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

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How do I Access Files from one Ubuntu Partition on Another

A terminal error occured on my computer and I found myself unable to log in to Ubuntu. To remedy this, I decided to simply install it again on a partition and then access my saved files on the old ...
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41 views

What files get edited when the system time changes?

If the system time is changed on Linux, what files get edited? I know the timezone is kept in etc/timezone but is there anything if the timezone is not changed, but the time is?
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16 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 Nutilus. I also want to be able to edit the system files usinf VIM or any other text ...
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39 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 ...
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34 views

Make ext3 filesystem with 128 bytes inode size

I need to format external hard disks to EXT3 MBR with the iNode size set to 128 bits. This is for a very specific use, i.e. the delivery of DCP to digital cinema servers. I'd like to be able to do ...
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33 views

SSD Size Dissapearing

I recently have been low on SSD space, I can usually manage with very little space. Today I decided to try to create a Windows VM on VirtualBox. I did a "df -h" to check my disk space left and it ...
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16 views

USB key - folder parameters - changing access rights

There is an MS Windows computer in my lab, which is sadly infected by some strange trojans and viruses. One USB key got into trouble while it was plugged on to the computer. Scanning with an antivirus ...
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23 views

The “size” field in directory entry meaning for directories?

I'm looking at low-level directory structure of a disk partition, formatted as "vfat" filesystem. The directory entry structure I use is: struct __attribute__ ((packed)) Dentry { char ...
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45 views

Files being wiped by cloud storage services

When I move and rename files using Ubuntu One or Grive Tools, using an SSD, sometimes clients doesn't catch the change properly and delete or make to reappear missing folders. Why it could be that?
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102 views

How to check if my installation of Ubuntu is alright?

I recently changed the size of the partition that contained my Ubuntu installation using Gparted from a live CD. I also moved it from one place to another. It was my first time and I hit the cancel ...
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39 views

Can I install ubuntu 12.04 lts using ubuntu 14.04 lts trail version?

So my ubuntu 12.04 files are corrupted so i got ubuntu 14.04 on a flash drive and I am currently booting using the drive. So I was wondering is there and way by which I can reinstall ubuntu 12.04 lts ...
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27 views

Limit the size of a folder

Okay, so I was looking into doing a bit of web hosting, and was wondering how I would put a max storage limit on a folder, so that there can't be more than say 5GB in the one particular folder. I've ...
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72 views

How To Get List Of Files From Audio CD Bash Terminal

I've been using VLC with command line batch files for years to rip audio cds. I just tried writing a similar bash script in Ubuntu 14.04 and was surprised--I can't figure out how to get a list of ...
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51 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 ...
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35 views

Resize Partitions on A Remote Server

I have two partitions, one is about 1.8TB (home) and the other is 20GB (root). I want this to be the other way round, 1.8TB (root) and 20GB (home). I've been reading for some time, but am struggling ...
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63 views

When I mount my RAID5, there is constant activity; how can I figure out what it is?

there. I'm using Ubuntu 13.10 64bit. I have a 4-disk RAID5 (3 disks, 1 spare) setup, and it's completely synced/built, and the ext4 filesystem it contains is clean. When I assemble the RAID, all is ...
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70 views

Deleted files in TMP folder

Today I've downloaded some files and it went into my TMP folder, I doubt it to be a Virus and deleted many files from TMP folder but some of the files didn't get deleted as I don't have sudo ...
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237 views

Some image files won't be displayed by Apache, returns 500 error (file ownership/permissions)

I just copied all my files from one Ubuntu server to another, and everything works fine, except that Apache returns a "ERROR 500 - Internal Server Error!" on image files that on the old server was ...
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22 views

Tailing only updated line of file

I want to tail only the updated line of the file not entire content tail -F /path to file displays all the line from the file. I need to display only the new lines added to the file can anyone help ...
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40 views

ubuntu 10.04 DHCP server upgraded and now severe problems

We have an Ubuntu server at work. It acts as a DHCP server for 5 machines connected to a private 172.x.x.x network for internet access. The machines netboot from an image on the server. I tried to ...
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43 views

File System and Mount Point

I am trying to install Ubuntu 13.04 alongside Windows 7. The Partition that Ubuntu picked up on and tried to install on, wasn't big enough. I created a new partition but I need the File System that ...
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386 views

Netbeans problem with file permisions

After installing netbeans 7.40 and using it for java projects the following problem came up. After creating accidentally a class,when I try to delete it I get a message saying Error : permission ...
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31 views

Creating folders on an ext2 unjournaled drive

I'm currently trying to create a writeable folder on a ext2 drive. I took a usb drive and formatted it to ext3 using gparted. Then I went into terminal and wrote in sudo mkfs.ext2 -j -I 128 ...
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34 views

Repair file names

How can I repair filenames that contains characters that looks like rectangulars with some numbers in it. (Translated from german umlauts) There is a tool like convmv, but I don't know what ...
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345 views

Getting file system free space

This isn't a problem as such, more a request for information based on ignorance of the Linux filesystem. The very short question is: How do I find out how much free and used space there is on the ...
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64 views

problem with 13.04 migration to 13.10

System hung while attempting to update from 13.04 to 13.10. When I attempt to reboot I receive the following message: # Filesystem check or mount failure. # A maintenance shell will now be started. # ...
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103 views

“unknown file system. Grub rescue” won't let me access to BIOS

So I installed Ubutu 13.04 alongside Windows 8 and after a week or so it stopped working and I couldn't figure out how to recover. I went back to windows for a little while and downloaded Ubuntu 12.04 ...
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98 views

How to use Ubuntu with read-only file system?

The question is: what directories of file system I should consider to be mounted as ro (as maximum as possible), and what as rw to use Ubuntu as normal? I want to flash as maximum directories as I can ...
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53 views

Automatically regenerated .fuse_hidden928347928374 files when I try to delete my own

I have an NTFS volume mounted under linux, and periodically, after I've deleted a file of my own, a clone of it will appear in the directory where the actual file was. I can usually delete this file, ...
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309 views

Use IOzone to check read/write performance of ext4 and btrfs?

Can someone help me to use IOzone filesystem benchmark tool on Ubuntu to check the performance of ext4 and btrfs filesystems? I have installed Ubuntu into a VM.
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185 views

Reducing the size of udev filesystem

I have this line in the output of df -h: udev 16G 4.0K 16G 1% /dev What is this thing doing? Do I need it, and if not, how can I reduce the size of it? As far as I know, this ...
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533 views

Slow MicroSD card

I've recently bought a 64GB MicroSD class10 card. Now according to Wikipedia, it should be able to transfer files at a rate of max 10MB/s. But I am only reaching 6.7MB/s (two-third of the promised ...
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32 views

Bug in Krusader lost directory subtree. How to recover the files?

Using Krusader version 2.4.0-beta1 (thanks Canonical for using me as ginnea pig without my knowledge), I renamed two directories to replace the spaces in the names with underscores. Unfortunately, ...
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228 views

Portable Installation on ext2 Flash Drive Won't Boot

I've been running Ubuntu from my flash drive for a while now, but due to the frequent read/write feature of the journaling system, it was excessively slow. I read about how it might be this slow ...
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363 views

How to mount EXT4 drives from another system

I had a testbed 13.04 server which had a boot volume partitioned into three, root, swap and Workspace as well as two other drives running in raid 1. The Workspace and raid volumes were setup using LVM ...
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128 views

Resizing Partions with GParted

So here's the situation: After installing Ubuntu 12.04 LTS, Running df -h gives me the following partitions: /dev/loop0 , 29G, 9.3G, 19G, 33%, / udev, 1.9G, 4.0K, 1.9G, 1%, ...
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2k views

How do I make a read-only file system writable for pendrive

When I am trying to format my pendrive, I'm getting the following error. root@obbu-G41M-Combo:/home/obbu# mkfs.vfat -n 'Ubuntu' -I /dev/sdb1 mkfs.vfat 3.0.14 (23 Jan 2023) mkfs.vfat: unable to open ...
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56 views

regarding file copying in ubuntu 12.04

i have to replace my hard disk drive (not a usb type HDD, 500gb) so i have backed up content to some other hardisk (not a usb HDD, 80gb). Then i brought a new HDD also installed ubuntu 12.04 & ...
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73 views

How to create a directory in “/”

I'm trying to build my own linux distro using "linux from scratch" project. In order to do so I need to access different features, On my development process I went through many troubles in Ubuntu One ...
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114 views

How to remove duplicated directory?

I have two directory with same name of "Unread". ls -l drwx------ 1 vg vg 200 Aug 4 21:57 Unread drwx------ 1 vg vg 200 Aug 4 21:57 Unread when I rm/mv the directory named "Unread", one ...
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202 views

HDD and SSD configuration

I had just bought a system76 laptop that is preinstalled with Ubuntu 13.04, and has a nice SSD and HDD setup. The problem is that the laptop's hdd comes unpartioned and unformatted, while the entire ...
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220 views

How to disable disk lock?

I am a new Ubuntu user and have recently installed Ubuntu 12.04 to my computer. Now every time I turn on the computer it keeps asking me to introduce a password for the Disk Lock or something before ...
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100 views

“Ownerless” (no permission) SSD-friendly filesystem

A bit of context and needs: Most time I'm using Ubuntu machines. I have a laptop which I do not carry around a lot, so I'm in usermode (no admin permissions) lots of time. I have a large and fast ...
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158 views

How can I remove this file?

I'm using an Apple Timecapsule mounted via gvfs-mount (I tried cifs too) which contains a file named Capitoli 3:5.odt I definitely want to remove that but I had no luck. From ubuntu the most i ...
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249 views

How to set password for hdd partition mounting

I am using Ubuntu 13.04 x86_64. I have one extra ext4 partition of 90 GB beside my / partition. I want to ask the user to enter a password whenever he/she tries to mount that extra partition by say ...
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155 views

Error: Unknown Filesystem HELP!

Ok, I am new to Ubuntu and know almost no terminology and don't know a whole lot about computers. So I wanted to install ubuntu so i burned it onto a flashdrive and when I tried booting it I got, ...
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71 views

My harddisk is facing problems

How do I image the disk and copy it to new disk to avoid reinstalling Ubuntu and Windows 8. Are there any special steps; since I am dealing with a dual boot windows 8 and I am replacing one of two ...
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148 views

Did not found root folder browser after upgrading to latest

Today I have upgrade my system with ubuntu 13.04 . But I Did not found the root file system . Please help me how do I access the files , a lot of files are in /opt folder . Thanks Biplab
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508 views

Unable to transfer files from laptop to USB due to permission error

I am unable to transfer file from my system with Ubuntu 11.10 OS to a USB drivee (Hp 16GB). When I copy files from system and try to paste in USB the paste option gets disable. But the reverse is ...
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97 views

Where can I find what filesystem lvm2 uses/

After a default installation of Xubuntu (12.10) on a SSD card, I now have the following set up: A SATA disk: /dev/sda1 --> extended /dev/sda5 --> ext4 (mount point: /media/mark/ A SSD disk: ...