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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Why ssh-agent group ownership is not root

Trying to understand why ssh-agent has sgid bit and found this post ssh-agent has sgid I have another question, why the group ownership of ssh-agent is nobody not root? What is the reason behind it? ...
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1answer
1k views

View List of Sudoers with No Sudo Priviledges

If I'm not a sudoer, is it possible to view the list sudoers? Does /etc/group show this information?
6
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2answers
316 views

Why do some applications stop working when permissions are changed in /usr/bin?

On OS X, a friend of mine changed the permissions on /usr/bin recursively using Finder, in order to grand write access to everyone. Here is how it's done: Go to /usr/bin in Finder, then mess with ...
3
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1answer
85 views

How to ignore -ls errors in find

I'm writing a find command to look for files or folders with broken permissions (files should be rw, directories rwx) and trying to ls -l (give or take) the results. The following find command looks ...
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1answer
48 views

Is it viable to have a file with 700 permissions?

I have been wondering about the following thing: Consider Pc A. Pc A has n users. There is a folder with one file per user. There is some sensitive information for each usere there, so you don't ...
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2answers
120 views

777'd some files. How do I repair SSH?

So I'm messing around on a test server and accidentally ran the following (which resulting in SSH breaking): # chmod -R 777 /var Because it's a test server, I'd rather not re-install right now, I ...
2
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2answers
239 views

How to give Windows partions' file execute permission

I have installed Linux Mint 17 and Windows 8, as dual boot. 500GB hard disk has 5 partitions. Two of them are NTFS and the other 3 are ext4 partitions. When I log into Windows, I can not see any ...
2
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1answer
66 views

Copy file from USB drive to a desktop loaded via a LiveCD

I have booted my computer using a LiveCD and want to copy a file from a USB drive to the LiveCD loaded desktop. I want to copy a file from the USB drive to the desktop environment in memory, which ...
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3answers
2k views

What are the world writable directories by default?

In a standard Linux filesystem, which of these common directories are world-writable by default? /tmp /etc /var /proc /bin /boot /.... .... Why are they world-writable? Does that pose ...
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0answers
68 views

Limit program execution to a list of arguments

I would like that my Unix users can only run a specific command insecurecommand with a controlled list of arguments stored in a file. The only solution I have found at this time is to : Create a ...
4
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3answers
400 views

Why does file ownership matter within an RPM or DEB package?

Context: I'm trying to convert a .deb package to .rpm using alien, I use this command: $ alien -r foo.deb but it complains thusly: > Warning: alien is not running as root! > Warning: ...
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0answers
94 views

No elevated permissions when using GUI applications on i3 wm

I'm running Lubuntu 13.10 with the i3 window manager. Tasks that need elevated permissions, like installing applications from the lubuntu software center or using the gnome-disks, complain about not ...
5
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1answer
608 views

Give user permission to rm without password or sudo

I'm trying to give the ubuntu user on my machine the ability to rm folders and files (mainly in the /www/ folder) without the need to invoke a password or the need to use sudo. I've been following ...
3
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1answer
52 views

Can't create a+r file

Using Debian I am unable to create files that by default has read permission for all users. For example: # umask 0002 # touch test # ls -l test -rw-rw----+ 1 user user 0 Jun 25 18:18 test Is there ...
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2answers
95 views

Permissions under a 700 (rwx------) directory

If a directory /foo/bar/baz has 700 (rwx------) for its permissions, thereby making it inaccessible to all but its owner (and the superuser), does it matter what the "group" and "other" permissions ...
0
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1answer
148 views

Git / Jenkins permission problem

OS: Ubuntu server 10.04 LTS I have a strange issue going on with permissions and can't seem to track down what is causing it. The setup is as follows: Git Repository folders (and files in them) are ...
2
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1answer
194 views

Why can't I chmod these files that I could earlier?

I was trying to add execute permissions to sh files in a folder. For that I mistakenly used: find . -print0 -iname '*.sh' | xargs -0 chmod -v 744 and the output was : mode of `.' changed from 0755 ...
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4answers
376 views

Issue on created folder permissions: temporary flag

I have a strange issue with directory permissions. From within a C++ app, I create a folder with: mkdir( "foldername", 777 ); But I got into an issue when attempting to create a file in that ...
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1answer
2k views

Give read-only access to specific folders?

I would like to give read-only access to a user but I want him/her to see only the exact folders I give access. for example he/she shouldn't travel around all the server and browse to all users ...
2
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1answer
289 views

How can I create files in my home directory without root?

I created a user, then using root I created a folder for him. The folder has the same name as the user. When I am logged in as the user, I cannot create files or edit existing ones without using ...
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0answers
16 views

Directory permissions for read/write children [duplicate]

I'm configuring some folders on my machine so that only the jacko user can read/write to the directories. While I'm not so prone to get confused on file permissions, I'm having a mental block as to ...
2
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0answers
67 views

Easiest way to sandbox an user

I'd like to sandbox a user so that they can only read files under /media/shared/somefolder. What's the easiest way to accomplish this? Users/groups? ACL? AppArmor? Some context: Plex Media Server is ...
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0answers
34 views

Traffic Control user permission

My users need to emulate packet loss on RTP video streams to achieve visual effects. We are in a artistic environment and don't worry about security. The application works only as super user. I ...
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0answers
454 views

checking sendmail status as NON root user

I am in the process of converting to CentOS 6.5 from 5.5 and need a way to check if sendmail is on or not. For reasons I don't want to go through, I need to be able to check if sendmail is ON as a ...
2
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1answer
70 views

How do I limit local user file system access? What is the best method?

I have a Linux installation with a default user and an admin user (and root). On startup, the default user is automatically logged in and a particular application is launched. My intention is to ...
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1answer
95 views

Minimum file permissions to delete a file [duplicate]

To delete a file in Linux: What minimal permissions do we need to set on it? What minimal permissions do we need to set on its parent directory?
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3answers
385 views

User permissions problem Linux

Every time I create a new file from "eclipse", I need to run these two lines of code to get the r/w permission: chmod -R 775 /var/www/folder/filename.extension And/Or sudo chown -R ...
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1answer
148 views

Permissions changing on few files under /etc/

It appears that new permissions on /etc/issue and /etc/motd are reverting back to the original even if we change them. This is on systems running RHEL 5 and RHEL 6. Is there any rc script which ...
3
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1answer
286 views

Write-only permission for a directory doesn't allow to rename (move) files inside?

In fact, I would like to ask more general question -- "what does write permission for a directory allow you to do exactly?" -- but let's approach it with a concrete example. It is a long question, if ...
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1answer
440 views

How is file owner and group remembered for an external drive?

I formatted an external hard drive with an ext4 partition and subsequently mounted it. So that I could use the new partition, I did: sudo chown me:me /mount/directory to change the file owner and ...
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68 views

NFS, CIFS, and permissions

If you copy files from an NFS mount to a CIFS mount on a different server, will the permissions be retained? I am a little unclear how the file permissions work in these 2 filesystems. It seems like ...
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votes
1answer
20 views

Trying To Get Data From Server HDD

I had two CentOS 6.5 servers that I was running using the Plesk control panel. I have moved and decided not to use them no more but just buy my hosting. My new ISP blocks port 80 and the cost is ...
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2answers
254 views

/etc/init.d permissions issue

We are trying to harden our Linux Redhat 5 servers and one of the findings is for the /etc/init.d. The security finding is requiring that we chmod it to 700 or more restrictive. Please see the ...
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0answers
273 views

Java plugin not working with FireFox 24.3.0 on Red Hat Enterprise Linux 5.10

In the about:plugin tab, there is not Java plugin. I have created the symbolic link as suggested. The output of the 'ls -al' command is: lrwxrwxrwx 1 shehab shehab 58 Jun 4 11:21 libnpjp2.so -> ...
3
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1answer
3k views

Vim Error E138: Can't write viminfo file $HOME/.viminfo!

I'm afraid I've run into something rather strange. When I open a file normally, vim README.txt, everything is fine. But upon sudo vim README.txt, the file renders blank, and gives me a E138: Can't ...
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3answers
248 views

File permissions

I have a PHP script running which makes symlinks. To confirm which user it is: file_put_contents("testFile", "test"); $user = fileowner("testFile"); unlink("testFile"); echo "running as user '" . ...
4
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2answers
167 views

Precedence of user and group owner in file permissions

I just ran into something unexpected (for me) regarding file permissions on Linux (Arch Linux). Basically I have: userX in groupX fileX userX:groupX ---rwx---- What puzzles me: I cannot perform ...
3
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2answers
171 views

Solaris - Inheriting by files the user's ownership of directory

I have a directory with ownersip like user:group. I want to make on it something like sgid, but for user - all of new created files have a directory ownership. For example: drwxrwx--- 2 user group ...
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1answer
156 views

Changing permission from read only in linux?

I am trying to get the automatic brightness bug fixed in Linux Mint 17 based on the new Ubuntu release. In order to do this i had to create a file named 20-intel.conf in location ...
4
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1answer
194 views

chmod doesn't work on folder 'd — — ---' permissions

In /var/www I've got a folder: d--------- 2 www-data www-data 4096 May 20 2012 update reported by ls -la. I'm logged in as root, but I can't change permissions or ownership. chown and chmod ...
5
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2answers
137 views

How to backup dir structure ignoring files & dirs without read permission

Any ideas how to back up a directory structure for which there are some files and/or directories for which you do not have permission to read? I'd like to just ignore those, without backup (tar? jar?) ...
1
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1answer
143 views

How does one make a backup of system-connections on to a USB flash/thumb drive?

I am using Debian Wheezy. I would like to back up system-connections (full path is /etc/NetworkManager/system-connections) on to a USB stick which has been formatted with FAT32. The folder ...
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0answers
28 views

Changing pasword 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 ...
4
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1answer
148 views

How can I run growisofs via sudo?

Whenever I've attempted to run growisofs via sudo I've always gotten the following error message. $ sudo -i growisofs :-( growisofs is being executed under sudo, aborting! See NOTES paragraph in ...
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2answers
199 views

Installing `setfacl` on Cent OS 6

My apologies if this is the wrong Stack Exchange for this sort of question — it seems like the most appropriate. Which yum package should I install to get the setfacl command on my linux virtual ...
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1answer
354 views

How to change permissions/owner or delete Downloads folder (owner: root wheel)?

Something strange happened with my Downloads directory on my Mac OSX v 10.7.5. All of a sudden I wasn't permitted to save anything to the directory. The directory is in users/kelly/ and is the only ...
5
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1answer
2k views

setfacl: Are these two commands the same?

I have a deployment script (based on capifony) that sets te permissions on specific servers for a Symfony2 installation. It contains the following two commands to do this for several directories: ...
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5answers
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Is there a way in Linux to have one non root user check if another non root user has permissions to a folder / file?

The scenario is this - I have a command line program that might not run as root, part of the requirements is to warn if another user has write permissions to some folder / file e.g. I'm running as ...
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1answer
57 views

Execute scripts without decrypting them

I have a set of scripts (bash, ruby, python) and want to put everything into a container like file so I can deploy this container on a lot of servers. This scripts need to protect from accessing other ...
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3answers
75 views

“Other” permissions on files

To my understanding, the last three character of file permission printed by ls command is about other user's file permission. If the other user"s" have separate file permissions to this file, what ...