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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7
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741 views

Prevent a unix account from being able to SSH [duplicate]

Possible Duplicate: Disable direct login for normal users (like oracle) in linux but allow scp and sftp? I want to prevent a unix account from being able to be SSH'ed with, but it should ...
0
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1answer
242 views

Incompatible group permissions in Linux - Is it a bug? [duplicate]

Possible Duplicate: How to apply changes of newly added user groups without needing to reboot? I am on Ubuntu 11.04. I am creating another user and placing an existing user in the group of ...
1
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1answer
1k views

How to fix this mysql permission problem?

I'm trying like mad to get rails dbconsole to work (Rails 3.2.6, if that helps). The problem is that when I run the command, I get: gems/railties-3.2.6/lib/rails/commands/dbconsole.rb:81:in `exec': ...
1
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1answer
1k views

How to create an user only with SSH -access and easily-set-up .ssh -dir perms?

I often mess up when I manually set up the .ssh -dir, easy to forget some flag. I often need to create a new user and only allowing access with SSH, how can I do that? Basically, I want to stop doing ...
2
votes
2answers
783 views

How to set permissions what users can see (drives, folders) on opensuse 12.1?

I have a several users on one machine and its needed to specify which user can access (read & write) specified folders and/or mounted drives. First of all, one user shouldn't see a ...
0
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1answer
715 views

OSX : rmdir “permission denied” but directory removed

This is a question from a newbie trying to learn UNIX commands. I was trying to test the rmdir command by removing a test directory located in my Downloads directory. I have read and write rights on ...
5
votes
5answers
18k views

Device is Mounting as Read Only (Can Copy Files as Root)

I am attempting to mount my Amazon Kindle, 3rd Edition. It automounts correctly and when I run mount -l, I get the following output: /dev/sdg1 on /media/usb0 type vfat ...
1
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1answer
542 views

How does apache determine what directory to show from public_html?

I am using Ubuntu 12.04 and have configured apache to serve from ~/public_html. I am trying to serve some directory contents over http on LAN. When I did the following: ln -s ...
2
votes
2answers
1k views

execute bit on directories, but not files [duplicate]

Possible Duplicate: How to apply recursively chmod directories without affecting files? What is the command to apply execute permission for directories (for traversal), but leave the ...
4
votes
1answer
805 views

What is “raw mode in hex” from stat output?

When using GNU stat to probe the filesystem, there are a number of format sequences available for the --format/--printf arguments; this one in particular %f Raw mode in hex doesn't make much ...
4
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3answers
2k views

Recursively list files with file names, folder names and permission in CentOS

Is there anyway I can list files by typing a command in the shell which lists all the file names, folder names and their permissions in CentOS?
10
votes
4answers
51k views

VSFTPD, 553 Could not create file. - permissions?

I've set up VSFTPD on Amazon EC2, with the Amazon Linux AMI. I created a user and can now succesfully connect via ftp. However, if I try to upload something I get the error message "553 Could not ...
1
vote
3answers
986 views

LFS can't cd to lfs/source - permission denied

I'm trying to build a LFS using version 7.1. I've followed all of the steps up to 5.3 and now I'm stuck because I can't change to $LFS/sources - I get the message: bash: cd: /mnt/lfs/sources: ...
3
votes
1answer
6k views

How to change permissions of multiple files found with find command?

I have a directory with numerous files. Part of the files have the 755 permissions and the other part have 644 permissions. I'd like to convert the files with 755 permissions to 644. I have tried the ...
4
votes
2answers
2k views

/etc/crontab permissions

The /etc/crontab file has the permissions: -rw-r--r-- I understand that this file is for system cron jobs and other users should not have permission to modify it. The current permissions allows all ...
2
votes
1answer
785 views

using Set uid to run a root command from non-root user

Consider the following two files. summarize's executable UID bit has been set, so that another user belonging to another group can execute the summarize executable that uses the customers.dat file. ...
7
votes
3answers
8k views

bash: /dev/stderr: Permission denied

After upgrading to a new release version, my bash scripts start spitting errors: bash: /dev/stderr: Permission denied in previous versions Bash would internally recognize those file names (which is ...
1
vote
1answer
163 views

Shared partition permission management

I am willing to try a dual boot arch/lmde setup on my laptop next week, but I've ran into a problem: I want to have a shared data storage where my downloads, documents etc would reside and could be ...
2
votes
2answers
80 views

PHP file permissions for Development machine

I've just upgraded my development machine and have moved over a website I was working on. However, the permissions don't seem to have moved over properly. The dev machine is a Linux machine which runs ...
7
votes
3answers
6k views

Give user permissions to all files and folders

I want to have a user who has access to all the files and folders on the system. This is for the purpose of using RSYNC on a local machine to backup a remote machine. At the moment we are using the ...
2
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2answers
86 views

How can I set these permissions?

I was so sure of myself, I thought I knew about permissions. Until someone asked me this. Having these users: User Group ---- ----- juan juan pedro pedro maria maria jose jose miguel ...
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votes
2answers
4k views

Permissions/ownership of /usr/local/bin

From what I understand, the right place to put your own scripts is /usr/local/bin (for instance a script I use to back up some files). I notice that this folder is currently (by default) owned by ...
4
votes
2answers
962 views

How to set secure permissions for multiple users and multiple websites?

On a Gentoo 3.2.12 server with apache2+php, there are several websites running: /www /website1 /website2 ...etc The apache user should have read-only access to all the websites. There ...
2
votes
4answers
3k views

Why is the default umask value for useradd in openSuSE set to 022?

I recently built a very simple test environment with oepnSuSE. As I tried to configure a shared directory, wihtout using ACLs, but with SetGID on that directory instead for some reason, I noticed ...
17
votes
2answers
27k views

SSH and home directory permissions

It took me hours to solve this SSH problem with one of my class accounts on my school's servers. I couldn't ssh into one particular class account without entering my password, while passwordless ...
5
votes
2answers
3k views

If I change permissions on a tar file, will that apply to the files inside it?

I have a script that runs regularly via cron, that creates a tar.gz file for the purpose of backing up a directory. For reasons beyond my control, the only user who can execute the script via cron is ...
2
votes
1answer
413 views

Daemon file access denied while it shouldn't

I recently installed a new SSL certificate and then also decided to tighten security a bit by make the private key less readable. This caused a problem with exim. The certificate is now 640 with ...
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votes
4answers
5k views

Test effective permissions of file for user

Is it possible to test effective permissions of a file for a specific user? I normally do this by su user and then accessing the file, but I now want to test this on an user with no shell (i.e. a ...
1
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1answer
2k views

exclude commands from user's sudo permissions

Consider the following line in a /etc/sudoers file: username ALL=(ALL) ALL, !/usr/bin/passwd as far as I know, this allows user username to use sudo, unless he not uses /usr/bin/passwd. But ...
4
votes
1answer
2k views

NFS different uig/gid on hosts

Scenario: There are different mappings of UIDs and GIDs between hosts that would like to have NFS share. Is there workaround without changing number mapping on hosts ? Example: Is there a way to ...
5
votes
2answers
1k views

Protect files from `rm -f`

Much to my immediate chagrin, removing write permission from a file does not seem to protect it from rm -f: touch foo chmod a-w foo rm -f foo How can I protect a file from accidental deletion when ...
1
vote
2answers
2k views

How to configure sudoers to allow running sudo command under other group and user name?

How to configure sudoers to prevent having the Sorry, user ****** is not allowed to execute error message. Background For the purpose of testing how a python script under a less privileged user and ...
2
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0answers
598 views

proper permissions under HTTP root with Apache2 + FastCGI + Suexec

I currently have a setup which runs Apache2 + FastCGI PHP + Suexec. As an example, I'm using /mnt/data/www/vhosts/inflex.co.uk/htdocs as a DocRoot for one of my virtual hosts. I have a script ...
1
vote
4answers
945 views

grant permission in linux

I have a linux web server with 2 hard-drives. There are 2 users, one can access /home/user1 and the other user can access /home2/user2 I would like to grant user1 permissions to access /home2/users/ ...
1
vote
3answers
9k views

Giving PHP permission to write to files and folders

UPDATED FOR FURTHER CLARITY: According to http://expressionengine.com/user_guide/installation/installation.html, it says: For most Unix hosts the following is typical, but you may check with your ...
2
votes
4answers
931 views

Editing a file without overwrite permission

Is it possible to set permissions for file to keep it editable but without permission to overwrite? I mean possibility to edit the file with text editor, but denying any attempt to replace the file ...
2
votes
1answer
1k views

How do I restore default owner of files in /var/ directory? [duplicate]

Accidentally in /var/ directory I ran chown root . -R;chgrp root . -R. Now services like mysql don't start. Is there a way to restore default owner and groups? If there is no way, what is the default ...
2
votes
2answers
929 views

Search for file permisions other than 755

In AIX really, how can I search in several directories and those below it, for files that are not of the specific permissions of 755. So I want to search /path/to/, /path/to/mydir, ...
2
votes
2answers
2k views

Is it possible to enable execution of files from a cifs mount in bash?

I have a remote mount with cifs and it would seem there is no way to have bash execute scripts from that mount, is it possible to enable such execution? ls -lh ini* -rwxrwxr-x 1 alan 500 222 ...
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2answers
988 views

permission reporting on sudoers

I'm looking for a good, consistent and easy way to do a report of sudoers permissions for every user and group on the system. For users, I want the report to include permissions granted via group ...
2
votes
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 ...
5
votes
2answers
8k views

tail program output to file in Linux

I know we can use below format to redirect the screen output to a file: $ your_program > /tmp/output.txt However when I used below command, it says "-bash: /home/user/errors.txt: Permission ...
0
votes
1answer
1k views

Chmod u-x isn't changing anything and I have no idea why

I'm a user on a Debian machine. When I create a file in my home directory, the default permissions appear to be 700, even though umask returns 0022: eulerz@foo:~$ touch testing eulerz@foo:~$ ls -l ...
25
votes
6answers
12k views

Can a script be executable but not readable?

Is it possible to execute a script if there is no permission to read it? In root mode, I made a script and I want the other user to execute this script but not read it. I did chmod to forbid read and ...
3
votes
1answer
2k views

How do I make all current and future files in a directory readable by a certain group/user?

I have a "Drop Box" directory for students to submit assignments. Its permissions are set to "drwx-wx---" where all of the students belong to the group. This lets them write to but not read from the ...
5
votes
3answers
3k views

logrotate doesn't work for munin after last update on OpenSUSE 11.4

I'm using munin 1.4.5 on OpenSUSE 11.4. Lately logrotate was updated to fix some permission problems and after that complained with Mar 3 12:15:05 lucien logrotate: error: "/var/log/munin" has ...
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vote
1answer
148 views

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 ...
2
votes
2answers
292 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. ...
6
votes
2answers
16k 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: ...
2
votes
1answer
684 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 ...