General :: RW Permissions On External HDD - Chmod: Changing Permissions Of `whatever': Read-only Filesystem
Mar 15, 2010
I have a problem with my external hdd, I mounted it manually and in the mount table it says ive got rw permissions. But when i try to change permissions it says:
chmod: changing permissions of `whatever': read-only filesystem.
This is my mount table:
[root@localhost ExtHDD]# mount
/dev/mapper/VolGroup00-LogVol00 on / type ext3 (rw)
none on /proc type proc (rw)
none on /sys type sysfs (rw)
I run a small site and today I've discovered that my site is down. I found that cPanel has flagged the account suspended even though I haven't got any quotas on the account. I don't know what went wrong. I've tried to unsuspend the account in WHM but a certain part of the function failed.
Quote:
safe_userchgid: chown: /home/crocbits/public_html: Operation not permitted at /scripts/cPScript/SafetyBits.pm line 93.
After searching the internet someone mentioned that the problem might lie in the permissions of the public_html folder. I had a look at the permissions and the folder had no permissions d----- When I try to chmod the folder I get this error:
Quote:
chmod: changing permissions of `public_html': Operation not permitted
I have no idea what to do next. All the files in the directory are locked too. I tried to move them but this command isn't allowed either. I ran these commands under the 'root' user in SSH.
I have created directories in root. I am looking for the chmod command to allow all users read and write permissions to a specific directory. I have done chmod 775 for a file but I need this for a directory. This includes permissions on all files and sub directories.
I've hit a wall here; I'm attempting to find some way by which to view files and cd into directories on a device mounted read-only. So I need the permissions to read, write, execute (and the same with directories), but chmodding is out of the question because I don't want to alter the drive one iota.
I guess what I could do--what I was thinking of initially--was to dupe the whole drive and then mess with permissions. This wouldn't affect the original (actually I'm working on a duplicate of the original, but I'm treating it as if it were the original) but I was hoping for something that would maintain data integrity. This is a forensic application and not altering the data is very important.
Finally I managed to install my printer/scanner drivers.The last thing I need to do is to add the following two lines to 40-libsane.rules (which is a read only file):# Brother scanners ATTRS{idVendor}=="04f9", ENV{libsane_matched}="yes".How can I change permissions for this file or add these lines without changing permissions?
Yesterday, I bought a 1TB WD Passport, for backup and storage. It uses NTFS, and I've had no problems manually mounting and moving files to and from it from root. However, I don't like having to be root to in any way modify the data on the drive. In order to avoid this I decided to create a line in fstab that would allow permissions to the user, so I added this to my fstab:
This allows me to mount, unmount, and peruse the external HDD - however, if this is active, neither the user NOR root have permission to make any changes. The HDD acts as read only, even though there is no "ro" option on my fstab.
I had created a file under a directory & set the permissions through chmod command but when I create another file under this directory, I get the default permissions. Is this due to umask or can I set the file permissions through chmod under a directory.
I would like not check first, and if not ok, then to write the permssisions. Means no use to write endessly on disk if not needed. How to check and fix the permissions to avoid writing (chmod o-rwx /home/*) ?
I have a Qnap 219p NAS to which I have connected a USB external harddrive. I can access the external harddrive from my windows box using the network share, but at first i couldn't access the folders. The permissions set in the NAS GUI for the external drive is correct and are identical to the permissions set to the 2 internal drives.
I ssh'ed to the nas and used 'chmod -R 770 /share/external/sds1' - this granted me access to the folders, and some files. I can open all files in the root, but if I go just 2 folders 'deeper', i can't open the files in this folder, and in the folders after that.
In ssh, if i navigate to the folder wher I cannot open the files and use 'ls -l', i can see that the permissions (770) hasn't been applied to these files. How can I get chmod to apply the 770 permission to all files, folders, subfolders and files in subfolders etc., without having to chmod every folder one by one?
I've had a look at some similar threads but as I'm very new to linux they're already a bit technical for me. Sorry, this calls for someone with patience. I gather from other threads that disconnecting an external drive without unmounting is a no-no, and this seems to be the likely cause. Now the disk is read only and I'm unable to change any settings through the usual control panel on ubuntu. I'm just not familiar with the terminal instructions. I tried to cut and past a few command lines from other threads but I got some warnings that proceding could damage data. Like this one: WARNING! Running e2fsck on a mounted filesystem may cause SEVERE filesystem damage.
I have installed php, mysql, and apatche. And i need the /var/www/ folder to be able to be read witten, and acsessed by anything. I have tried chmodding 777. But it still doesnt work.
i borrowed an external hard drive from my friend to back up a load of stuff on my windows partition before reinstalling it. I am doing this through ubuntu. I am trying to zip up folders like My Documents etc and chuck them on the external hard drive but it always comes up with errors to do with read/write permissions. In the permissions tab on the folder properties of the ext hard drive it says I am owner but i have no file access (only folder access is create and delete files). When i try to give myself read/write permission it just goes straight back to nothing when i look at it again.
I am trying to automate ftp to transfer files from windows to Linux server automatically and my script looks like this .
@echo off SET CUSTOM=/apps12i/oracle/KIRAN/apps/apps_st/appl/custom/12.0.0/reports/US echo user oracle> ftpcmd.dat
[code]....
Any files we transfer through ftp from windows , their default permissions to be set 755 automatically . We are using Red Hat Enterprise Linux AS release 4 (Nahant Update 7) .
I want to have two kind of users in a work machine having ubuntu 10.04,
1) He is the admin, have sudo privilages and install, do all types of work, his username is abhilash
2) A user who is normally a IT administrator, who can just install or remove softwares, but cannot access files of abhilash.
I'm trying to do this and my head is going blank, The problem where i'm stuck is, if IT admin can install softwares, then he can become sudo as sudo su, then he can view my files
So here is a small test i did, first with abhilash.
Code:
Now others and group don't have any permissions! But when IT Administrator becomes root, he can see this file
i have installed linux4 on vmware and now i am to copy any file but not able to paste it in any directories and when check the permissions there is no write permission for any of the directories .Not able to use chmod to change the directories permissions.
I first installed linux as ubuntu version 9.04 straight off of a Computer Active CD and liked it so started to delve into file permissions and authorisations, simple stuff I suppose just so I could feel my way around things for a while. Using the built in Ubuntu software centre I downloaded and installed a prog which handles authorisations and I found that very helpful but then through the update manager I installed the latest distribution update (9.10) and now find that the authorisation software only lists a couple of things that I can get to and consequently every time I mount one of my hard disks I'm asked for my admin password even though I am logged in as administrator which is a hassle,
a small one but there all the same, as a newbie I realise it must be me not understanding something but I just dont know what, also in the previous version right clicking on the logging out panel gave you an option to remove the 60 second shutdown or restart delay and that has disappeared in the new version, again its really only just a nuisance thing but I find that sorting out this sort of thing will help me to understand the system
I have a very large and deep directory. I would like to make all of it read only. The problem is I guess I have to distinguish between files (which will get a=r) and directories (which will get a=rx).How can I do that?
I installed Sun's virtual box 3.1 under Ubuntu 9.04. It worked flawlessly. I upgraded to to 9.10 and know I get a kernel error. rc=-1908 Now I cannot get Windows to load.
I am trying to run a cron job as an oracle user. I put the user in the cron.allow file but it still won't run. Other users are able to run a cron job though. I think it's the way the oracle user was created and I wanted to recreate it. However it owns a lot of other file systems as well as the database. Is there a way to recreate or reset the oracle account without impacting what is currently in place?
Recently updated the kernel in Ubuntu 9.10 and for some reason now, a folder which was not read-only now is. I can't delete anything from it. Have tried using the GUI for changing permissions, however, it has a mind of it's own and won't unlock the folder.
Anyone had this happen where a folder locked when you didn't want it to be?
I have a CMS that has a brilliant backup option with one flaw, it can only create a full backup in a directory inside the web root. In this case /var/www/site/backups. This is not practical for security as the resulting tar.gz file contains a full mysql backup as well as other items that the general public shouldn't be downloading.What permissions do I need to set so that the directory /var/www/site/backups cannot be browsed to in a browser but can be read / written by the CMS when a PHP script calls it?
What I want to be able to do, is have create a group, for example called "group1" and set its default permissions to read & write, instead of the usual just read.
So when I add a user into "group1" they automatically have read & write access to all files & directories which is in "group1".
Oh & I use crunchbang 10 (statler) for my desktops & Ubuntu 11.04 for my NFS/print/SSH/etc/etc server
I'm pretty new to Linux. Though I've used it for a little bit, I barely know any shell commands. I recently migrated from Mint to Fedora. Installation went fine and I thought I was doing great until I tried to copy something onto one of my ntfs partitions (I got them automounted through changing fstab). Now I can't change the permissions with sudo chmod... it says I can, but nothing changes. And, while the folders are listed as allowing rw for the user group I set up, I can't actually change anything. I'm guessing I've done something wrong with my fstab file.
My fstab file is:
Code:
I should probably note that I'm using NVIDIA fake RAID 0, which is why my device locations are all /dev/mapper/nvidia_fcficeibp#
The command I have tried to change permissions is:
Binary files need only execute permission to execute. No read permission is required. But all executable files must be read by the kernel into main memory before executing. Also script files need both read and execute permissions for executing the file.
