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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2answers
340 views
trouble with irssi and cifs
I'm having trouble getting irssi, the irc client, to write to a mounted cifs share. I have the uid, and gid set to my user as well as setting the permissions on the share to being very permissive. ...
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votes
1answer
24 views
disabling root permissions
From Linux From Scratch build a minimal system for running my application. but struck on disabling root permission.
Need my minimal lfs as ubuntu.
when ubuntu boots login-screen displays when we ...
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4answers
40 views
What type of permissions should a user's home directory and files have?
I'm working with a fresh install of Ubuntu 12.04 and I've just added a new user:
useradd -m testuser
I thought that the -m flag to create a home directory for users was pretty standard, but now ...
3
votes
2answers
62 views
How to run script with the privileges expected of the script's general “intended user”?
During the development of a script, some bugs remain "latent" until the script is run by a different user. (For example, the script may access a file that only the person developing the script has ...
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3answers
68 views
Setting file permissions in bash script
This script is not working the way I thought it would .I though it would find all the scripts that have every one rwx permissions changed to the permissions of xx5
#!/bin/bash
# the / makes find ...
2
votes
1answer
940 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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0answers
25 views
Xfce: Upgrade from Squeeze to Wheezy broke xfce's user policies
While using Debian squeeze, I was able to allow a user shutdown in xfce by adding users to the powerdev group (see here: xfce: Allow shutdown for non-root users).
Now, I upgraded my system to Debian ...
1
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2answers
227 views
SMB Mount To Windows Server Appears to Lock up. Any Ideas?
We are running CentOS 6.3 with all the latest updates. (Attempt to resolve this issue)
The Server I am trying to connect to is a Windows Server 2008 R2 box. Though this applies to our old SBS'03 Box ...
1
vote
1answer
94 views
How are default permissions determined (on OS X)?
My (limited) understanding of basic Unix is that any files that are created will be created based on the permissions of the creating user. In particular, the group assigned will be the creating user's ...
2
votes
2answers
53 views
Can I allow users to chmod a file not owned by them?
I would like to allow users to chmod a file that is owned by root or some user that is not themselves. I have chmod'ed the file to 777 and I get "operation not permitted". I have added the user to the ...
1
vote
1answer
29 views
Give default write permission to group to any newly created files and folders
Let's say that we have 2 users: a and b, that are both part of group general.
I would like that any file or folder that A creates, would have write permission to the group GENERAL.
How can I do it?
...
1
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0answers
25 views
vsftpd virtual user read permissions
I have a vsftp server that services a read-only public space by anonymous login. It works fine. I need to add a few specific users that will authenticate by username/password and they will have ...
1
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2answers
33 views
Is there any way for group “owners” to have full rights of a file or directory owner?
Is it possible with the normal Unix permissions system to enable group members to have the right to change a file's permissions?
In other words, suppose we have a file awesome.rb which is owned by ...
3
votes
1answer
60 views
ACL, ls, “permission denied” and a lot of questionmarks
I have two users, Alice and Bob. Bob should be allowed to list, ls, Alice's home directory. Alice also has a file in her home directory that Bob should also be allowed to read.
I run these commands ...
3
votes
1answer
1k views
How to handle network interfaces on crunchbang linux desktop?
I have installed crunchbang statler which is based on debian squeeze.
By default there is network-manager-gnome 0.8.1 (/usr/bin/nm-applet I believe) running with an icon near the clock/tray area.
I ...
13
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3answers
3k views
Why can't a normal user `chown` a file?
Why is the chown command root-only?
Why can't non-root users use chown to give away files they own?
7
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3answers
2k views
How to make a folder private?
I'm using Ubuntu with several users and I want to make folders viewable just for a specific user. Any idea how to do it?
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2answers
51 views
why am I able to delete file which belongs to `root` under a non-root user? [duplicate]
I create a file under my user esolve
and then su root
and use chown to change its user to root
then I returned to user esolve
I notice I can still delete the file with rm
why?
3
votes
2answers
272 views
File permissions when transferring to another server
If I was to chmod 777 blah.sh on server A and then move it to server B, would it retain the permissions, or would it default to some other permissions once it hit server B?
2
votes
1answer
3k views
Changing user and group ID system wide (including file system attributes)?
(this question possibly related to Linux: simulating/masking user ownership upon mount of 'external' partitions? - Stack Overflow)
I typically use Ubuntu (currently 11.04) as my desktop OS; let's say ...
16
votes
3answers
2k views
Clone ownership and permissions from another file?
Is there a command or flag to clone the user/group ownership and permissions on a file from another file? To make the perms and ownership exactly "like" that of another file?
2
votes
1answer
47 views
how to keep file owner same for newly created files
This question is regarding samba file access.
I have created a folder A, and under folder A created two folders B and C. And also created three users A, B and C.
User A has access to all three ...
2
votes
1answer
35 views
Adding a user to a group by default
I have a group that all users on the system share. The group name is common and it is to allow for a universal fileshare for everyone on the machine. How would I make it so that all new users are ...
0
votes
1answer
56 views
Setting permissions with FTP
I'm having some issues setting up permissions for FTP. Read another thread on here regarding it, but I wasn't sure if it really matched what I needed.
Essentially, right now I've got the client's FTP ...
2
votes
2answers
41 views
how to initialize `/etc/group`?
After editing /etc/group, How this update starts functioning without restarting the system in Unix?
Is there any command we need to run?
5
votes
2answers
6k views
File permission issues with shared folders under Virtual Box (Ubuntu Guest, Windows Host)
I am using Ubuntu on Virtual Box and I have a folder which is shared between the host (Windows) and the VM (Ubuntu). When I open any file in the share folder in Ubuntu, I can not change it as its ...
2
votes
2answers
64 views
files in /proc/$PID (e.g. ssh-agent, Chrome) are not owned by user but by root
I am just answering another question here :-) and thus had a look – wanted to have a look at /proc/$PID/fd of ssh-agent in order to find out which socket it uses. But I can't. I am quite surprised to ...
1
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0answers
51 views
samba 4 force user
I have a directory with files owned by Linux user quux. I want to give access to it over CIFS using Samba 4 for two persons so they have different usernames foo and bar and passwords but access the ...
1
vote
1answer
103 views
security concern around adding cron user to web application group
I have a permissions issue on my CentOS 5.6 machine with regards to the cron user.
On my test/staging environment my cron user (picco-cron) is a member of one group - picco-cron, as below:
...
2
votes
2answers
159 views
I can not remove folder from server
Accidentall I created the folder on remotely server (Server OS is Linux) using php: mkdir("folder_name",0);
Now I can not delete this folder from server. I think this is from permission, because 0 is ...
10
votes
4answers
2k views
Wrongly set chmod / 777. Problems?
I was trying to run chmod -R 777 ./ but ended up typing chmod -R 777 / and set 777 on my entire machine. What can go wrong? How can I fix it?
4
votes
2answers
861 views
Selinux is denying access to mysqld
I have a script that dumps a mysql database. It then compresses the file and this gets stored in my home folder by using cron. The problem is I seem to be getting an error message.
mysqldump: ...
1
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1answer
58 views
LAMP Server setup for personal development
I am setting up a LAMP server in VirtualBox for personal development. This will be an Ubuntu Server 12.04 install, and I will be using Virtual Hosts for Drupal, Yii, and other small PHP apps. Ideally ...
4
votes
4answers
2k views
Downsides of umask 077?
What are the cons, for having a restrictive umask of 077? A lot of distros (I believe all, except Red Hat? ) have a default umask of 022, configured in /etc/profile. This seems way too insecure for a ...
0
votes
0answers
32 views
Why can't users besides root create files in a samba share?
I am sharing a directory on one Red Hat machine via samba, and mounting it on another Red Hat machine with the following command:
mount -t cifs -o guest <remotepath> <localpath>
The ...
3
votes
2answers
169 views
Can AIDE scan a directory inside a directory the user doesn't have read permissions for?
I would like to use AIDE to help me verify the integrity of my home directory on a shared Linux system. I am not an administrator of this system. I have built and installed AIDE in my home directory ...
5
votes
1answer
378 views
Immutable bit on AIX?
Under Linux I can:
chattr +i SOMEFILE
so that even root can't modify the SOMEFILE. Are there any similar solutions for AIX?
2
votes
2answers
541 views
Limited SSH user on Ubuntu 12
I'm running Minecraft on a server. How can I give my friend SSH access just to the minecraft folder (a root folder), the screen command, and some ports?
47
votes
2answers
36k views
How to set default file permissions for all folders/files in a directory?
I want to set a folder such that anything created within it (directories, files) inherit default permissions and group.
Lets call the group "media". And also, the folders/files created within the ...
0
votes
1answer
49 views
LINUX: Permissions for files: Identify if it is a file or directory, and its access allowed to the world, user, and group [duplicate]
I am having trouble understanding permissions for directories and files in LINUX.
By examining permissions for each of the following files, identify if it is a file or directory, and describe the ...
1
vote
2answers
54 views
using root to mkdir in another users home directory
having a bit of a difficult time trying to create a folder under another user's /home/devuser1/pubic_html folder. I'm trying to avoid using sudo and looking for an alternative. The permissions on the ...
1
vote
3answers
86 views
Taking away a User's Read/Write/Execute Permission
So I have a user that is able to go in /etc and read files like httpd.conf.
I would like to deny that user access to any critical locations such as /etc, /var and so on.
What would be the best way ...
2
votes
2answers
87 views
Unable to change permissions of file system root
When I write ls -la the output is :
tusharmakkar08-Satellite-C660 tusharmakkar08 # ls -la
total 88
drwxr-x---+ 10 root root 4096 Apr 18 19:43 .
drwxr-xr-x 4 root root 4096 Mar 18 17:35 ..
...
5
votes
5answers
172 views
Changing Unix group for files
I have a file that a colleague and I are editing together, on a Unix system. We are using Unix group permissions to edit it. We have one Unix group that we are both members of. Whenever I save the ...
1
vote
3answers
76 views
`cp` permission denied when copy a file owned by `root`
I have a folder udp_folder2
d------r-T 41 root root 4096 Apr 26 21:17 udp_folder2
when I'm with user other than root, I can't cp -r it into a new folder
it says: Permission denied
...
1
vote
1answer
51 views
chmod allowing write when I am not setting it
I've got a perl script which systematically changes permissions. The first thing the script does is remove all permissions. It does this by calling chmod(from perl). I did this as I found the set guid ...
2
votes
2answers
79 views
Ubuntu Bash - Changing permissions to user files for automating Apache VirtualHost creation
Moved here from AskUbuntu
I currently have a small Ubuntu Server 12.04 machine (test environment) with about 3 non-root users created. Each user has their own public_html directory under their ...
1
vote
1answer
44 views
Properly Setting Red Hat Daemon Umask
I've been trying to figure out the proper location to set daemon umasks in RedHat 5. All my searches lead to setting it in /etc/init.d/functions or /etc/sysconfig/init.
What are the pros/cons of ...
2
votes
2answers
50 views
Permissions for FTP directory: Inherit directory owner
I am making multiple folders for users (userA/, userB/, etc.) where anyone can create/read a file/folder in any directory (userC can make fileX inside userA/). However, only the directory's owner can ...
3
votes
2answers
66 views
How can I backup a directory to NTFS while preserving Unix file attributes?
I want to make a backup of my home directory to an NTFS partition (an unfortunate limitation). However, when I last tried using just cp, the attributes (owner, etc) went away. How can I make a backup ...
