Short for "file system permissions" - access control based on user, group, or global access.

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17
votes
7answers
130k views

SSH Permission denied (publickey)

I have tried searching previous questions for answers to my question but all of the answers that have been suggested previously haven't worked for me. I am trying to connect to a linode (running ...
2
votes
2answers
65k views

500 OOPS: cannot change directory: /home/user/public_html, VSFTPD error

I setup VSFTPD on my Ubuntu server 12.04, it worked very good. Until I tried to change the permissions of the user so the user couldn't go in the / directory and only in the directories inside ...
7
votes
1answer
133 views

Kubuntu 14.04, K3B, burning group is missing / there's no burning group

I tried to burn a DVD with K3B (a data project) but have some problems. K3B does not detect an empty DVD. I burned a DVD using K3B like 3 days ago, and I did it with success. I don't know what ...
0
votes
0answers
24 views

Start Java process within a PHP application

Not sure if this is the right place to ask or should I ask on stackoverflow.com but I will try here first. I have a php web application and somewhere within this application I have a button. That ...
1
vote
2answers
397 views

cupsd using 100% CPU, creating large (80GB+) error_log

A few days ago I realized my Ubuntu machine wouldn't load after login. After some digging around on a liveCD I realized my HDD was at 100% capacity, so I deleted some large files and was able to log ...
1
vote
1answer
51 views

ftp> how to recursively search and change mode?

Sorry if that was a repeated question! all my search results leads to 'SSH' results... I'm asking about FTP, How can I recursively change mode from FTP using the terminal? Again: I'm using FTP, not ...
0
votes
0answers
19 views

ubuntu as vagrant vm: cannot chown to other users

I have a directory: /home/vagrant/flarum and I am trying to change the owner of the directory from root to vagrant. so I run this commond: sudo chown -R vagrant:vagrant /home/vagrant/flarum this ...
1
vote
0answers
42 views

sudo/root permission denied when attempting to copy file

I am trying to copy files from an external hard drive (NTFS) onto an internal drive (ext4). Almost all of the files were successfully copied, but some were not. If I navigate into the directory with ...
0
votes
0answers
76 views

Getting a `Permission denied` error from mount when trying to chroot to Arch Linux

I'm trying to chroot to Arch Linux on my 64-bit Ubuntu box by following the instructions listed here. Here are the steps I've taken so far: $ curl -sSLo archlinux.tar.gz ...
0
votes
0answers
21 views

MySQL Server shuts down after start

When I start the server, irrelevant if it is mysqld or mysqld_safe, it will suht down after a second, giving me 2 warnings like [Time] [PID] Can't create test file ...
0
votes
0answers
18 views

FTP server help

I have an FTP server. Whenever I create folders using any machine, I cannot write inside the folders. This occurs even if I try to copy an entire folder; the contents still cannot be written. I am ...
4
votes
1answer
79 views

Permission denied when changing swappiness

I'm trying to set my swappiness to a more reasonable value than 60, but I get errors: root@server1:~# sysctl vm.swappiness=10 sysctl: permission denied on key 'vm.swappiness' root@server1:~# swapoff ...
0
votes
1answer
11 views

777 permissions on NTFS-3G Windows mount

I'm trying to install a game from Steam on an external harddrive. I normally use this to mount my WD Elements external usb harddrive (windows share): sudo mount -t ntfs-3g /dev/sdb1 /media/elements/ ...
57
votes
4answers
48k views

Why doesn't `sudo cd /var/named` work?

I want to cd into /var/named but it gives me a permission denied error, and when I want to use sudo to do this I am not permitted. What is the technical reason for this, and is it possible to do this ...
0
votes
1answer
70 views

Ansible /SSH questions?

I am trying to understand something between SSH and ansible set on inventory. I am running a playbook deployment and whenever I set the inventory like that : [status] qastatus ...
0
votes
0answers
84 views

Trying to install and run Virtualbox on XFCE desktop Version 4.8 xubuntu/chromebook c710

I am trying to install VirtualBox (5.0.16) - I can get it to install - I setup a virtual machine, but every time I try to run it, I get: The VirtualBox Linux kernel driver (vboxdrv) is either not ...
1
vote
0answers
18 views

Can't move, delete or create folders on my USB storage device.

I have a psp memory sdhc 32gb connected to my Linux computer and can't do anything on them, I tried everything, i checked I have the right permissions, as I'm the administration user but when I try to ...
0
votes
0answers
17 views

accessing scanner through Ubuntu 15.10

I am learning about Ubuntu Linux and have converted a computer from Windows 7 to U. My scanning function is now gone (Brother MFC-J4310DW 3-in one). I have got the fax and printing okay, but it seems ...
1
vote
0answers
37 views

Shared Files are not collaborating (only coming as read only)

I have shared a folder and files inside (over a LAN network - Peer to peer). The permissions are for read and write for everyone. But whenever someone (from a different machine in the same network ) ...
0
votes
0answers
10 views

Backuped a site from CentOS to Ubuntu and suddenly the permissions changed

I'm kinda new to Linux. I backed up a Drupal 7 site from a CentOS server to my local host server on Ubuntu desktop 15.10... Suddenly it seems that the file permissions for several directories changed ...
1
vote
1answer
43 views

How to recover from chown on all the files? [duplicate]

I've just chowned all the computer. I wanted to chown a folder completely so I used the option -R. I forgot that I had used su root before and I was in the folder where everything is (/ isn't it ?) ...
0
votes
0answers
44 views

transmission-daemon missing all previous torrents

Ubuntu 14.04.4 LTS, transmission 2.92-0ubuntu0.15.04.1 Just started up an updated version of transmission, and replaced my old config file. Now all my old seeding torrents are gone. All the torrent ...
0
votes
0answers
27 views

Add linux ext4 data partition, migrate data, mount automatically

I'm a Linux Newbie, although I enough (albeit ancient) system level experience across various systems to understand how things work. I'm trying to set up my son's computer. It's an HP, pre-installed ...
0
votes
0answers
17 views

Permanent permissions change to /dev/vhost-net

I'm interested in making sure that /dev/vhost-net is read/writable by group vhost-net. I do this using chown + chmod. However, after every reboot (and in fact after every reset of the device), it ...
0
votes
1answer
24 views

Set 'niceness' Without Elevating Permissions On The Executed Program

A separate user has been created whose purpose is to execute a script that keeps a particular process running constantly on my server. This process needs to run at a higher priority requiring it to ...
0
votes
0answers
25 views

Having problem with Code::Blocks in ubuntu 14.04

When I run any of my programs in Code::Blocks in Ubuntu 14.04, I see an error:
0
votes
1answer
628 views

XRDP Logout works on 12.04m fails on 14.04

I am using XRDP service to remote into several machines. A machine running 12.04, I can remote into, and when I complete work I can logout, and it logs out just fine. For a machine running 14.04, I ...
0
votes
0answers
26 views

Newly created directories do not have rwx permissions for *others*

I am mounting a Network-attached storage (NAS) into my Ubuntu 14.04 for data storage. The fstab file has the following line: # <file system> <mount point> <type> <options> ...
2
votes
2answers
1k views

'cat': can't open file: Permission denied

I am trying to copy the whole / directory to some other location. When doing cp recursively, it fails on some files like:- / # ls -lrt /sys/module/nf_conntrack_ipv4/uevent --w------- 1 root ...
1
vote
1answer
33 views

sftp user can't see files, what is the right permission

I installed a Magento on /var/www/html and set all files in it owned by www-data and group www-data. Added a user to be a member of www-data and use that user on sftp. Directory is set with ...
0
votes
0answers
20 views

Added additional storage - now KVM VMs won't start or setup

I added 2TB of storage as /storage - this is from /dev/sdb1. One system I have has 2 VMs on it, when I try to start these, I get the following error: error: internal error: process exited while ...
0
votes
1answer
119 views

Bash script that needs root only runs when I type exit!

I have successfully made a bash script that needs root, permission, which I can run as root! But, the script only runs when I am using the terminal as root and if I type exit, it runs. When I type : ...
0
votes
0answers
9 views

Trying to add Movies folder on second HDD to Plex. Failing

I'm trying to set up plex with two hard drives. I have my computer configured with Ubuntu and all program files on a SSD, and a second big-ish HDD with a whole bunch of files on it, including all of ...
0
votes
1answer
15 views

What Permissions Are Used For Scripts On Startup?

If I create a rc.local job to execute a script @reboot. I am wondering at what point in the startup the script is executed, and what permission level the the job executes my script at? I have a ...
0
votes
0answers
13 views

Device has read-only permission

I have an mp3 player that out of a sudden went crazy. At first I could not delete, create a new folder or paste any folder in the mp3 directory. The permission was set to read only and when I tried to ...
0
votes
1answer
40 views

How to regain sudo permission when grub menu is unavailable?

I inadvertently failed to append myself to a group by using usermod -G group_name user_name instead of usermod -aG group_name user_name and now belong only to the group_name group. The problem is: I ...
0
votes
2answers
57 views

File sharing lost when upgrading to Ubuntu 14.04 from 12.04

Something strange happened when upgrading from 12.04 to 14.04. I have three partitions on a connected hard drive that were all shared in 12.04. After upgrading, I only have one shared. The other two ...
0
votes
0answers
41 views

ls: cannot access /var/lib/polkit-1/localauthority: Permission denied

I have permission problems in my system and /usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1 fails to start at login. /var/cache/man/ gets lost every reboot. And I get ls: cannot ...
0
votes
0answers
21 views

How can I give SublimeText write permission for /var/www? [duplicate]

It has only been a day since I installed Ubuntu on my computer and what I'm trying to do now is set up my personal local web development environment. Of course, in the future, I am going to properly ...
1
vote
1answer
3k views

Problems with permissions with squid3

I have been trying to get squid to work. I have a configuration for the cache to be created in the directory /var/cache/squid3/. However, I get this error when running squid with the "-z" tag (It is ...
20
votes
4answers
11k views

What if I accidentally run command “chmod -R” on system directories (/, /etc, …)

I accidently ran sudo chmod 755 -R / instead of sudo chmod 755 -R ./ I stopped it after few seconds, but now there is some problems such as sudo: must be setuid root How can I revert ...
1
vote
1answer
33 views

Completely delete SD card files partition/format

I'm having issues doing a legit format and partition of an SD card on Ubuntu I have plugged in. I've been using fdisk, mkfs, Disks, and GParted but they have all only 'done' the task and not deleted ...
0
votes
0answers
21 views

Can't download (specifically PDF) files 'due to permissions' when manualy selecting location in firefox

I have a problem downloading (pdf) files in Firefox when I choose where to place it. (it works fine in chrome) The reason I think its related to Ubuntu is because Firefox tells me its a problem with ...
0
votes
1answer
23 views

How can I make permanent permissions for a directory using chmod?

I want all the new files I create in the directory to have specific permissions, but whenever I create a new file in the directory, it gets the default system permissions even though I used chmod -R ...
0
votes
0answers
12 views

All files on mounted USB HDD owned by “preseed”

I have a USB hard disk drive. When I plug it in, I can browse the files on it via Nautilus as expected. But I cannot create new files or modify existing ones. All files and directories are for some ...
5
votes
1answer
39k views

external hard disk READ ONLY

I have got an external hard disk TOSHIBA 1TB USB 3, the permission is always READ ONLY. fdisk -l (output) : Disk /dev/sda: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders, ...
0
votes
1answer
27 views

could someone explain the outcome entries into a file? [duplicate]

I have read a really good answer explaining what -rwxr-xr-x 1 root root 523454 Aug 8 2014 name means. However, It did not explain the number before the root root. Also, could you explain what ...
14
votes
1answer
1k views

How is my internet browser able to write files into my “Downloads” file if the default permissions do not allow to “write”?

On the terminal, I used this command: stat Downloads It stated the permissions for my downloads folder were "drwxr-xr-x" Wouldn't this mean only the admin and owner would be able to edit the ...
0
votes
0answers
37 views

SSH permission denied from Linux Ubuntu to Windows using keys

I am a beginner in hadoop, and I am trying to set-up hadoop cluster in fully distribution mode. My master is windows and my slave machine is Linux running on VM. I have created SSH keys and in both ...
0
votes
0answers
37 views

Cannot access folders shared on the second hdd

I have two folders shared using samba. One folder is in /home/y directory on the ssd and the second one on the second hdd mounted as /media/y/hdd. I can access the first, but I've got the message ...