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

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1
vote
0answers
127 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 ...
61
votes
5answers
23k views
0
votes
1answer
176 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
98
votes
5answers
93k 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
26 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
22 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
269 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
3k 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
39 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
42 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
45 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
110 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
9k 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
80 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
118k 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
738 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
46 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
724 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
59 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
142 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
49 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
55 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 ...
0
votes
3answers
39 views

How to see the directories etc, bin, boot in the file system?

I am new to Ubuntu and I am unable to see the files in /etc, /bin and /boot. I want to know by using which command I can see them? I have tried logging in as root sudo -s and tree command but unable ...
3
votes
2answers
117 views

Are any files copied when I move files from a folder into another folder on the same disk?

Or is only the reference changed? It's a general question. Not really Ubuntu-specific. BTW: I've tried sudo fdisk -l, it doesn't seem to give the full picture.
1
vote
1answer
206 views

How to extract archive or change permissions when there are “read-only file system” errors?

I am using Ubuntu 14.04 and having a problem changing the file permission of a .zip file. I can neither extract it nor change file permissions. When I extract it by command unzip ...
1
vote
0answers
26 views

Reason of removing apt/dpkg/lock & apt/archives/lock

Is it possible to install multiple packages by deleting " Using apt & dpkg in the same time ". dpkg/lock & /archives/lock The Ubuntu Developers made it for reason "that you can not ...
1
vote
3answers
34 views

Re-allocate space to /usr

Pardon my newbee-ness, but when I look at my file system with df -h, I see how most of my space is in /dev/sda1. I'd like to add space to /usr, to install hadoop. I am confused about how to ...
0
votes
2answers
43 views

Do all the daemons indicated by configFiles/scripts/links in /etc/{init,init.d} start at the boot?

Are all the daemons (services) indicated by configuration-files/scripts/links in /etc/init/, /etc/init.d/ meant to start at the boot; so can I assume those directories being like start-up directory ...
0
votes
0answers
10 views

How to move the header files and binaries in FileSystem?

I have downloaded Imlib package in Home folder and perform the make there only. Now, my code where I am using #include "Imlib.h" is not able to find it. So how can I move the header files and binaries ...
2
votes
2answers
177 views

why is ext3 being used as disk format for most of linux and ubuntu and not other file systems [closed]

Can anyone explain why is ext4, ext3 or ext2 disk formats that have been used in Ubuntu as default and not others. Are there any advantages or disadvantages over other? If so, what?
1
vote
2answers
82 views

If linux can support NTFS file system then why cannot it be installed on same?

After learning basics of installation and types of file system, I found that Linux(Ubuntu) can open,create and delete file on an NTFS file system, where as windows can't even see ext series! so my ...
1
vote
1answer
94 views

What is dummy filesystem?

I tried df --help command to generate the man-page for help on df command and I am stucked with a unknown term Dummy filesystem This line in df manpage is where I get to know the term first time -a, ...
0
votes
0answers
31 views

How do I cat / rm a file called “-v”? [duplicate]

I have a file named -v: $ls -hl (...) drwxrwxr-x 2 segticfnd segticfnd 4096 Set 28 2012 Ubuntu One/ -rw-r--r-- 1 root root 180 Fev 12 11:53 -v drwxr-xr-x 5 segticfnd ...
0
votes
1answer
30 views

Use/See whole the flash memory space [closed]

When we bought a N Giga Byte flash memory, the free space that the OS provide for us, is less than N GigaBytes. For example, for a 2 GB flash memory, total space that we can use, is 1.86 GB. As far ...
0
votes
3answers
107 views

can ubuntu work with ntfs file system partitions?? i mean could it read and write its contents or not?

i am thinking of switching to ubuntu,,, here are some things that i am concerned about: does ubuntu supports the usage(read/write) of previous data (from windows formatted NTFS drives) or i have to ...
2
votes
1answer
519 views

Why is btrfs slower than ext4, and why would I want to use it in an ubuntu install? [closed]

At this time (August 2014); having been following the benchmarks for btrfs on Phoronix,(http://www.phoronix.com/scan.php?page=home) and have been seeing on the aggregate; slower performance than ext4; ...
0
votes
1answer
317 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 ...
28
votes
4answers
4k views

Importance of Swap Partition

What is the purpose of a swap partition? How do I know I have just enough swap partition? Not too much/little. My Ubuntu PC is used for typical stuff: Web (email, facebook, etc.) Some movies ...
1
vote
1answer
50 views

Uninstalling Window and using Ubuntu as the only OS [duplicate]

I do all my task in Ubuntu. How will I be able to remove the Windows8 using ubuntu? I don't want to see Windows8 name displayed in the grub menu. And I want Ubuntu to be started in the first hand ...
0
votes
0answers
51 views

After mounting an exFAT drive under linux I am now unable to mount in on my Mac

I used sudo apt-get install exfat-utils exfat-fuse to be able to mount an exFAT drive under linux. This worked perfectly. However, the partition is now not visible on my Mac anymore! Did the ...
3
votes
1answer
4k views

best ubuntu samba guide [closed]

after trying the official Ubuntu samba guide and failing, then a youtube video guide and failing to make samba work, I am asking all of you which one is best as there are so many to choose from. I ...
14
votes
9answers
18k views

How to hide a(n) (NTFS) partition from ubuntu

I need to hide an NTFS partition from listing in the nautilus. How can I achieve that? Is there any tool to do that? And how can I hide files in ubuntu (except . operator)
1
vote
1answer
117 views

Ubuntu installation - the attempt to mount a file system failed

When installing Ubuntu, right after partitioning, I get the following error: the attempt to mount a file system with type ntfs in SCSI1 (0,0,0), partition #4 (sda) at /windows failed. What does ...
6
votes
3answers
12k views

Read-only SD cards

I've got an IcyBox USB hub/card reader combo in my computer, running Ubuntu 12.10. It's got an issue with SD cards. It always mounts them read-only, regardless of the write-lock switch. This is ...
1
vote
1answer
187 views

ecryptfs mounts as read only

I did the following (http://haridas.in/how-to-put-encrypted-contents-on-cloud-storages.html), and after mounting, the mounted dir is read-only filesystem: I created two dirs: one to /home/user/dir1 ...
6
votes
2answers
22k views

filesystem types for partitions [closed]

I am going to dual-boot install Ubuntu1 10.04 on my laptop with Windows 7. I was wondering what filesystem types (such as ext2, ext3, ext4, ReiserFS and whatever might come into mind) are ...
0
votes
2answers
543 views

How to know where plugged device was mounted?

For example I have 3G modem. When I plug it in USB port it becomes /dev/ttyACM0. How can I see if device is really connected at all, what proper commands to see listings of connected devices (not ...