chmod changes the permissions of each given file according to mode, where mode describes the permissions to modify.
30
votes
7answers
19k views
How to '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 ...
12
votes
1answer
2k 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 ...
11
votes
3answers
22k 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 ...
8
votes
3answers
627 views
Copy files without losing file/folder permissions
How can I copy files/folders from an ubuntu computer on a ext4 filesystem to another ubuntu computer which also is on an ext4 filesystem, using a usb stick which uses a vfat filesystem without losing ...
7
votes
4answers
1k views
What if I accidently run command chmod
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 ...
7
votes
2answers
5k 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 ...
6
votes
2answers
8k 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 ...
6
votes
1answer
133 views
Chmodded 000 the home folder,now unable to log in
I accidentally issued the following command sudo chmod 000 /home/username/. And now I'm unable to log in. Also when I'm trying from the bash shell, my home folder is appearing as ...
6
votes
4answers
6k 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 ...
6
votes
2answers
128 views
How can I recover from chmod -R a-wrx / command?
Today I ran sudo chmod -R a-wrx /. Now nothing is working. Can anyone help me recover my system?
5
votes
2answers
14k views
Script doesn't run via crontab but works fine standalone
I have a script that reminds me to restart my computer if uptime is more than, say 3 days (although its set to 0 days now just to check if the script is running as my computer has been up only over a ...
4
votes
2answers
2k 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 ...
4
votes
3answers
553 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$
4
votes
3answers
139 views
Is `chmod -R o+x /home` dangerous? [duplicate]
I'm very new to Ubuntu. During work on my home pc, I accidentally made the following command:
sudo chmod -R o+x /home
I want to know if it's dangerous to open access for other users and, if so, how ...
4
votes
3answers
3k views
How to fix sudo after “chmod -R 777 /usr/bin”?
I enetered chmod -R 777 /usr/bin and now sudo is not working.
It is giving error that sudo must be setuid root.
On looking via Google, some advice said to run chown root:root /usr/bin/sudo
chmod ...
4
votes
2answers
17k 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 ...
4
votes
2answers
4k views
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 ...
4
votes
1answer
188 views
Assigning different directory permission for each different groups
I am running Ubuntu 12.04 64bit server on ext4.
There are four user groups - marketing, sales, admin and etc.
I need to assign different permissions to /archive as follows:
rw for the marketing ...
4
votes
1answer
87 views
How to change default file/folder permission of specific user?
How can I make any folders or files created by a certain user always be public (accessible by anyone) in Ubuntu?
3
votes
1answer
138 views
files disappeared after using chmod
I set my /var/www/wordpress folder to 744 permissions and all of the files within disappeared.
If I right click the /wordpress folder and click properties, it says there are 0 bytes in the folder but ...
3
votes
1answer
1k views
How to get chmod (octal) permissions of the folder in the terminal?
I can look in properties of this folder but I want to get properties fast and in digits (octal, e.g. 755, etc.)
What am I to type in terminal to know the chmod of the file or folder I want?
3
votes
1answer
132 views
Directory permission
I am running 12.04 x64 server on ext4 disk. There are two user groups 'A' and 'B'. For a specific directory, I would like to give its all permissions to user group 'A'. Also I would like to give only ...
3
votes
1answer
737 views
What are the standard file permissions for the /etc directory(file)
I kinda screwed up the /etc directory by running:
sudo chmod 417 /etc
Leaving me unable to use sudo:
sudo: can't open /etc/sudoers: permission denied.
sudo: no valid sudoers sources foundm ...
3
votes
2answers
110 views
changed the permission of bin to 700
I changed (through chmod) the permission of /bin to 770. Now, ubuntu does not boot. How do I fix this problem?
3
votes
0answers
35 views
chmod: permissions of a directory don't change [duplicate]
I have some issue with chmod:
mis@hell:/var/www/blah$ sudo chmod g+w .git -v
mode of `.git' changed from 0755 (rwxr-xr-x) to 0775 (rwxrwxr-x)
mis@hell:/var/www/blah$ ls -la | grep git$
...
2
votes
2answers
13k views
How can I change permissions of a folder, including its enclosed files and subdirectories?
I need to recursively change the permissions of all folders, sub-folders and files from within ~/.local/share/Trash/expunged Does anyone have a clue or idea on how to do this?
I have tried ...
2
votes
2answers
2k views
How to repair “sudo: /etc/sudoers is mode 0640, should be 0440?”
Why might sudo chmod -R a+w * cause
sudo: /etc/sudoers is mode 0640, should be 0440 sudo:
no valid sudoers sources found, quitting
and how might it be made to work?
2
votes
4answers
820 views
Changing file permissions problem
A few hours earlier I bought a beaglebone and now I am trying to add nameserver 8.8.8.8 (google DNS) to /etc/resolv.conf. However when I open it with vim and try to add my nameserver, it gives me E21: ...
2
votes
2answers
7k views
Setting directory file permissions in Ubuntu using chmod
whats the equivalent command of this (Fedora command) for Ubuntu:
chmod +a "www-data allow delete,write,append,file_inherit,directory_inherit" app/cache app/logs
When I try the above with Ubuntu ...
2
votes
2answers
2k 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
4answers
824 views
Permissions for apache webroot folder on dev server?
I am a web developer and have Apache setup on my local system for testing.
I keep running into issues with the permissions e.g. unless I chmod any new directories to 777 my IDE cannot write to the ...
2
votes
1answer
402 views
How to use `chown` and `chmod` to make a “pipe” or “pass through” link from guest directory to elsewhere
I want to either extend the size of my guest partition or figure out how to copy stuff from the guest partition to my normal /home directory.
(Because of some other problems I can only run Xorg as ...
2
votes
2answers
3k views
chmod: invalid mode: `+a'
System: ( lsb_release -a )
Distributor ID: Ubuntu
Description: Ubuntu 10.04.4 LTS
Release: 10.04
Codename: lucid
This is my command:
sudo chmod +a "www-data allow ...
2
votes
3answers
1k 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.
...
2
votes
2answers
186 views
Why doesn't chmod work on a file under /media?
I want to execute a script file from terminal but it shows error
root@silambarasan-PC:/media/D-DEVELOPME/androidSdk/adt-bundle-linux-x86/sdk/tools# ./android
-bash: ./android: Permission denied`
so ...
2
votes
1answer
466 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 ...
2
votes
1answer
125 views
Are world-writable folders safe?
Is it safe to chmod a directory 777, or is it a security risk?
One of my scripts requires that in order to run in multi-user situations, and I'm wondering if it's okay.
2
votes
1answer
284 views
How do I change the default permissions of home directories created with adduser?
How can I change the default chmod of new home directories (created with adduser)?
2
votes
3answers
454 views
How to transfer file permissions from one folder to another?
I did cp -r on a folder (copy), then removed the original. I have a backup with most of the files. How do I restore the permissions of the files & folders on the copy using the backup?
It ...
2
votes
4answers
232 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?
2
votes
3answers
383 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 ...
2
votes
2answers
393 views
Can't mount UBS flash drives or my CD/DVD drives
How can I fix the permissions to get rid of the following error and mount my USB and internal CD/DVD drive:
Adding read ACL for uid 1000 to `/media/bret' failed: Operation not supported
These ...
2
votes
1answer
190 views
Using FTP with a Shared Windows Folder
I started to use Ubuntu two weeks ago, I still have some difficulty in understanding the whole world of Linux.
I'm in front of the following scenario:
I have a Windows computer running 12.04 in a ...
2
votes
1answer
82 views
Locked out of drive on Ubuntu Server
I was trying to delete some torrents that I had downloaded with transmission-daemon and was unable to from my samba share on windows due to transmission's default file creation permissions.
I ...
2
votes
3answers
2k 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 ...
1
vote
2answers
1k views
Unable to Login (Ubuntu 11.10)
I'm having a weird issue. When I put my password using my account (ramiz) on the login screen of GUI, a blink of screen and it take me back to the login screen. I tried with Guest user and it is ...
1
vote
2answers
51 views
Peculiar permissions/group trouble
I've tried creating a separate user account for rtorrent and sickbeard (a torrent downloader) so everything isn't running as root but I've bitten off more than I can chew.
I've chmodded 2770 (setgid, ...
1
vote
1answer
104 views
Nautilus plugin to chmod
Some time ago (around Ubuntu 8.04) there was a plugin to Nautilus to change permissions tab in file properties window. It was showing permissions as checkboxes for R/W/X for user/group/others. I can't ...
1
vote
1answer
362 views
local wordpress installation, plugin installation and file permissions
I have a local wordpress installation and got everything working, until I tried to install a new plugin. Trying to activate the plugin, wordpress asked me for FTP connection information, which I ...
1
vote
2answers
1k views
chmod u+s in /var/www
i have a problem at granting the right rights for the right user...
i want to run pootle with apache, so i downloaded pootle. Then i copied it to /var/www, installed it and gave the www-data user ...
