Security :: Permission Denied When Trying To Use The Chmod Command?
May 4, 2011
nfs mounted directory which is mounted rw. I and everyone else are members of a common group. We all have write permissions in the tree: All files and directories in the tree are in the common group. All directories are set to 775 and all files are set to 664 or 775, as appropriate.If a file is owned by someone else, even though the file and the directory are group writable, I get permission denied when I try to chmod the file.
Here's the command synopsis:
997 > ls -l portparms.txt
-rwxrw-r--. 1 bdaugher fc 4091 Sep 5 2003 portparms.txt
For some reason I am having some issues with permissions of some images. They don't render because they are not set to 644. Now for some reason when I uploaded these files onto my shared hosting with cPanel the files work fine and permissions are fine. I can see there is a permission issue for the files locally on my Mac (OS X - El Capitan).
When I changes these locally on Mac the permissions go all weird and are prefixed with Custom, rather than mac-user-name: Read & Write, staff: Read, everyone: no access. then changes to custom: read & write etc. So then i tried changing permissions on web server see below and I get permission denied and after all the files are gone, i can't delete the images folder through SFTP or SSH. I changed back the image to 755 and tried deleting and still nothing. Not sure what the problem is. Before I chmod I checked that the images are set to the correct user and group as per the rest of the site.
So I try: Code: Select alluser_name@debian:/var/www/html/_files$ chmod -R 644 images
and I get this return: Code: Select allchmod: cannot access ‘images/box-icon.svg’: Permission denied chmod: cannot access ‘images/ie-icon.svg’: Permission denied chmod: cannot access ‘images/google-plus-icon.svg’: Permission denied chmod: cannot access ‘images/mobile-ready-icon.svg’: Permission denied chmod: cannot access ‘images/404.jpg’: Permission denied
I have stipped down the test to the basics and still can't get it to work.I have a file called test.php stored in /usr/share/data/audio (an aliased directory in apache). This file simply contains the code...
Code: <?php fopen('play.xml', 'w') or die("can't open file");;
I am desperately trying to recover two folders from a Freecom FSG 3 NAS. As far as I am aware it is running Linux 2.6 based on Snapgear. After working through the hardwares' recovery procedure a number of times, the state of the device appears to get worse and worse. So I have attempted to rescue the files by using a program called Putty to access the device over SSH.When I access the device using Putty I login as admin. The folders I need to recover are located in the home folder. Listing the contents of the directory I get...
I recently installed Ubuntu 10.4 on an Intel machine. The machine also has Windows 7. So some of the partitions of the hard drive are Windows compatible (NTFS). They are all mounted when system is booted with Ubuntu and all files are accessible. However, when I try to change permission or limit access to a group, CHMOD command does not work. It doesn't return any error and everything seems to work fine but I can't change any permission.
How can I give execute permission to chmod command from run level 3.Because in GUI mode we have the execute option in the properties of file. E.g. I gave following command chmod -x chomod After that I want to give the execute permission (x) to chmod command again but how from command prompt?
I've done a fresh install of Ubuntu 9.04 and tried to create a folder using the File Brower went to my user account and proceeded to create a directory. Then when trying to cp a file to this new directory I get permission denied. I checked the directory permissions and discovered that its owner was root not the user that I was signed in as.
So I had no choice but to enable the root account so I could copy the file I wanted. Why could I not have copied the file using the user that I was signed/logged int as without resorting to changing users to root. I hope that its not a bug of some kind or maybe I did something weird during the install. I would like to disable the root account again.
I am trying to install COMSOL 4a in Ubuntu 10.04 and when I try to run ./setup and I am already connected as root the command line gives me a permission denied error.
I have, say, 10 machines, connected via NFS and NIS. There's a server which exports the /home using NFS, and exports the user names using NIS. All machines are working fine. I am able to ssh to the machines remotely and get my work done.Recently though, one of the machines (say M, for easy reference) would not allow any other machine on the NFS network [or outside the NFS network] to ssh into it. Every time an ssh attempt is made, 3 IP addresses [including the machine from which an ssh attempt was being made] are added to the /etc/hosts.deny file on M, and the error message on the other machine shows 'permission denied' after the password is entered. I tried using various options that ssh provides, but I cannot figure it out. I also tried uninstalling and reinstalling openssh-client and openssh-server on M, but it didn't change anything.
Another point to note is this: another user made use of M before, for a while, by disabling ssh passwords - so he could access M without having to enter his ssh password. That individual can still log in to M. All others who require to enter a password cannot ssh into M.
Is it possible to change the general permission denied error. I have some rather young users on this system that think they can "hack the gibson" and I would love to change the general error message to something a little more rude/funnyex:# cd restricted area -sh: cd: restricted area: Permission deniedI am curious if its possible to change the error message in general?ex:# cd restricted area-sh: cd: restricted area: (funny/rude message goes here)Quick info:This is a Gentoo 2008.0 system, I would also love to do this on my slacware and OpenBSD boxes as well just for kicks.
I did create an rsa certificate with ssh-keygen using my root account on a client: ssh-keygen -t rsa -b 2048 no passphrase I did copy the rsa pub_key from my client to the server scp id_rsa sampleuser@sampleserver:/home/sampleuser/.ssh/authorized_keys
I did change the ownership to the "sampleuser" of the pub key file on the server: I trayd to connect: ssh sampleuser@sapleserver
I get that: permission denied (public key)... I know I do smth wrong but I don't know what.
This is weird, today I updated my system and while trying to visudo from single user mode got
"cannot read /etc/shadow: Permission denied"
which kept me from doing anything until I switched to file permissions of 400 on shadow, then back. Is this being experienced by anyone else or just me? /etc/security/limits.conf doesn't seem like it wants to change in enforcing mode either and I can't find any alerts to provide clues on the situation.
I have recently bought a new laptop, installed my first linux OS on it (Ubuntu 9.10) and an external hard drive with 500GB on it for backup. For the first few days my external hard drive was working fine, but then eventually it wouldn't let me copy/move/delete stuff to and from it. So I kept trying to change the permissions but it wouldn't let me.
I figured this would be a very very common problem, so I looked up some forums to try out the methods but they didn't work. So I thought I would ask you guys for help because I am pleased with the support. I wouldn't think this would be a hard problem to solve.
I have an external hard drive that has all of my Apple Powerbook G4 files on it. I plugged in my "Journal Extended" external hard drive into my new HP laptop with Ubuntu 10.10 on it.
All of my files are on the hard drive still, however lots of them have a little X on the folders and when I try to open them it tells me I don't have permission? How can I force the permission for everything on my external? It's my own files and I can't even access them lol.
I have a CGI script that when called runs another script as a different user. Yet when the script does run I keep getting a permission denied in the logs and the script fails
In the sudoers file- Defaults env_reset www-data ALL=(charly) NOPASSWD=ALL
For the full question- When looking at /etc/sudoers there is the defaults line that you can add things to. When doing a sudo -L so that I can see what I can put on that defaults line. Can an individual user have specific defaults? Ones that don't effect the rest of the people in /etc/sudoers?
Whenever i copy ELF or BIN files from the filesystem of linux i must get permission denied. For this case i have gone through the linux security module but didn't get much help regarding the permission denied only in case of copy of ELF and BIN files from filesystem. how can i proceed in this. WORK DONE:
1. Downloaded linux-2.6.25.14
WORK NEEDS TO BE DONE:
1. compile the kernel with some modifications in linux security module to get the desired results but this time i am unaware of that.
I am trying to wade through the semanage jungle to get permissions for a tftp client. I followed the HowTos [URL] but I get the following at the client:
tftp> status Connected to 192.168.1.101. Mode: netascii Verbose: off Tracing: off Rexmt-interval: 5 seconds, Max-timeout: 25 seconds tftp> get hello.o4 tftp: hello.o4: Permission denied
I finally figured out that the firewall directives shown at the end of the HowTo refer to semanage although the options are stated incorrectly according to the man page for semanage. I did insure that the file hello.o4 in /tftpboot has read permission for everybody.
I am using Ubuntu server edition 10.04.1 running in Vmware server 2.02.I am connect via Putty so I can use copy and paste.My first goal is configuring a ftp server using PureFtpd using this guide.In section 10 I need to write this command
If I try the sudo mv command on the file listed below I get the error listed. I am confused. It is my file & I have permissions. Somehow a slew of files on my system are now showing this way. This seems to correspond when I ran rsync from my netbook to sync it up with my desktop where I am having a problem.
I did some reading on Openvpn and am following some instructions I found @ Install & Configure OpenVPN SSL VPN in SUSE & openSUSE Linux | SUSE & openSUSE
I keep getting the same error message when I run the . ./vars command "NOTE: If you run ./clean-all, I will be doing a rm -rf on /etc/openvpn/easy-rsa/2.0/keys"
But when I run ../vars I get "Bash: ../vars: Permission denied"
i hope i'm posting in the right forum "Networking" subject related to remote onnection.. all the suggestions and solutions i found on the net did not do it for me..i have redhat(EL v4) and hp-ux(11i B v23) servers
i'm able to use remsh from hp-ux to hp-ux with the command hpux1_srv> remsh hpux2_srv -l hpux2_user uname -n with remsh from hp-ux to redhat it gives permission denied.
I'm trying to set up a Fedora 11 server so that users have only SFTP access. The relevant lines from my "/etc/ssh/sshd_config" are:
[Code]....
I can log in okay, I can type "cd /" and "cd upload", but when I try an "ls" command, I get: Couldn't get handle: Permission deniedand when I try to get the file "junk" (listed above), I get: Couldn't stat remote file: Permission deniedAnyone know what I'm doing wrong?
What does chmod 000 do?when i create a chmod'd file with the 000 permission what happens?I tried creating a file with 000 permissions, and I was still able to read and write to it. So what what does chmod 000 actually do?
that works to disallow non-owners from renaming the file, but what I wouldlike to do is disallow EVERYONE ( including the owner of the file ) fromediting, moving, or changing the filename once it is created. the only personwho should be able to make those changes is a special user.
When I try to issue "su -", I get "su: Authentication failure", and I'm 100% sure password I enter is ok.
I think it started to happen after I issued chmod +s /usr/bin/screen chmod 755 /usr/bin/screen which I believe is unrelated to this problem, and, chmod -s /bin/su (-s by mistake) chmod 755 /bin/su which most probably made the whole mess...
this is not the part of the problem I believe but here's some background why I did that... when trying to make possible for screen sessions to be started automatically on boot under non-root account, I entered something like "su - username -c "/usr/bin/screen -dmS screenname ./executable-file"" in bootmisc.sh, but I was getting "must run suid root for multiuser support", so I tried to fix it, and now I can't login to root account no way.
