Use chown to change ownership or chmod to change rights. The -R option makes them also change the permissions for all files and directories inside of the directory.
sudo chown -R <username>:<usergroup> /pathto/Files
this post was submitted on 29 Sep 2024
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Another user suggests youruser:youruser and not usergroup, if usergroup would I just use the Owner group or?
Thank you for your answer.
I believe you can just do youruser: and chmod automatically uses the correct group. The other user is also technically correct as the usergroup is called the same as the user so both commands are the same.
Typically the user group is identical to the username but not always. For example a name containing uppercase letters may be transformed to be all lowercase for the user but contain both cases in the group.
Thus you should get the user group in scripting separate from $USER
Those are placeholders. Your user has a name and is in a group. No idea what that group is called like. For root it is root:root
youruser:youruser just means the user’s group. For instance, on my fedora 40 install, my user (bippy, just a silly name), is the username for my user, but also the name of the group that my user belongs to.
So when I do a chown, I typically do chown -R bippy:bippy path/to/directory
If you wanted to give permissions to a different group on your system, but also to your main user, you could do a chown -R bippy:wheel /path/to/directory (wheel is an example group name, which is similar to sudoers)
I would advise against that. Udisks2 should mount writable always.
this is a file permission issue, nothing to do with LUKS. The solution should be to access the files as root. You could use the command "Sudo chmod a+rwx /path/to/drive" to set completely accessible file permissions, which is not a best practice typically, but would be fine here since the drive's encrypted.
root can always access them. it's exactly for solving these kind of maintainance and repair tasks.
btw don't forget to make backups. repairing things can go sideways.
sudo chown -R youruser:youruser /path/to/mountpoint
Will make all the files in the path owned by you. Be careful if you have more complex permissions on there they will be lost.
Will try tomorrow when I get up.
Would /dev/sda suffice as mounting point or?
Haven't set any permissions outside standard given ones by usage.
Thanks for answering.
/dev/sda is the whole raw disk - you typically don't want to directly interact with /dev/sda, unless you are partitioning or overwriting it. There are a few layers between that device and the files:
- raw disk - /dev/sda
- disk partition - /dev/sda1
- luks container - when unlocked, mapped to /dev/mapper/{name}
- ext4 filesystem inside the luks container, mounted somewhere like /mnt, /media, etc
You'll need to find where that ext4 filesystem is mounted, and run the chown command on that. You can run lsblkand see a tree of the above hierarchy, with the ext4 filesystem's mountpount shown in the right-hand column.
You need the mount point not the device. Probably something like /media/Files
Will make all the files in the path owned by you. Be careful if you have more complex permissions on there they will be lost.
This is where ACL permissions would help. He could give his new id ACL permissions to the files and that wouldn't mess with the current permissions.
From the root/beginning subdir: sudo setfacl -R -m u:{replace with your new id}:rwx .
Use udisksctl mount and not the old mount command. This should work. No need to change ownership.
You could try using bindfs to spoof the original user id and then chown the whole drive after successfull mounting (i'm a noob, just my understanding of the issue, don't know if that's really possible)
Your files are not lost. You will be able to access them with your local root user, either through the command line or a GUI file explorer that supports actions as root.
Thank you.