chmod changes the permissions of each given file according to mode, where mode describes the permissions to modify.

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Default filesystem permissions and access rights in 12.04?

I have for many years on Unix and Linux systems as default set filsystem permissions and access rights to read and write for user (i.e. myself), and only read permissions for group and others. In the ...
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votes
1answer
2k views

Automatically mounted NTFS (not in /etc/fstab) won't chmod

I have an NTFS partition so I can share with a dual-booted Windows installation. chmod doesn't do anything, nor issue a warning to indicate this. I want other (Ubuntu) users to have RW permissions on ...
9
votes
4answers
18k views

Permission denied on ~ even though owner listed as me

Somehow, I managed to chmod and chown my ~ into oblivion. When I attempt to login through the shell, I get bash: ~/.bashrc : Permission denied Even after (as root) I've run chown -hR nroach44 ...
2
votes
1answer
786 views

Are there consequences to running 'sudo chmod u+s /sbin/shutdown'

I want to do this so that gShutdown application can shutdown the system when I'm not there to enter a password. But I've read on forums that changing linux commands with chmod can cause problems in ...
0
votes
1answer
240 views

Is it possible for a directory to change permissions of the files that are added to it?

I have a directory and I want all files that are put in it to have the permissions of **5. In other words I want the permissions of the owner and group to stay the same but the permission to be read ...
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2answers
471 views

How can I change a set of files Permsissions from Root to user

I copied A set of BlueJ files from /usr/share/doc/BlueJ to a ~/BlueJ directory however the files in folders are set to root permission and read only I need to be able to read/write them. So in BlueJ ...
2
votes
4answers
601 views

How can I limit a user to access just his folder? Not able to view/cd into any other thing?

How do I limit a user to access just his folder? Suppose I don't want the user to be able to cd anywhere else, isit possible? Do I need to chmod the whole system?
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votes
1answer
861 views

How to make /var/www/html same as my /var/tmp directory?

I am using one software, who can save files to /var/tmp but not in /var/www/*.*. I did applied chmod -R 777 /var/www. But still it can write to /var/tmp but not /var/www How can I resolve this? (I ...
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2answers
2k views

Change folder permission

What permission should i apply to a folder so that everyone can see the hierarchy and all the files inside but they should not be able to read and write them. The folder can have multiple other ...
0
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1answer
1k views

“Permission denied” when starting binary despite “rwx” priviledge

I am trying to run the statistics software Stata 11 on Ubuntu 11.10. as a regular user and I get the following error message: bash: xstata: Permission denied The user priviledges seem ok to me as a ...
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votes
3answers
815 views

Messed up file permissions

Not being an expert in Linux/Ubuntu, I had to install from scratch today and messed up w/file permissions. The thing is that, when backing everything up before reinstalling, a couple of important ...
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votes
3answers
7k views

What are the default file permissions for the home folder?

I have somehow inadvertently altered the file permissions of my home directory. I wish to change them back to the default permissions. However, I can´t seem to find out what the default is. ...
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vote
1answer
2k views

Executable not running even after chmod'ing it

I am trying to run a BETA precompiled copy of rcracki, but the problem is when I try to run the executable, it gives an error: root@hosted-by:~/Desktop/rcracki_mt_0.7_beta2_linux_x86_64# ls COPYING ...
1
vote
2answers
766 views

How to access executable in a seperate partition? [duplicate]

Possible Duplicate: How to 'chmod' on an NTFS partition? I have just started using Ubuntu and I have my hard drive set up with an Ubuntu partition, a Windows 7 partition and a much ...
1
vote
2answers
3k views

Add user that can read / write a root, www-data files

How can I do that? I got user amira on my Ubuntu 11.4, I want him to able to see / read / write a root user files such as /etc/* and apache files
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votes
2answers
9k views

chmod files only in all subdirectories

Please someone assist me with chmod, I have the following file structure -dir1 --file1 --file2 --dir1a ---file1a1 ---file1a2 --dir1b ---file1b1 ---file1b2 How do I chmod 655 to all files under dir1 ...
11
votes
4answers
27k views

Changing permissions on serial port

I'm using the Arduino IDE in Ubuntu, and am having issues with the serial port. It has worked in the past, but for reasons that may be unnecesary, I felt the need to change the ownership of some of ...
1
vote
1answer
683 views

ddclient not working without sudo

When I run ddclient (DynamicDns Updator) without sudo, I get WARNING: file /etc/ddclient.conf: Cannot open file '/etc/ddclient.conf'. (Permission denied) stat() on closed filehandle FD at ...
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vote
2answers
368 views

How to recover from mistakenly chmod operation?

I screwed up all my files permissions under a directory, how can I recover. Especially, how to change the files that is non-executable back to read-write-only?What I did wrong was that I chmod all the ...
3
votes
3answers
8k views

Cannot write to Folder mounted with SSHFS

I just created a folder according to SSHFS (Ubuntu Docs) sudo apt-get install sshfs sudo gpasswd -a jm fuse sshfs -o idmap=user jm@example.com:/path/to/folder folder Then I found that the folder is ...
12
votes
1answer
5k views

Files are read-only after copying over samba

I used to copy files from one system to another system via samba. How ever I am getting the file only in read only mode. What i am doing now is i used to change the file permission after transferring ...
13
votes
4answers
6k views

What if I accidently run command “chmod - R” on system directories (/, /etc, …)

I accidently ran sudo chmod 755 -R / instead of sudo chmod 755 -R ./ I stopped it after few seconds, but now there is some problems such as sudo: must be setuid root How can I revert ...
2
votes
2answers
6k views

File permissions: why can't I list a directory?

I am able to list directories in a root shell, root@ThinkPad:~# ll /media/ total 36 drwxr--r-- 6 root root 4096 2011-05-12 16:41 ./ drwxr-xr-x 22 root root 4096 2011-05-12 13:14 ../ drwxr-xr-x 5 ...
2
votes
1answer
588 views

My newly added user cannot write to folder

Suppose I installed ubuntu with the user usr1 then I added usr2. I then create a group grp1 where this 2 users are added. A folder is owned by usr1 and has group grp1. But when I login as usr2 I ...
4
votes
3answers
4k views

problem with chmod command

I don't know what is happening experimentx@workmateX:/var/www$ sudo chmod 0777 -r /var/www/ chmod: cannot access `0777': No such file or directory experimentx@workmateX:/var/www$
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votes
1answer
134 views

Is there any way to make sure that any file created in a specific folder has a certain group as owner?

I know that you can set a directory up so specific groups have access to it, but is there any way to set it up so that any new files created in it automatically have a specific group as the group ...
29
votes
3answers
101k views

'chmod u+x' versus 'chmod +x'

What is the difference between chmod u+x and just chmod +x? I have seen a ton of tutorials that say to use u+x to make scripts executable. However, the u is not mentioned in the chmod help or ...
6
votes
3answers
27k views

Default file permissions for php user www-data

I have a php installed on my ubuntu machine. The web root is /var/www I set the permissions for this folder like so: sudo chown -R ftpuser:www-data /var/www ftpuser is the user I set up so I ...
9
votes
3answers
16k views

Error after sudo-ing “sudo: must be setuid root”

On a colleagues computer, everytime I use a sudo command, I get this error: sudo: must be setuid root I tried various things mentioned on the internet, like changing the permissions to 4755 from a ...
64
votes
9answers
61k views

How do I use 'chmod' on an NTFS (or FAT32) partition?

I have a script that I need to execute on an NTFS partition. The script's permission is set to 600. I attempted to modify the permissions by running chmod 755 script.sh, which doesn't report a ...