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

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6
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3answers
3k views

The best choice of linux file system and software that can be accesed from Windows

I am curently having ubuntu and win 7 dual boot and I want to delete my windows 7 and format all my partitions to use a linux file system. But I want to leave a door open in case I have any problems ...
6
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2answers
4k views

Why do I get more free space than ext4 after formatting in XFS?

I've bought a 1TB external hard drive and after formatting the entire drive in ext4 Nautilus says there are 934.3 GB of free space. I've also tested formatting the drive in XFS, and in this case ...
6
votes
3answers
1k views

How can I find the total size of the contents of my Trash folder?

Is there any way I can find out exactly how much is in my Trash folder? I can see the size column, but if I have a folder in the trash, it shows the number of items in the folder rather than the total ...
6
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2answers
1k views

Where is the journal stored?

I was reading trough the link on journaling-filesystems and i would like to know where exactly is the journal stored in my Harddisk. Some pointers on this image shown below Thanks, Sen
6
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3answers
15k views

Where to install software and executables for all users

By default some applications install into /usr/local/bin, but if I change users will that user be able to access this application? I read somewhere here (another question) that I should use /opt? But ...
6
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1answer
3k views

Will 11.04 use other filesystem than ext4?

I heard something of a filesystem change. Is it gonna happen in 11.04?
6
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3answers
5k views

Fsck gets mad when the file system is mounted

When I run fsck -fy in a terminal it says something similar to: WARNING!! FILE SYSTEM MOUNTED!! You will cause seviere damages. Why is that? This might be a little off-topic but I ran that ...
6
votes
3answers
628 views

What's the difference between “cd ../” vs. “cd /..”?

What do these two commands mean? cd ../ cd /.. I am ending up in two directories upwards the tree on the first command and in the root directory from the second command. Why does that happen?
6
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3answers
4k views

How to speed up rsync/tar of large Maildir?

I have a very large Maildir I am copying to a new machine (over 100BASE-T) with rsync. The progress is slow. VERY SLOW. Like 1 MB/s slow. I think this is because it is a lot of small files that ...
6
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2answers
220 views

I can continue playing a video after I Shift-Delete it. Is the disk-space freed when I close player?

I've noticed that I can actually Shift-Delete (ie. doesn't go to Trash) a video which is currently playing, and it still keeps on playing, even though there is no named reference to it in nautilus or ...
6
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2answers
10k views

Cdrom is mounted, but where?

A Nautilus folder will be opened automatically when inserting a CD in a drive. It is under Devices with name Audiodisk. As long as the files are accessed via Nautilus everything is fine. The problem ...
6
votes
1answer
2k views

What does “whiteout” mean in a copy-on-write filesystem?

The manual for aufs makes several references to something called a "whiteout", but it's not clear to me what this is. What is a whiteout and why would one exist?
6
votes
1answer
895 views

Is My Filesystem Corrupt or Something?

OK, so for the past 2 days my Ubuntu Install (10.10) has been acting in a very strange manner. Just after the login process is done, and the desktop is loading everything seems to be fine, it is fast ...
6
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2answers
3k views

Why has Ubuntu moved the default mount points?

Why has Ubuntu and many other Linux distributions moved the default mount points from /media to /media/$USER Example I plug in a USB drive and it's name is EXT4-250GB-USB it used to show up in ...
6
votes
2answers
6k views

What is the default character encoding?

I don't myself know how deep this question actually goes (for example, for all I know there could be several, depending on my task). Particularly, I am interested in what kinds of strings are used to ...
6
votes
1answer
781 views

Where on the filesytem could a user find the Unity scope files?

I am wanting to find the Unity scope folder so that I can study how the scopes are set up and programmed. Where on the filesytem could I find the Unity scope files?
6
votes
2answers
5k views

What is the easiest way to merge / and /home?

I have separate / and /home partitions, of which both use ext4 as their filesystem. How can I merge them, and what is the easiest way?
6
votes
2answers
2k views

Technical differences between ways in which UNIX and Windows “mount” devices

Question from which this arose is here: What does it mean to mount something? Since asking about which is "better" or which "worse" can lead to subjective and argumentative answers, I'd like to know ...
6
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2answers
177 views

How can I know which folders are created by which program?

I have /usr/share/gtksourceview-2.0/ and I think it maybe due to Mousepad or Geany or Medit text editors. But how can I know for sure without uninstalling them and reinstalling one-by-one? (I don't ...
6
votes
3answers
2k views

Is it possible to take a snapshot of / (or other) filesystem, like in VirtualBox?

Taking snapshot of root partition will make possible to roll back to previous state. This is very helpful when something went wrong and/or data loss occurs. This feature can be seen in VirtualBox HDD ...
6
votes
2answers
43k views

Mount USB drive with write permissions for everyone or specific user

I know there are similar questions but I get some specific problem I can't overcome. I have: HDD split into two partitions. /dev/sdb1 and /dev/sdb2. sdb1 is NTFS and I don't need it. I need sdb2 ...
6
votes
2answers
2k views

What differences do I need to know choosing between ext4 and NTFS (Performance etc)

I understand that ext4 if faster than NTFS. But whats the speed difference if its like < 20MB/s, perhaps its better to use NTFS for convinence? What are the other implications of this apart from ...
6
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2answers
3k views

Can I configure low disk space warning to a lesser threshold?

Ubuntu warns me about low disk space even when there are about 2 GiBs free. For me "low disk space" is 50 MiB or less as I use to use my disks at 100% capacity. The warning could be useful for me if ...
6
votes
2answers
675 views

Tell the kernel to strongly cache a particular directory

This question is a rephrasing of Optimizing EXT4 performance. I have a directory that contains build files, most very small, but totaling 5.6G. I usually access the same subset of files (some ...
6
votes
2answers
580 views

How can I create a filesystem “view” of a folder that excludes certain files?

I want to have a path in the filesystem that shows the entire contents of some other path, excluding a few certain files of my choosing. For example, if the following already exists, original-path ...
6
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2answers
3k views

Can I override an SD card's write-protect switch?

The write-protect switch on an SD card doesn't connect to any internal electronics, so it must just be respected by the software controlling the card reader. Is there any way for me to override this ...
6
votes
3answers
955 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, ...
6
votes
1answer
7k views

Ubuntu goes into read-only mode randomly

For the last few days, my Ubuntu 12.10 has been going to read-only mode randomly, making me unable to save any edited files, and forcing me to restart my computer, which is a pain because this is the ...
6
votes
1answer
3k views

What is a safe ulimit ceiling?

This is the output of ulimit -a core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) ...
6
votes
1answer
3k views

System displays “File system maintenance error, press ctrl+d” while booting

In my office I've Ubuntu 8.10 desktop installed and it's running for a long time. When ever the system is started, I'll get a file system maintenance error and something it's prompted for the root ...
6
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3answers
1k views

1TB SATA HDrive on Marvell Adapter disappears after 10.10 upgrade - Why?

Thanks for taking the time. I have a problem I've never had after an upgrade. One of my hard drive, a 1TB NTFS drive connected with the marvell SATA connector (88sx or smth like that ) to my Asus ...
6
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2answers
9k views

Why does Ubuntu 13.10 not detect my Win7 partition?

I'm trying to install Ubuntu 13.10 alongside Windows 7 on my DELL INSPIRON 14z 5423 laptop and I'm new to all of this. I'm using the Ubuntu 13.10 64-bit ISO burned onto a CD. The first time I tried ...
6
votes
1answer
101 views

Resized VirtualBox VM disk, but when partitioning can't use all new available space

yesterday I've resized a VM Virtual disk from about 15 GB to about 26 GB. If I run fdisk I can check that disk is resized: Disk /dev/sda: 26.2 GB, 26214400000 bytes 255 testine, 63 settori/tracce, ...
6
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1answer
889 views

File operations freeze when putting files larger than 10MB on an SD card [closed]

I have the newest Ubuntu 13 with all updates. When copying files to my 32GB SD card, the file operations freeze just before it finishes. It does not complete. Files greater than 10MB do this. ...
5
votes
4answers
919 views

Ubuntu won't allow to use “/” symbol

I'm trying to rename directory and I need to use "/" symbol but ubuntu won't allow it. Is where any way to "cheat" ubuntu into allowing me to use it?
5
votes
5answers
19k views

How to mount a yaffs2 filesystem

I have a .img file that uses the yaffs2 filesystem (an Android partition image) that I want to mount. I can't seem to do it with the mount command. How can I do this? I'm using Ubuntu 12.04. Also, I ...
5
votes
2answers
2k views

Which book should I buy to learn file system in Ubuntu? [duplicate]

Possible Duplicate: How to understand the Ubuntu file system layout? I am very new to Ubuntu and Linux and looking to learn Ubuntu/Linux. Which book should I buy to learn file system in ...
5
votes
5answers
3k views

I created a separate /home partition, is this a good idea?

I have a question that I do not know exactly how to address, so I'm deeply sorry if this one has already been posted by other users. I'm an extremely newbie with Linux, but very eager to learn. ...
5
votes
3answers
13k views

Very large log files, what should I do?

(This question deals with a similar issue, but it talks about a rotated log file.) Today I got a system message regarding very low /var space. As usual I executed the commands in the line of sudo ...
5
votes
2answers
5k views

Why cant I create a directory in /sys

I'm learning Ubuntu and experimenting with things. I noticed I couldnt create a directory within /sys Is this a special directory or something? Are there other types of directories? (I did a sudo ...
5
votes
3answers
741 views

Is possible to make symlinks that 'follow' the file?

Behavior: me@local: tree . |-- ba | `-- file.txt |-- foo | `-- file.txt -> ba/file.txt `-- foobar now, let's say i move the file.txt from ba to foobar: me@local: mv ba/file.txt ...
5
votes
2answers
446 views

Cannot mount second drive at “/”

I have a second drive that I want to be mounted at the root. The drive contains the following folders: /home /shared I want those two folders to be accessible at "/". I can mount the drive at ...
5
votes
3answers
867 views

How to check which filesystem current kernel supports?

I would like to know if it's possible to check which filesystems my kernel supports. (like btrfs, raiserfs, exfat, ...). Man mount shows many options, but it's not really possible to use all
5
votes
6answers
26k views

How to partition my hard drive for Ubuntu use?

Till now I was windows user. From now on I want to use only Linux. I have 500Gb HDD. How do I partition it properly? I read that there is no right or wrong way, but still, I am confused. I did ...
5
votes
3answers
2k views

Which union filesystem is best supported?

I'm interested in knowing the answer to this unanswered question from the Ubuntu Forums: I am trying to get one folder to display the content of two other folders. ... I am a bit troubled by ...
5
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1answer
4k views

What is the best way to partition, and what is the best file-system for a new Hard Disk? [duplicate]

Possible Duplicate: What's your recommendation on drive partitioning schemes for a desktop and home server? Is Btrfs in Maverick considered stable? Bonus: What is the "best" filesystem ...
5
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5answers
3k views

Integration of a tag based file system approach in Gnome and Nautilus

I am using Gnome 3.8 and Nautilus and I am quite satisfied in principle. Yet I dislike the traditional hierarchical file system approach using paths. It may be me but I often cannot find the files I ...
5
votes
1answer
7k views

What is the default permission for /var/www?

After upgrading to 12.04, I had to reinstall the LAMP stack. Then I brought all my www project folders from a pen drive to the /var/www folder (using sudo nautilus, and dragging the files in there). ...
5
votes
1answer
271 views

How to combine similarly structured directories?

I have two directories that look like this: /folder1/sub1/file1.txt /folder1/sub1/file2.txt /folder1/sub2/file1.txt /folder1/sub2/file2.txt /folder2/sub1/file3.txt /folder2/sub1/file4.txt ...
5
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6answers
729 views

Search files by name instantly

Under Windows there is a smart software "Everything" listening to changes in NTFS that allows it to search files by names instantly - for a second or less. Is there such ability for Ubuntu?