Tagged Questions

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

learn more… | top users | synonyms

1
vote
1answer
611 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 ...
1
vote
2answers
356 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
7k 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 [email protected]:/path/to/folder folder Then I found that the folder is ...
12
votes
1answer
4k 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
5k 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
5k 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
576 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
3k 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$
3
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 ...
28
votes
3answers
89k 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
26k 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 ...
8
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 ...
60
votes
9answers
52k 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 ...