All Questions
Tagged with linux permissions
1,339
questions
0
votes
1
answer
9
views
Unable to set permissions for power operations under Debian Bookworm
I am building a server under Debian Bookworm that it is to be used basically to read and save old tapes. The concept is to have the box full of units and be seldomly used and, when this occurs use a ...
- 103
0
votes
1
answer
58
views
LINUX - ownership inheritance of parent dir not working, only group is applied
Ownership inheritance of parent dir not working, only group 'apache' is applied
Owner should be 'apache' but is 'root'
OS: rocky linux 9,
selinux - getenforce : Permissive
umask 002
umask:
-----
0002
...
- 3
0
votes
0
answers
26
views
Partially shared home: dual boot, same /home partition, one user per OS, same UIDs for perms, but different home dirs
Here is a general outline of what I want to achieve, given that I am the only user of my computer:
Dual boot with 2 Linux OS
Easily share (read/write, probably no execute) some of the data accessed ...
- 101
0
votes
1
answer
37
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How to set Linux directory permission for writers?
I have an directory called Videos , and its permission is 3775, owned by triplez:writers.
drwxr-xr-x root root /
drwxrwxrwx root root usbhdd
drwxrwsr-t triplez writers Videos
When the ...
- 3
0
votes
0
answers
19
views
Mounting drive with mount command and fstab do not work as intended
I have two external USB drives which I would like to be mounted to specific directories which are owned by my user. A script runs on startup which mounts all my drives in their specific locations ...
2
votes
1
answer
106
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Is it not recommended to use unprivileged users to insmod drivers in Linux?
Background:
Unprivileged users can use CAP_SYS_MODULE capability to insert module to kernel.
Insmod a ko include load driver and driver init.
My issue:
My test driver will crate debugfs at ...
- 23
0
votes
1
answer
241
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rootless podman container needs access to host's SSL cert and key - what's the correct thing to do here?
As the title says, I need a rootless podman container to have access to SSL keys (created with certbot, of course) from the host (Fedora CoreOS, SELinux active) machine, since the main server on the ...
- 141
0
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0
answers
70
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Is it possible to temporarily disable or block a samba share without server restart?
I have Linux server hosting separate samba share for users on some windows clients (each user would have a linux client also accessing their share) (users have authenticator app on separate devices). ...
- 1
0
votes
0
answers
70
views
Permission denied for AD group for NFS directory
I have permission denied problem with NFS share.
On server1 I have /etc/exports file with content:
/data/test server2.example.com(rw,no_root_squash).
/data/test directory has 770 permissions with ...
- 1
0
votes
1
answer
87
views
pppd, docker, socat and permissions
We have an [Ubuntu 20.04] Docker image, used as part of a test system, in which I need to run pppd (to test a dial-up connection), where pppd is connected to the physical modem via a socat loop. My ...
- 153
0
votes
0
answers
116
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Samba Server does restrict writing but not browsing or reading
I made a Samba Server with 3 shares for each user and I would like to restrict access to it so only those users can access their folder. I have been browsing so much only that I got a mad headache ...
- 1
0
votes
1
answer
271
views
"Permission denied" when `rm` ing a file (in an NFS mount), even when using sudo
Context:
Storage is a Kubernetes Persistent volume, provided by a TrueNAS NAS and accessed via NFS (with k8s accessMode ReadWriteMany)
I have checked the Permissions for the TrueNAS Dataset and ...
- 199
0
votes
0
answers
30
views
Why doesn’t /etc/logrotate.d/tomcat run daily but will only take effect if I manual trigger it?
I have a Talend Data Stewardship application in my server and I would like to rotate the catalina.out log file.
Thus, I referring https://dzone.com/articles/how-rotate-tomcat-catalinaout, and create a ...
- 291
0
votes
0
answers
265
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Can not use my own mosquitto config file "Unable to open"
Unable to use my own config file with mosquitto, passing the default configuration file works fine:
localhost:/etc/mosquitto # sudo mosquitto -c /etc/mosquitto/mosquitto.conf
1706606342: mosquitto ...
- 1
3
votes
1
answer
613
views
What is the meaning of the manage-gids parameter in /etc/nfs.conf?
I have run into an issue (on a system which I am not root) where there is a directory using an acl to manage access, I should be allowed access (and I am allowed access if I do a newgrp to one of the ...
- 33
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votes
0
answers
103
views
Should files from an RPM package be installed with root permissions?
Our software is installed via RPM alongside a customizable service user and group. No other users need to run the software besides the service user. I've spent some time searching and can't seem to ...
- 101
0
votes
1
answer
1k
views
Permissions Denied error when trying to run a command via the authorized_key file
I am trying to get a command to run via the authorized_keys file. I have set the perms to 600 for the authorized_keys file, and the .ssh dir to 700.
In the authorized file I have the following:
...
- 11
1
vote
1
answer
675
views
How to safely change uid and gid for apache user (www-data) on Ubuntu 22.04
I have a quite specific situation where a migration needs to happen from one brand od linux to ubuntu 22.04. So far, so good. Among other things original setup have multiple users and respective ...
- 113
0
votes
3
answers
941
views
How to allow apps to open and perform actions as sudo?
I am running Debian 12 with KDE Plasma desktop 5.27 and my problem is that every time I open an app it won't allow me to do things as sudo or permissions are not set correctly.
For example, when I ...
- 13
1
vote
1
answer
1k
views
Set umask for systemd service, but files created by the process are still using the default
This is the unit for the Transmission torrent client, which was compiled and installed from source.
/etc/systemd/system/transmission.service:
[Unit]
Description=Start the Transmission daemon
After=...
- 431
2
votes
1
answer
828
views
Tomcat runs from the command line, but will not start as a systemd service
I have built an Apache Tomcat 9.0.83 server on Oracle Linux 9 which will not start as a systemd service, but it does work if you run it from the command line.
sudo su - tomcat /u01/tomcat/my_server/...
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3
votes
1
answer
297
views
about special permissions
if I use stat command I see this "0" appearing in "Access" : for example Access: (0644/-rw-r--r--). After some research, I think this value is linked to what is known as "...
- 177
0
votes
0
answers
362
views
Giving rw permissions for everyone on USB device
I just bought a Zigbee USB device, and I plugged it into my server, but I can't start the relevant containers, because they have no permission to read/write on the device. I figured that adding the ...
0
votes
1
answer
101
views
Difference between './file' and 'sh file'
On macOS, in the zsh terminal, I ran the following commands:
cd /tmp
mkdir newdir
cd newdir
touch file1
./file1
The last command returned
zsh: permission denied: ./file1
But running
sh file1
executed ...
- 3
0
votes
0
answers
183
views
Linux user namespaces mapping issue - root without permission
I am trying to create a user namespace using unshare. Everything works fine when I map the parent user 'kevin' to the 'root' user in the new namespace:
kevin@raspberrypi:~/test $ ls -lah
total 8.0K
...
- 33
0
votes
0
answers
87
views
Very weird linuxbrew installation issue
I am installing linuxbrew in a linux machine. I typed
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
in the console. However it says
==> /...
- 1
0
votes
0
answers
70
views
How did this usage of chmod break sudo access?
In many other topics, I have seen people breaking their sudo access with commands such as
sudo chmod -R 777 /
and variants. Thinking I was doing it right, I have executed the following commands on a ...
- 151
1
vote
0
answers
91
views
Docker container unable to write to removable drive
I currently am running Ubuntu Jammy and have a docker container that needs to write to two external drives that were automatically mounted to /media/MYUSER/MYDRIVE while both are mounted correctly and ...
- 21
1
vote
1
answer
422
views
chmod setuid giving operation not permission even though the I am the owner
shivanshu@<host> ls -l hello.sh
-rw-r-xr-x 1 shivanshu users 63 Sep 7 17:34 hello.sh
So I am clearly the owner of the file. I am able to change normal permissions like r, w, x using chmod ...
2
votes
1
answer
1k
views
rsync permission denied in www subfolder
I need to allow a specific user to download files from my web server. The files will be in a specific directory and I don't want the downloader to read, write or do anything outside of that directory....
- 123
1
vote
2
answers
217
views
Cygwin weird behavior on security permissions
I'm using Cygwin to run periodic backups, for example I do:
cp -a "$(cygpath C:\Users\S\Documents)" "$BU_FOLDER"
But I've noticed the commands that create folders or files such as ...
- 1,594
0
votes
1
answer
198
views
"Permission Denied" using RCS commands (ci and co) as root
I've su'd into our company server as the root user (verified with id, I show up as user 0). I'm trying to use the Revision Control System to check in and check out files, but even as root, I'm getting ...
- 3
0
votes
1
answer
251
views
Protect dot-directories in home, i.e. sticky bit but ignore parent ownership?
Obviously, I own my home directory. But this is a problem if I want to protect some of its children (in particular the dot-folders) with a sticky bit from accidents. Because the sticky bit on my home ...
- 127
0
votes
1
answer
84
views
Primary user group for Linux desktop applications
My user has several groups assigned (e.g. group_a and group_b). By default, the order is:
$ groups
> group_b group_a
In order to assign the right primary group (for file access rights etc.), I ...
- 1
0
votes
1
answer
2k
views
Linux RHEL 7 - Ansible - Execute command in shell is normal but got file not found/permission denied when run via script
I have an Ansible body as follow
- name: install
command: sh /installScript.sh
args:
chdir: /home/cust/
then I execute my playbook using this
ansible-playbook -i my_inventory....
- 15
0
votes
0
answers
91
views
Why do permissions change randomly when mounting via 9p method?
The mounting is working perfectly fine. I mount the external share by using fstab with the following config:
data /home/data 9p trans=virtio,version=9p2000.L,_netdev,rw,uid=...
- 1
0
votes
0
answers
271
views
How to install and use docker in the same gitlab CI step?
I use a gitlab-runner with a custom executor which creates and destroys virtual machines on KVM hypervisor. The installation and configuration are very similar to this example: https://docs.gitlab.com/...
- 131
0
votes
2
answers
2k
views
SSH-Connection "Permission denied" after change of IP-Addresses
a couple of hours ago I changed the IP-Address of my Windows-PC and my Raspberry Pi. Up until then I was able to connect to the Pi via SSH without any problems. Now, when I try to connect, I get the ...
user1819753
1
vote
1
answer
522
views
Errors running pppd inside a docker container
I have a docker container that I'm trying to run pppd inside of. The host kernel has CONFIG_PPP=y. I'm setting up the ppp device like this:
mkdir /run/container/dev
mknod /run/container/dev c 108 0
....
- 545
6
votes
2
answers
14k
views
How to mount a public windows share in linux
This is more a Windows configuration question I think.
Goal: To access Windows 10 public shares from Linux.
In this context: "server" is a single simple standalone Windows 10 machine, and &...
- 8,821
0
votes
1
answer
1k
views
Unable to connect to server as root via ssh
I want to use remote explorer in VS Code on Windows to access a server from Ubuntu.
Entering a password all the time is annoying, so I tried generating an ssh key using ssh-keygen. The key works fine ...
- 3
2
votes
1
answer
453
views
Change default umask for KDE
I am attempting to change the default permissions assigned to a file by KDE. I would like to change the umask to 0027 so that the files are created with 750 for the permissions by default instead of ...
- 21
1
vote
0
answers
419
views
Ffmpeg No such file or directory creating hls output
I am using ffmpeg to create a hls live stream with the following command
ffmpeg -i "rtmp://domain.com/stream/6" -c:v copy -c:a copy -f hls -y -preset superfast -hls_segment_type mpegts -...
- 13
1
vote
1
answer
701
views
Make docker running from usb storage
I try to store my Docker config, images, containers, etc. on a external storage. Following this tutorial
https://www.howtogeek.com/devops/how-to-store-docker-images-and-containers-on-an-external-drive/...
- 43
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votes
3
answers
457
views
How to backup a multi user linux file server over a network, using rsync or similar
My first post on here.
I am trying to backup all data files from one server to another.
The data can be owned by several users or by reserved nologin users.
I am trying to create a remote mirror of ...
- 1
1
vote
1
answer
2k
views
Permission Denied error when trying to run my app as a service with systemd
I wanna run an app as a service by an unprivileged user in Ubuntu. Following is the command to create the user:
sudo groupadd -r mygroup
sudo useradd -r -s /bin/false -g mygroup myuser
sudo chown -R ...
- 111
0
votes
0
answers
42
views
How to start an external program on the Linux computer on which WWW-PHP is running, from non-CLI PHP?
I used to use Windows, with nginx and PHP. A localhost-only webserver for my own use. In my web "control panel", I had various very time-saving shortcuts. For example, I was able to click on ...
- 13
-1
votes
2
answers
59
views
Management of authorizations and access permissions [closed]
In our company, we use several systems, all unrelated to each other. For example, we use online systems like a CRM system, a PasswordManager, Microsoft 365, but also internal systems like a NAS, and a ...
- 107
0
votes
2
answers
473
views
Linux system not booting after chown of the root directory `/`
Recently I was unable to paste a video file from download to one of my directories. It was giving error related to permission so I changed the owner of / to myself with
sudo chown -R pranav .
Now it ...
- 9
0
votes
1
answer
155
views
How to securely permission SSH keys on my mac so they require sudo access to both use and copy
I would like to set the permissions/owner settings for the SSH keys so they require sudo access to both use and copy. This would just be an additional security step if someone were to steal my laptop ...
- 131