Permissions are the unix way of controlling access to resources such as files, directories and devices and may be specified for an owner, group, or all users.

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893 views

How to give sftp access to sub-directory only not to parent

I want to give SFTP access to user tom for directory /var/www/html/my_project/. while I don't want to give any SFTP access to directory /var/www/html/. currently /var/www/html/my_project/ and ...
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0answers
6 views

When creating a copy of files for a development server, how should I handly differring Group and Owner IDs to allow for easy syncronizing? [on hold]

I am doing web development for a client, and have created a copy of all their files in a development area. This is a separate cpanel account, and I have copied the files across and maintained the same ...
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1answer
25 views

Migrating mounts with identical permissions not working

I have two mounts /mount1 and /mount2. I ran the command: rsync -azrt /mount1/* /mount2/ to clone everything from /mount1 to /mount2. I then altered the /etc/fstab (see below) to remove /mount1 ...
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1answer
40 views

Dealing With A System Which Is Not Letting To LogIn Due To Open Permissions [duplicate]

A colleague of mine told me that after he executed the below command, he's not able to login to the system. No user can login via ssh. Only normal users can login over physical console of the ...
3
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0answers
166 views

Unable to log into Cockpit server - could not set limit for 'nofile'

I have Cockpit installed on a Fedora 22 VPS that I use for educational purposes. I tried logging into Cockpit from my browser, but I was given a "Permission denied" message, despite using the correct ...
2
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1answer
31 views

No permissions?

Output of ls -l: drwxrwxrwx 16 btsync btsync 4096 Feb 25 15:41 documents I can cd into the folder no problems. Now: sudo chmod 776 documents I can no longer cd into the folder: bash: cd: ...
4
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1answer
1k views

What are the different ways to set file permissions etc on gnu/linux

On Unix, a long time back, I learned about chmod to set permissions, and to allow programs to gain privileges (using setuid, setgid). I have recently discovered some newer commands, on GNU/Linux: ...
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1answer
1k views

Can't write via FTP despite apparently correct permissions

I have the same problem no matter if I'm using pure-ftpd or vsftpd. In Debian Wheezy. The user can browse the directories in /var/www/foo, but when the file transfer is uploading I get '550 cannot ...
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1answer
782 views

Apache created files and its permissions for CentOS 6.x

In short, I have an authenticated HTTP-POST that: posts a jpg image (created as 666 apache:www) into /directory1 (777 ftpuser:www) creates /directory2 (created as 666 apache:www) in a 777 ...
3
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1answer
16 views

White-list certain binaries and scripts inside a noexec/nosuid mount?

Just like the question. Is it possible to white-list certain executables from a noexec mounted FS? for instance, mine looks like this: /dev/vg/lv on /tmp type ext4 (rw,noexec,nosuid)
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1answer
828 views

Samba share open for all to all

thanks for viewing at this question. I have a CentOS 6.5 server with a share that is and should be accessable for and from everyone. All content placed on that share should be accessable by everyone. ...
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0answers
43 views

Changing password for Debian live

I have a hooks file, in the hooks folder, that looks like this: echo "root:rootpw" | chpasswd echo "user:userpw" | chpasswd After boot, Debian asks for user and password. When I type user along ...
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1answer
2k views

Mongodb permissions error after changing data directory

I just installed mongodb version 3.0.3, on Ubuntu. I edited the conf file to change the default data directory to "/home/user/mongodb", and gave it the following permissions: drwxr-xr-x 4 mongodb ...
3
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1answer
181 views

How can I change the error messages for 'touch'?

Lets just have some typical usage of touch as expected: $ touch this $ sudo chown root this $ touch this touch: this: Permission denied Now what I want to do is change touch: this: Permission ...
3
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1answer
7k views

Can't start Tomcat on Ubuntu

I installed Tomcat on Ubuntu. Then I created a new user. Then did: liferay@web-svr:~/liferay-portal-6.1.1-ce-ga2/tomcat-7.0.27/bin$ chmod +x *.sh Afterwards, I added JAVA_HOME and PATH in bash like ...
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1answer
1k views

rsync “Permission denied” despite ownership

I just rsync'd a bunch of files, from a Windows box running cygwin sshd, to a CentOS 6.4 box. I ran rsync -e sshd... on CentOS to do this. Then I plugged in a USB drive on the CentOS box, formatted ...
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1answer
25 views

cd: permission denied: binutils-2.21.1

I'm following Tools Used in 6.828 to configure. $ sudo tar xjf binutils-2.21.1.tar.bz2 generate folder binutils-2.21.1 $ cd binutils-2.21.1 cd: permission denied: binutils-2.21.1 $ sudo cd ...
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0answers
16 views

Can't make SUID work [duplicate]

I have 2 users: root and usr345 in the system. SUID bit allows the users to execute a program with permissions of it's owner. I created a file: # touch /home/usr345/update-iptables.sh Contents: ...
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1answer
49 views

Getting “Permission denied” when trying to create a file despite correct permissions

I’m using Amazon Linux and running a script through a Jenkins job, including this line touch /usr/java/jboss/standalone/deployments/myproject.war.dodeploy which results in the error … touch: ...
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0answers
60 views

Read but not write access to a socket on Linux, what can one do with that?

On a server installation, I found sockets writable by group, but only readable by others. I assume that the latter has no effect, as my understanding was that write access is needed to be able to work ...
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1answer
45 views

Set sudo umask apart from the user calling it

The problem: I set my umask for my user to be 0077. Now I use sudo instead of su when I need super-user access, and the problem is that whenever I execute a software installation using sudo with ...
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2answers
10k views

What is nobody user and group?

On my server (Synology DS212) some files and folders have nobody nobody users and groups. What are the characteristics of this user and group? Who can write of read this file? How can I change it ? ...
4
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1answer
263 views

Permission errors even though permissions are wide open

I installed anaconda on our new VM and I can't list its contents. I can change my directory to .../anaconda/ but when I type ls -l I get: ls: cannot open directory .: Permission denied However, ...
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1answer
30 views

Ways to restrict remote user to only access a remote database

I want to be able to setup a remote user that can update a PostgreSQL database on a production server. I have two machines, one is a local server that I use as a command and control system, named ...
0
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1answer
18 views

Copy /home without root [duplicate]

I installed Xubuntu on a friend's PC and he understood, that is it greater than Windows 10. He has no practice with shell and dont want to use it! The PC is used by several people. He (the owner) is ...
4
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1answer
43 views

File permissions on Linux?

I am surprised that /mnt, /media or even /opt are not writable by myself on my own system (Linux-Ubuntu). Should I always use sudo for any action on these paths? Or would it be better to add myself ...
2
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1answer
19 views

File permissions while installing a python module

I would like to install sphinx-doc from the sources so I git clone the module then installed it with sudo python setup.py install. Using /usr/local/lib/python2.7/dist-packages/pytz-2016.4-py2.7.egg ...
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3answers
17k views

Is there any difference between mode value 0777 and 777

I saw a code change at work, where the mode values were changed from 777 to 0777 to make nfs setattr work. What is the difference in the 2 values?
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2answers
12 views

Shared, read-write, photo directory tree, for normal users

I.e. what I want is the Linux equivalent of Windows Public/Pictures. The problem is that Linux file manager Nautilus doesn't apply default ACLs when you move a file into a folder/directory (nor good ...
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0answers
28 views

gvfs and permissions on a remote external usb drive

I have transmission and deluge (trying to see if it's a problem with the app) and I'm having the same problem with both of them. When torrenting. I get an error " Operation not supported ...
2
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1answer
2k views

How can ubuntu/truecrypt be configured so users can mount volumes if-and-only-if they have proper permissions on the mount-point?

If I add the line: ALL= /usr/bin/truecrypt to the sudoers file this lets all users mount volumes at arbitrary mount-points. The problem is a user could create a truecrypt volume and then mount it at ...
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2answers
1k views

Cannot change ownership of folder owned by nobody

After a forced reboot a particular folder in my home directory is owned by nobody. I am trying to change that to root but I get the following chown: cannot read directory ‘databases/’: Permission ...
2
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2answers
1k views

Confused on file and directory permissions for Samba shares

I've been searching for while to try to understand the following mask/mode fields for creating files/folders in Samba shares: create mask force create mode directory mask force directory mode But ...
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3answers
1k views

Linux Permissions vsftpd

I have mybb installed and running in /var/www/forums. I have two users part of the www group, logan and www-data. I have the recursive permissions of forums directory set to: chmod -R 755 forums ...
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1answer
888 views

“You do not have the permissions necessary to view the contents of “Share on name.domain.com”.”

I am having some issues with Samba on my Fedora file share server. I've logged into as the vncuser below on the server itself and I can access the directory, however I get permission denied errors ...
3
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1answer
33 views

ACL not working on directories

For some reason when I create new file from Windows I can change the permissions just fine but when I create a folder it won't let me change the permissions, I get this error: A device attached to ...
0
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2answers
29 views

Issued chmod 666 * in home directory, permissions problems resulted with all files

I was attempting to give any regular user access to two folders that reside a few branches down in my home folder. I thought I was in the correct directory and typed out sudo chmod 666 *, but ...
2
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1answer
914 views

How can I get write access to my usb drives?

I have trouble writing to external drives. They are monuted automatically in Nautilus, but I can not copy anything there ('Paste' and 'create Folder' are just greyed out). Does Anyone have ideas what ...
3
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1answer
38 views

How to revoke access for a particular user?

How can I revoke all access (r,w,x) for a particular user to a file or directory tree (while still giving read permission to others)? Does setfacl with mask allow this ?
0
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1answer
17 views

usermod -a -G group user not work [duplicate]

I use Ubuntu 12.04. I am trying to add the user gefalko to the www-data group. I use root@xxx~# usermod -a -G www-data gefalko If I understand correctly, I should now see www-data in the output of ...
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2answers
36 views

writing into /opt/folder

I'm using gcsfuse with an app I am making to write files into /opt/storage that folder is owned by a specific user called lets say "hero" which is in a group called "hero" too: ls -al /opt: ...
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0answers
19 views

What does @ indicate in long file format? [duplicate]

NOTE: Don't know if this matters, but I'm running commands on OS X Terminal. What does the @ indicate about a file when it is listed in long format, ala: -rw-r--r--@ 1 <user> <group> ...
5
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2answers
278 views

Sed with inplace editing changes group ownership of file

I have shell (php) script that gets in touch with target file this way: inspects whether file and directory are writable with php 's is_writable() (I don't think that this is problem) does in-place ...
0
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1answer
42 views

How can I execute any command as a normal user without sudo?

Is it possible to assign the sticky bit to sudo in order to execute any command as a normal user? Let's suppose that we have the user test and then: test@test$ apt-get update But I don't wanna use ...
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41 views

Authentication required to edit Sudoers - User not listed

I made a small typo in my sudoers file, nothing a simple pkexec can't fix. The problem is that when I added my user with "adduser name" and added "name" to visudo, as well as the root and sudo ...
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0answers
52 views

Can't change the root password from single user mode

I have redhat 6.x version I am trying to change the passwd from single user mode but I get the following passwd root changing password for user root passwd: permission denied then I try to ...
3
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3answers
44 views

What are the conventional file permissions per filetype before umask is applied

I am looking for a list that specifies the conventional file permission of all the different file-types before the umask is applied. I read in man 1p touch that the default for a regular file is: ...
3
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2answers
81 views

Restrictive “group” permissions but open “world” permissions?

I understand that with Unix file permissions, there's "user", "group", and "world" octets. For the sake of this discussion, let's assume that setuid/sticky bits don't exist. Consider the following ...
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1answer
972 views

How to add sftp permission to user/client?

I am somewhat new to linux, so please bear with me... I'm on a new Centos 7 setup. So far I have logged in via ssh as root: added a new user gave user full permission via visudo added user to the ...
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2answers
59 views

touch: cannot touch ‘test’: Permission denied

I try crate file in directory but get touch: cannot touch ‘test’: Permission denied commands: [user@xxx api]$ ls -l total 184 ... drwxrwxr-x 2 root root 4096 2016-04-12 14:38 public .. ...