Questions tagged [permissions]

Permissions grant certain abilities - read, write, or execute a file - on a user level. Unset permissions result in the corresponding rights being denied. Questions address issues with permission settings.

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Cannot change permission of a mounted external HDD due to rpi-first-boot-wizard user [closed]

I mounted an external hdd sudo mount into /mnt/edisk on my raspberry pi. If I check ownership, strangely I see this: drwxr-xr-x 19 rpi-first-boot-wizard rpi-first-boot-wizard 128K May 10 17:44 edisk I ...
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How to edit the /etc/shadow file in the SD card from another computer?

I have a Raspberry Pi for which I forgot the password. I want to do this to get access. So I removed the SD card and now have it in another machine (running Ubuntu). I can navigate to /media/...
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-1 votes
3 answers
66 views

How can I write enable the /boot folder so I can easily share files between my PC and my Pi?

If I put the Pi SD card in my windows PC, its easy to transfer files to the boot drive. These files can seen in the Pi in the /boot folder. However I want to transfer files back to the PC from the Pi ...
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-1 votes
2 answers
116 views

how to give a program permission to run without sudo?

I have a program, I wrote called "enc".The program is written in C, and reads GPIO pins, and thus requires sudo to run. but I don't want it to require sudo or a password to run. I tried sudo ...
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Permissions issue using hard drive [closed]

I am new to using raspberry pi. I've wrote a script in python that takes images and stores them in a connected hard drive, in a directory that is created by the script. When trying to open the files ...
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1 answer
184 views

Motion does not have write access permission to target directory

Up until May 2021, motion was working successfully on my Raspberry Pi 4. After May 2021, when motion is running and my web camera is enabled, as soon as it detects any motion, the camera disables ...
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1 answer
315 views

I accidentally removed read, write and execute permissions from the root ("/") directory

I hope you have a solution for that: I wanted to remove permissions to a specific folder with: sudo chmod -rwx ./ But instead I had executed: sudo chmod -rwx / so I had removed all permissions to ...
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Operation not permitted when using sudo via homebridge

I updated homebridge yesterday and now none of my stereo commands work. I use the homebridge-commander plugin to run a set of commands that use a repo of mine called pi-bose, forked from pi-rc. It ...
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404 Not found - weewx and lighttpd

I am running Dietpi on Raspberry Pi 3B+. Installed weewx via apt-get after enabling lighttpd. I get a 404 Not found error. Apparently, I need to set some permissions to allow weewx to write to /var/...
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  • 101
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'on_picture_save' triggered script won't execute 'sftp' nor 'sudo -u' commands

My goal is to transfer to a distant raspberry pi the stream of snapshots acquired through 'motion' software. I am using 'sftp' in the following test script: (test-script.sh) #!/bin/bash cp $1 /tmp/...
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1 vote
1 answer
210 views

WS281x library cannot access /dev/mem without root

I get this error from the rpi_ws281x library when trying to run as user pi (this is a java wrapper around the library): 16:43:59.060 [main] INFO com.github.mbelling.ws281x.Ws281xLedStrip - LEDs count:...
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  • 502
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361 views

How to create a linux user group that grants access to USB devices?

How can I create a new user group that will grant the group members access to USB devices connected to the system? a.) to all connected USB devices? b.) only to USB devices with VID=0x1234? c.) only ...
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1 answer
62 views

OpenCV can't capture frames on production server (Nginx + uWSGI) on Raspberry Pi 4

I'm building a production server on Raspberry Pi 4. Web app is written in Django. I used uWSGI as an application server and Nginx as a reverse proxy. I followed many tips from Digital Ocean. One of ...
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2 answers
511 views

Block /etc/wpa_supplicant/wpa_supplicant.conf from non root users but still allow all users to connect to that ssid

How do i block /etc/wpa_supplicant/wpa_supplicant.conf from non root users but still allow all users to connect to that ssid? For example if I have a hidden network called xyz with password 1234secure....
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new pi & new hdd ext4 messes up permissions and owner on reboot

I have a new hdd powered with external power plug It is attached to the usb 3.0 (new Pi from shop also) hdd is ext4 problem: I mount the hdd on the pi, fine. then I write some files, fine. then I ...
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340 views

Which user is used to authenticate with the NFS server when mounting in fstab?

I'm trying to wrap my head around connecting my Pi2B to a NAS using NFS. In this answer, @Ingo wrote. As customary then you mount to nfs shares with entries in /etc/fstab. This line in your /etc/...
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126 views

NFS client access denied

I created a basic NFS share on my RPi4 following the RaspberryPi doc and PiMyLife tutorial. First, installed nfs-kernel sudo apt-get install nfs-kernel-server -y then, set permissions sudo chown -R ...
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138 views

pi samba share permissions

So my current project is to have a full node bitcoin core on my pi4 currently following this guide: Bitcoin node guide In this guide they reference an external hdd for the blockchain as currently the ...
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1 answer
270 views

how to enable pcmanfm to copy paste in directories that say "permission denied" [closed]

I need to enable pcmanfm (aka file explorer) to copy and paste from all directories for programing purposes. Can anyone tell me how to do this?
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2 answers
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Error copying files permission denied | using the sudo command

I am trying to install the pipedream cli onto my pi and when I run the installer script as sudo I am getting a permission error saying it can't copy any files into /usr/local/bin/pd The error I am ...
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1k views

PermissionError: Permission denied

I have a python program that imports gopigo. If I run the program under my user it works fine. I need to invoke it from shairport-sync service. when I do that I get the following error: Jul 27 19:35:...
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When uploading from WinSCP: How to mount an external samba drive to give all users write and file rename permissions? [closed]

I have a raspberry pi behind a Fritzbox router that also doubles as a nas with a drive connected via USB. I have mounted the nas to the pi's "/media/fritzbox-usb" directory and would like ...
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2 answers
749 views

How to mount (and keep) a NTFS HDD with RW permissions

I have the Raspberry Pi 4 Model B, I've installed Raspbian OS using NOOBS. Everything works fine until I plug in my NTFS HDD via USB, the hard drive is detected and mounted automatically, but with RO ...
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3 answers
355 views

Configure Pi4 to create files in root of mounted Samba share

I cannot create files and directories of the root folder of a mounted Samba share on my Pi4. I am 98% certain that this is a client-side issue with the Pi4 and not a server configuration problem for ...
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  • 101
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1 answer
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Rasbian WebDav-Client davfs2: Create folder successfully, but files won't

Dear specialists :) , I got a lot of help during the last month from this forum but this time I can't find the right thread. Problem: I had connected a WebDav-Connection to the https://dav.mailbox....
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1 answer
1k views

How to record to NAS from TVHeadend running on Raspberry Pi 4

Sorry if I unintentionally transgress any forum etiquette - in all my time looking for answers to questions I have been able to get there through searching and have never actually had to post a ...
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0 votes
1 answer
693 views

Unable to copy to SMB from MacOS

I'm in the process of setting up a shared folder on my Raspberry Pi and am having a hard time figuring out the issue with some of my permissions. I set up my smb.conf file as such: [content] Comment =...
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2 answers
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Unwritable file

I'm trying to edit the terminal on my Pi and whenever I edit my terminal with the command nano /boot/config.txt this comes up: nano /boot/config.txt unwritable Whenever I try to exit and try to ...
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1 answer
1k views

Permission denied on executing script

I can't execute a script. I'm struggling with this. OS version and hardware model I'm on Raspbian GNU/Linux 10, Raspberry Pi 3 Model B. Devices When I call lsblk I get: $ lsblk NAME MAJ:...
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165 views

ssh Permission denied // RPi 3 Model A+ macOS Mojave

I'm trying to access my RPi 3 Model A+ from my mac (Mojave) through ssh. They're both connected to a 5GHz wifi. From the mac terminal, I type the RPi ip address, then the default password raspberry , ...
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1 answer
2k views

PIGPIO without sudo

I am working on setting up an automated deployment of an executable using the PIGPIO C bindings to a Pi Zero. I copy the executable to the pi (into a directory on pi user's desktop) as expected, but ...
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10 votes
3 answers
7k views

Sudo permissions disaster

I just got a Pi-4. I'm not sure if I did something wrong while setting it up, but after getting it running I noticed that sudo commands required no passwords. I tried to change this, following some ...
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2 votes
0 answers
132 views

User does not have permissions to directory

My raspberry 3 is running amule using amule user, but I cant set the directories I want for incomings and temp files in a pendrive. Each time it goes back to the default directories. I did sudo chmod ...
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4 votes
1 answer
8k views

Permission denied to access `/media/pi` folder

I connected a HDD to USB port, then Raspbian allow me to mount the unit. So I can access to logical drive with this path: /media/pi/PICTURES-HDD. Then I installed a DLNA server (serviio) to view the ...
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1 vote
1 answer
426 views

Changing ownership of root directory effects

Plugged in a the sd card of Raspberry Pi to my computer, I wanted to move files to the /root directory. Since it is owned by root user and permissions of drwx------. I had to do chown -R myuser:myuser ...
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  • 147
1 vote
2 answers
2k views

Can't connect to RPi4 from Windows 10 (SSH,RDP, VNC, HTML)

I recently was attempting to connect to my RPi via SSH & Remote Desktop. After several failed attempts from accessing it from windows, I attempted to access it from my Android phone on the same ...
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2 votes
1 answer
451 views

Unable to set GPIO even as root

$ echo "1" > /sys/class/gpio/gpio17/value echo: write error: Operation not permitted Doing sudo -i to log in as root ends up the same. $ ls -ll /sys/class/gpio/gpio17/ -rwxrwx--- 1 root gpio 4096 ...
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1 vote
1 answer
352 views

Run forever task as root in init.d script on startup

I'm trying to start a nodeJS Server on Raspbian on startup. Everything works fine with this script: #!/bin/sh #/etc/init.d/myService ### BEGIN INIT INFO # Provides: myService # Required-...
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  • 115
1 vote
1 answer
298 views

How can I require root privileges for invoking 'gpio' from WiringPi?

I removed my user from the gpio group, logged out and back in. I can still run e.g. gpio write 25 1. I see from this answer how the memory mapping and permissions changed between Jessie and Stretch, ...
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0 votes
1 answer
408 views

Unable to create/delete files/folders from external hdd enclosure

I'm trying to write files to an external hard drive in an enclosure holding 4 drives, thru usb. It won't let me do anything with the drive, saying "permission denied", and I can't format it. I've got ...
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0 votes
0 answers
1k views

php file not executing python script when called through browser

I have an apache2 webserver running on the pi. I have a php file that uses exec() to run a python script. Everything works well from the command line. when loaded through the browser, the exec() ...
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2 votes
2 answers
8k views

Permission denied using Serial

I'm using some XBee to build a mesh network and everything is working, BUT only if I run the code using sudo. Now that the code is "Finished" i want to remove this need, because i know that it isn't ...
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1 vote
1 answer
586 views

Allowing a venv instance of Python access to I2C

I'm trying to run a python script using the adafruit_bme280 library to read a couple of sensors and display the data on a flask-generated page. I've gotten it to work outside of a venv virtual ...
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0 votes
1 answer
972 views

Permission denied error when using apt and apt-get as root on raspbian

I keep getting an error when I use apt or apt-get as a root user or using sudo with the default pi account. Ign:1 http://raspbian.raspberrypi.org/raspbian stretch InRelease Ign:2 http://archive....
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1 vote
1 answer
19k views

Error reading lock file /etc/.rc.local.swp: Not enough data read

I was able to access rc.local just a little bit ago and now it wont let me. I cant even delete the swp file due to permission issues. Im not sure where to go from here, the error i get when opening ...
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-1 votes
2 answers
2k views

Raspberry Pi Desktop, Guest Additions: Access denied under root

I've been trying to install Guest Additions for Raspbian Desktop on VirtualBox hosted on Linux. The script won't run even under root. How is it possible?
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1 vote
1 answer
118 views

Why is /boot/config.txt executable?

FYI, I installed the R-PI minimal image with dd myself onto an sd card I was messing with the boot config when I realized that this file was set as executable. Looking at the config, I don't see why ...
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0 votes
0 answers
107 views

Trying to configure two USB drives for Samba server, permissions allow access to one but not the other on PC?

On my raspberry pi 3 that has Samba and Ntfs-3g running Raspian I have two USB drives mounted to two folders (from lsblk) Then I have added the following code to the bottom of the samba configure ...
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122 views

Permision denied error using paho mqtt and Adafruit 32x32 led matrix

I am writing to you because I have the following problem: I have generated a code that allows controlling a 32x32 RGB led matrix through mqtt (AWS IoTCore) using a RPi Zero W with an Adafruit RGB ...
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0 votes
0 answers
189 views

FTP file upload through Dreamweaver

Trying to edit files over FTP in Adobe Dreamweaver 2019. I've set the permissions to 755 in /var/www/html/ using -Rfv. Now, whenever I go to save a file I am greeted with this: An FTP error occurred -...
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