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 are directories created with permissions 2070 and files with 060 in a directory with setgid bit?

I have the following directory: $ ll -d neptune drwxrws---+ 5 beamin psych 4096 Mar 7 16:18 neptune $ getfacl neptune # file: neptune # owner: beamin # group: psych # flags: -s- user::rwx ...
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2answers
278 views

change owner of a file and it's parent directories

I have a file that has 10 parent directories. When I change the file's owner with chown command new owner still can't write to file because the file's parent directories still have a different owner. ...
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2answers
15k views

Unable to delete file, even as root

I've got a file on remote machine (saying that, cause I don't know who the heck created it), that I've to remove. user@machine:~/folder$ ls lift_proto.db.lock.db And permissions are like this: ...
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1answer
660 views

403 forbidden issue - .htaccess

I am getting 'Forbidden' 403 problem with my website. Earlier today it worked. The only thing I did was try to access other folders (eg bin). I checked permissions, and it all seems to be looking ...
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3answers
8k views

Run sudo as another non-root user and save in this user's home directory

I added a new group: ircuser and a new user: ircuser In visudo I placed this line: myuser localhost=(ircuser) NOPASSWD: /usr/bin/irssi Created ircuser directory, where config files, caches, etc ...
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1answer
1k views

Mount drive from redhat to a windows share with CIFS

I have been trying to mount a drive, but anything i do i get 'Access Denied', I tried: mount -t cifs //192.168.x.x/m -o username=user,password=mypass /mnt/mymount mount -t cifs //192.168.x.x/m -o ...
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1answer
258 views

Help with a php web program running a shell script?

I'm a sys admin as well as web developer at my job. I have a php program that prompts the user for a number of parameters which then using those parameters must execute a batch shell script. I've ...
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2answers
1k views

Allow non-root process to access all home directories without compromising security?

Any ideas how to allow one non-root process to access (read&write) all home directories without compromising security? Normal users should not have access to each other's home directories. All ...
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2answers
2k views

Tar overwrites read only files

I created directory test, created file 1.txt in test, wrote 'Before' in this file. Then I went cd .. and used the command: tar -cvzf ./test.tgz ./test Then I entered the test dir again. Opened ...
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2answers
3k views

do not allow a directory to be deleted but make new files in it?

The question in my assignment says this: create a directory temp with all permissions for everybody, that cannot be deleted and copy hello.sh in this directory giving execution rights for ...
4
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2answers
195 views

System files with strict permissions

Usually, when we run ls -l we can see such picture -rwx...- so the owner always has the full stack of permissions. And usually the owner of the system files is the root. Are there any system files ...
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1answer
178 views

Permissions UMASK for New Directories

I have a directory "dir1" who's owner is "owner1" and it has 775 permissions. Another user in the same group as "owner1" is called "owner2" Whenever a file is written to "dir1" by "owner2" I need ...
4
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1answer
443 views

How do I stop Apache from running as root?

New on the job, small place, and the security stuff just landed on my desk. I was hired to be a front-end developer. Happy to learn new things, but never had to do sysadmin stuff before. I started ...
9
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1answer
359 views

Make group permissions same as user permissions

I want to set the group permissions for all files and subdirectories within a certain parent directory to whatever the user permission setting for that specific file or directory is. For example, ...
3
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2answers
549 views

How to change file permissions for newly generated files in largefiles directory of Mercurial?

I got some Mercurial repositories which are served by Apache over HTTP. But there is a dedicated user performing some automated tests, which needs to check out the repositories locally. Recently this ...
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3answers
4k views

find files which have a higher permission than xxx

I want to find all files which have a higher permission than e.g. 640. Perhaps this would work with a find and exec command. But my knowledge isn't sufficient for such a task.
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2answers
50 views

Translating user id when creating image

I want to create an image (for example ext3 image) from a given directory hierarchy. This directory hierarchy is owned by a given user. But on the final image, I want the files to be owned by ...
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1answer
137 views

transfer permissions user -> group/other

How do I transfer write/execute and execute permissions from owner to group and other, respectively? I have some libraries I want to move to opt and set ownership of to root. Unfortunately, ...
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3answers
3k views

permission denied when redirecting sudo sed output [duplicate]

Possible Duplicate: Redirecting stdout to a file you don't have write permission on I'm trying to install drupal according to the instructions given in this tutorial: ...
2
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1answer
4k views

Denied permission to change ownership

I am trying to change the ownership of a folder and all its contents to www-data, but am being denied permission to change it. I am root. and I've tried using sudo but nothing works. ...
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1answer
1k views

Permission Denied when downloading Drupal

/var/www$ wget http://ftp.drupal.org/files/projects/drupal-7.0.tar.gz This results in: --2012-02-08 21:20:17-- http://ftp.drupal.org/files/projects/drupal-7.0.tar.gz Resolving ...
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3answers
2k views

Frustrating issue where neither cron nor su -c runs my job (permissions?)

Updated (and snipped) with more details below. I've set up a cron script and I'm trying to debug why it's not running. [Snipped context testing, which is all ok; see revision 2 for details] The ...
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3answers
2k views

In Mac OS X Snow Leopard, how can one file's permissions be matched to another?

I need to make the permissions of a file exactly match the permissions of another file in OS X 10.6. I don't see 'getfacl' or 'setfacl' as suggested in some other posts for Linux. And, it doesn't ...
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1answer
4k views

mv file without write permission to the source file

I just realised that I can move a file that I do not own and don't have write permissions on. I have write permissions to the directory, so I am guessing that is why I could move it, but in this ...
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4answers
703 views

How can I move the entire OS to a different server?

I want to install RhodeCode on a test server at work. However, the internet access is restricted for that server, and RhodeCode has a lot of dependencies (I don't even have Python on that server). So ...
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2answers
13k views

Mount device with r/w access to specific user

How can I mount some device with read-write access to specific user?
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1answer
92 views

Restrict local website to selected users

Suppose I have two local websites under /var/www/mysite1 and /var/www/mysite2 via apache I can access them via localhost/mysite1 and localhost/mysite2. The pages are for local use only and I have ...
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1answer
14k views

Unable to delete file, even when running as root

I am in the process of migrating a machine from RHEL 4 to 5. Rather than actually do an upgrade we have created a new VM (both machines are in a cloud) and I am in the process of copying across data ...
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2answers
4k views

Group member cannot write even with write permission

The logged in user is a member of a group that has a write permission on a folder. But when this user is trying to write something, "permission is denied". The log below summarizes the question: ...
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1answer
688 views

Linux Mint system settings locked

The system settings for my Linux Mint OS, for example desktop background or mouse speed or screen resolution etc. won't change, for some reason. I just restarted my computer and for some reason the ...
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3answers
3k views

Why can't I run programs on another partition in Linux?

So for convenience, I store all my data on my Windows partition so that I can access my data easily from both Linux and Windows. However, I tried compiling a C++ program with g++, and found out that I ...
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2answers
2k views

Using umask to set group permissions

A long time ago an old friend showed me a way to use an octal or hex umask with a group I think using /etc/profile. I'm not sure. I'm trying to create group on Debian so that every member of that ...
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3answers
215 views

Permissions for a submission script

I'm a TA for an introductory Python programming class (all work is done from the terminal), and I'm writing a project submission script. Ideally I want a directory setup like this: submissions/ ...
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2answers
2k views

.sh file cannot be executed without explicitly calling sh

This problem has bugged me so much and I can't find a solution. Sorry in advance if it is a newbie question. Let's say I have a file called run.sh that contains: #! /bin/sh -x x-www-browser ...
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2answers
783 views

How to detect and stop user from deleting particular file on Linux?

Is it possible to monitor user actions on the file system and prevent him from performing particular actions? Can inotify only monitor actions on the file system? What about fanotify? There's very ...
5
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1answer
249 views

suid-root doesn't have effect

A program from apue. #include "apue.h" #include <fcntl.h> int main(int argc, char *argv[]) { if(argc!=2) err_quit("usage: a.out <pathname>"); if(access(argv[1], ...
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2answers
614 views

How to make a folder request root password to view execute?

I am running Ubuntu 10.04 LTS. I want to use my laptop to play music in a party. MY screensaver does not need a password to deactivate. I would like to allow people to use my computer to play the ...
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2answers
922 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?
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1answer
623 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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2answers
84 views

How can I install programming tools in the root directory so that they can be used by non-admin users?

I'm running OS X and for security reasons my main account does not have admin privileges. How can I install development tools in the root directory so that they can be used by all users? If this can't ...
2
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1answer
2k views

NAS box mounted via CIFS - problem with permissions

I'm running the latest version of Ubuntu, and have mounted a SMB share via a line in rc.local. The share mounts correctly, and I can browse files freely, create new files, and then delete them ...
1
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1answer
259 views

permission and user/group of a program executed through a script

I am curious, in the following scenario, what kind of permission does a shell script or Java program has (owner/group/other)? There is a script called run.sh, and it in turn calls a Java program ...
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1answer
77 views

Changing permissions

In the fedora docs they refer to owner and group owner as if both are owners of the file. The leads me to think that any member of a group which tries to change permissions of a file owned by that ...
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1answer
820 views

Create / Edit files in specific folder using different user / group

I want to know if the following scenario is possible. I am a user called www-admin and I am in the group www-admin. I am also a sudoer. I want to have all the files I create in the folder ...
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2answers
909 views

Setting up Apache 2 Local Development Environment & Permissions

I frequently find myself encountering problems (usually permissions) when trying to setup a local development server. Or creating a new site (alias). Very common problem is I need to allow www-data ...
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2answers
195 views

is setting a 0 permission on a directory an effective way to protect its contents?

Let's say that permissions for user and group are set up correctly on a directory. Would a 0 permission for other on that directory provide effective access control for the directory's files and ...
2
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2answers
693 views

Can I share a folder inside my home directory with another user?

Can I share a folder inside my home directory with another user? I have two users on a system, agent and daemon. An external server connects as agent and rsyncs files to ~agent/incoming I want ...
27
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3answers
19k 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?
2
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1answer
474 views

Why can I copy files to, but not create files in, this directory? [duplicate]

Possible Duplicate: Redirecting stdout to a file you don't have write permission on I'm trying to create an md5sum for an ISO image created with the Ubuntu Customization Kit tools. The ...
11
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2answers
7k views

Uppercase S in permissions of a folder

What does the letter S mean below? The file in question is a folder.                                     ...