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

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8 views

Need assistance on understanding debugging MPICH executing on cluster

I am running into a few issues with the SSH and MPICH executing. From some previous questions that I asked, I was able to progress to a point where I executed the mpi_hello.c program. For reference, ...
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1answer
41 views

Accessing root files by logging in as normal user

After logging in as a root from a terminal, I can create new directories but I can neither see nor manually access them by mouse clicking when log in as normal user in GUI. I can only access them ...
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13 views

setting the proper permissions for a .php plugin to run

I'm trying to install a web based software, basically what I have to do is put the software directory in my website dir, then access www.my-website.com/softwaredir in the browser, which should ...
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1answer
39 views

Having Trouble Transferring file to a new folder

I get this message when I try moving a file to a new folder sudo mv bios.rom usr/share/higan/GameBoyAdvance.sys mv: cannot move 'bios.rom' to 'usr/share/higan/GameBoyAdvance.sys': no such file or ...
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1answer
41 views

Invalid user error using chown

I am running into an issue where when I type in sudo chown, I am recieving an invalid user error. I created a user called clusterUser using the GUI. In the root directory of the computer (/), I ...
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1answer
36 views

Gedit error for non sudo - undefined symbol: cairo_surface_set_device_scale (undefined symbol: cairo_surface_set_device_scale)

for some reason I am unable to run gedit as a normal user. I get the following error: heberto@heberto-XPS-13:~$ gedit gedit: symbol lookup error: /usr/lib/x86_64-linux-gnu/libgdk-3.so.0: undefined ...
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1answer
37 views

Wordpress with Owncloud

and it was working well. Then I installed wordpress and it worked well as well. However, I couldn't access owncloud anymore. I have owncloud installed at /var/www/owncloud and wordpress installed at ...
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34 views

Restrict SSH remote access to users home directory chroot

I am hosting a server, now is there a customer who needs SSH access to his home dir. /home/csgorental1 i can give him access to SSH but then he is able to see certain files on the server i don't want ...
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0answers
19 views

Extracted a zip to install exe but directory is locked and not found with ls -la

Quite new to Lin. Downloaded Visual Studio Code to extract its binaries and install. Got to files but one is a locked directory that I want to delete and I can't even find with sudo ls -la to later do ...
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16 views

Configure 16.04 to minimize the situatons that require a password

I have Ubuntu 16.04 running in Virtualbox on a Windows machine to use as a test server for web development. I will only use it for specific situations that differ from Windows, e.g. using cron. I ...
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35 views

Chroot into /var/www/ for sftp-only users

The setup i want: Sftp-only user has his own folder in /var/www/ where he can upload his own files but can't look into folders of other users. The best way would be if he is directly in his own ...
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2answers
45 views

sudo must be owned by uid 0 and have the setuid bit set: what does it mean? [duplicate]

sudo fdisk -l sudo: /usr/bin/sudo must be owned by uid 0 and have the setuid bit set How to access permission to sda ( Primary HDD )
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1answer
65 views

Wireshark does not show any interface to capture packets

I've installed Wireshark in Ubuntu 16.04 with the command: sudo apt-get install wireshark After program start, Start Capture and Stop Capture buttons are disabled. Even opening Capture Options ...
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1answer
23 views

Issue with dir is other-writeable but not sticky (blue text, green background on all directories)

Some background: Distro: Ubuntu 16.04 LTS Experience level: Not new to Linux, but not an expert. The issue: When working with SMART Tools to check an external USB drive, somehow I managed ...
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1answer
47 views

How to change access rights for /?

I accidentally changed access rights on / for my Ubuntu 16.04 using sudo chmod 466 /. I was supposed to change access rights for a file but instead I accidentally executed a chmod on / (root directory)...
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1answer
69 views

How to allow users to create and delete file(s) / folder(s), but not modify them?

I have created a group name "app-data" and a folder /db-data/archived-data/ I want members of app-data to have all rights on /db-data/ folder but I want the same group users have only create and ...
2
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5answers
77 views

Shell Script source file not saved

I saved a shell script in bin(created by me). When I run the program, to avoid ./ to run the script I need to copy the script to one of the directories specified by PATH variable. The bin directory ...
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1answer
22 views

Visudo - Change user without password doesn't work

I want a user to be able to change to another user without a password and any other root rights. I followed already a hint on http://apple.stackexchange.com/questions/82438/allow-sudo-to-another-user-...
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1answer
40 views

Activating Matlab from Command line and from Launcher [duplicate]

When I type Matlab (without sudo) on the command line for the shell, matlab properly opens. Then, on the left pane in Ubuntu 16.04, I tell Ubuntu to lock Matlab to launcher. However, when I try to ...
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1answer
29 views

Annoying access problem on /var/log/nginx

On my system (14.04), I'm not using www-data as the owner of nginx and php-fpm, using web instead. (for the curious: 1. because www-data is a ugly name, 2. for not using a user that everyone knows is ...
2
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1answer
45 views

LXD permission issues in Juju

I have recently updated to juju2.0-beta11 running on Ubuntu 16.04. I was using the previous release with success but I am having problems since the upgrade a few days ago. When I now try and run any ...
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1answer
23 views

Change Ubuntu Touch Nexus4 channel

When I try to change my Ubuntu touch channel on my dual boot Nexus4 to gain GPS advanced support, then first block being copied returns "Permission Denied" error. What am I missing? I am using the ...
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0answers
35 views

Shutting down causes SSH keys to not work

Information When I shutdown or reboot my Ubuntu Server(16.04), logging in via ssh returns: Permission denied (publickey). So far, the only way to fix this has been to reset the permissions of ssh ...
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0answers
53 views

lsattr: Permission denied While reading flags on directory

This question is risen from Undeletable directory in lost+found I have a directory which I cannot delete and it seems like the reason of that is wrong attrbiutes ('immutable' on that dir or 'append ...
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0answers
24 views

How to run netbeans 8.1 as root?

How to run netbeans IDE (Version 8.1) as root? I'm supposed to debug(do reversing) tcpdump source file(c file) I have gotten source code from tcpdump homepage tcpdump and I made New project with ...
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2answers
230 views

Undeletable directory in lost+found

How can I delete this directory? I did fsck and it has found some garbage, I looked through these files and there wasn't something important. So I've tried to delete the contents of /lost+found and ...
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0answers
19 views

Permission denied on www-data

I've read several threads and tried many things, but I gave up. I have an Amazon EC2 server with Ubuntu running Magento. I have the user ubuntu with which I connect through SFTP and modify files. I ...
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1answer
45 views

Installing NS2 under Ubuntu

I'm trying to install NS2 on Ubuntu 14.04. I followed the steps that are recommended and in this answer. But I'm still facing lots of errors. /home/smallko/ns-allinone-2.28/sgb/gb_io.w:576: undefined ...
3
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1answer
138 views

How to allow members of a group to read current and new files on a directory?

Members of the purchasing group should be able to read all the files in /data/sales. In addition, members must be able to read new files ever created in this directory. How am I going to get this done?...
3
votes
1answer
41 views

What permissions does freefilesync run on?

I have mounted a webdav folder using webdav as described here . For mounting this directory I use the following command: sudo mount -t davfs -o uid=bruni,gid=users https://serveraddress /home/bruni/...
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1answer
35 views

Apache is not working

I have Ubuntu Server 14.04.4 LTS. I have a virtual hosts on my server. My .conf file :- <VirtualHost *:80> # The ServerName directive sets the request scheme, hostname and port that # ...
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5answers
373 views

rm: cannot remove directory/: Permission denied

I made a directory , the name is "shadi" and I set this permission for it In this situation I have others permissions but why I can not delete the
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1answer
47 views

Unable to login with an SSH key

I am trying to login with an SSH key on Ubuntu but the problem is that, at login time, I am asked to enter the password instead of a passphrase key. I setup permission, generated a key multiple times, ...
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0answers
134 views

Synaptic Error: W: Can't drop privileges

I realize this has already been sort of asked, but the question I found was related to fonts rather than Synaptic in general. Every time I run anything in Synaptic, everything installs perfectly fine ...
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0answers
159 views

How to share Ubuntu 16.04 virtualbox guest folders?

I updated (fresh install) to 16.04 on my Ubuntu Virtual Machine, I am unable to get permission to access my share folder: share folder set to automount in virtualbox. account is a member of "vboxsf"....
3
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0answers
54 views

Trouble with USB Permissions/Ownership

I'm trying to use a USB drive (FAT32) on my laptop running Ubuntu 14.04, but the permissions are messed up and I don't understand them well enough to fix it. Running ls -l in /mnt shows drwxrwxrwx ...
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0answers
29 views

Problems with file/folder mode [duplicate]

I have a problem with a hard drive mounted on /media/data. This drive is mounted by means on the following command in the /etc/fstab file: /dev/sda7 /media/data ntfs user,nosuid,exec,nodev 0 0 ...
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1answer
63 views

Can't access Network Shared Folder

I want to share file from my laptop to PC throught router. Both computers are in the same network and they see each other. When I set up sharing on laptop with Ubuntu (with guest access and read/write ...
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0answers
23 views

Symlinks for Pictures, etc. foldes on Touch OTA11

I installed insync to sync GDrive and now want all the folders to sync - for this purpose I created symlink from ~/Pictures to ~/InSync/Google Photo but suddenly Gallery and Camera won't work anymore ...
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0answers
20 views

VirtualBox: same virtual machine in a shared folder result in file not accesible every time an user saves the state of the machine

I have created a shared folder in /Users/shared_folder. I have moved the virtual box files to that folder /Users/shared_folder/.VirtualBox VMs/ I have set the whole folder with all the permissions: ...
0
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1answer
49 views

Start up script - ubuntu16

I am trying to write a script which will run at startup. Issue is that I am trying to run this as root, on user login. Could someone advise me which is the best way here? I am on ubuntu-16, and I am ...
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2answers
68 views

Is it safe to revoke group other access to every directory in a file system?

I'm trying to secure an account on our server called ssh_user that is used purely for connecting via SSH to our server. Everyone on our team logs into this account via a PSK secured ssh connection ...
1
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1answer
26 views

How to change directory permission from read-write to read-only [duplicate]

I'm an elementary-os user and I recently installed XAMPP to practice PHP. At first, I had to give read-write permission to /opt/lampp/htdocs/, in order to create the project files. But ...
2
votes
0answers
35 views

login error in Ubuntu 16.04 with X authority problem

I've Installed Android Studio and wpscan metasploit and LAMP Stack server on my system. The next day when I've tried to login to my system I got that black loop page and backed to my login page. I'...
0
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2answers
24 views

Copying files to var/lib/tomcat7/webapps/ROOT

I have installed a web app in var/lib/tomcat7/webapps/ROOT that runs using tomcat7. When i check the file permissions,i see that they are owned by tomcat7 How can i copy a file inside ROOT and make ...
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0answers
28 views

Connection for controluser as defined in your configuration failed

I have been using LAMP on my system for a while now, i decided to change ownership of the lampp dir from root to my account, now i'm getting this control user problem that never existed before. I have ...
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1answer
22 views

Security - Apache's websites folder inside Home folder

Is it secure to change DocumentRoot path to some folder in user's Home directory? Or it's better to leave it be and using a shared group between your user and Apache server as you can see it in the ...
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1answer
85 views

/etc/dpkg/dpkg.cfg.d/multiarch: Permission denied [duplicate]

I have Ubuntu 14.04, and I'm trying to install wine:i386 to use PlayOnLinux, following this article. However, when I run: sudo echo "foreign-i386 architecture"> /etc/dpkg/dpkg.cfg.d/multiarch I ...
3
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1answer
45 views

process terminated with status 2 - How do I track the issue down?

looking for some troubleshooting suggestions... I have an application installed running as a service under my user account (yes, I should likely create its own account). Anyhow, every now and then ...
0
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2answers
111 views

How do I save php file in var/www/html when it shows error “Permission denied”? [duplicate]

I cannot save a php file in var/www/html and my computer shows error "Permission denied". How to change permission to save file here?