after latest update on LUKS encrypted drive

I booted my machine this morning and was greeted by a busybox shell. I booted from a live USB, mounted the drive with cryptsetup, but when I try to open it it says my ubunutu--root-vg has an ...
0
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0answers
36 views

Filesystems not mounting on boot?

I'm getting this fail after rebooting: I tried the instructions here and no dice. I also found a thread about getting rid of Btrfs but I'm not sure if that's a good idea to try. This is all on ...
12
votes
2answers
41k views

Where does Wine install programs in the filesystem?

I have recently installed MS Office using Wine. Can someone tell me where are the files installed. I mean like in Windows application are installed in program files folder by default, where are they ...
0
votes
0answers
18 views

How do I remove syslog after centralizing to a remote server?

How do I remove syslog from a client after I have centralized it to a sever? Here are my syslog configurations of the client server $ModLoad imtcp $InputTCPServerRun 514 @@:192.168.0.101 I want to ...
42
votes
4answers
49k views

How do I avoid the “S to Skip” message on boot?

After upgrading my laptop from karmic to lucid, my fat32 partition won't mount automatically. I get the message: The disk drive for /osshare is not ready yet or not present Continue to wait; or Press ...
0
votes
0answers
23 views

How many number this file has been modified before?

I suppose this is not that easy, but for that I'm asking here. So my question is how to record all modifications have done to certain file. In other words I would know how many times a given file is ...
2
votes
4answers
447 views

Count how many files exist on system?

Is there a way to count how many files/folders exist on the system? Even better if i could get the list into a csv file?
14
votes
5answers
40k views

Command line option to check which filesystem I am using?

Is there a command that will show which file system (ext3, ext4, FAT32, ...) the various partitions and disks are using? Similar to how sudo fdisk -l lists information about disks and partitions?
2
votes
1answer
77 views

Supported filesystems for Ubuntu touch

So I've got the new BQ Aquaris E4.5 with Ubuntu OS, and put in my SD card which is formatted on NTFS. It's not surprising that my phone does not recognize anything on the card, and i think Ext4 ...
1
vote
1answer
643 views

Delete files on HDD while using LiveCD

I've got a little problem. After installing the latest upadates Ubuntu 13.10 (IIRC) and rebooting, I can access the GUI log-in interface, but after entering my password the monitor remains black with ...
1
vote
1answer
48 views

recover filesystem from nuked hard drive

OK, I'll admit it, it was a dumb thing to do. I was using dd to copy a disk image onto an SD card for a Raspberry PI, but managed to copy the image onto /dev/sda instead of /dev/sdc. Problem now is, ...
0
votes
1answer
59 views

Question about install Ubuntu

Today I tried to reinstall my Ubuntu 12.04 LTS through a USB flash, at first time I chose the default partition plan, then I found that there is no /home partition, and I think remount a /home is much ...
2
votes
1answer
336 views

SD card is recognized but won't mount “can't read superblock”

When attempting to look at the files on my SD card I get the following message. ## Unable to access “16 GB Volume” ## Error mounting /dev/mmcblk0p1 at /media/automat0n/6366-3430: Command-line `mount ...
0
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0answers
42 views

Ubuntu 14.04, ext4 remounts read-only 10-30 minutes after hibernate

After waking the laptop from hibernate, it successfully resumes. There are no errors in /var/log/pm-suspend.log and the filesystem is mounted read-write. After 10-30 minutes of regular use including ...
1
vote
0answers
53 views

sh file installation (CMake package)

newbie's question : I need to install latest cmake on my ubuntu. I've downloaded .sh file allowed this to execute as a program and run. seems it was not a fully functional setup but an archive only ...
0
votes
1answer
45 views

How to add directory bookmark when the parent directory is not readable?

In file dialogs and file managers, it's possible to add bookmarks representing directories, used similar to other "places". To add a bookmark for a directory, I have to enter the parent directory and ...