315
votes
How can I determine which OS image I am running?
Open Terminal and type:
cat /etc/os-release
This results in the following output on my Raspberry Pi 2...
PRETTY_NAME="Raspbian GNU/Linux 8 (jessie)"
NAME="Raspbian GNU/Linux"
VERSION_ID="8"
VERSION=...
- 3,251
28
votes
How do I prevent the screen from going blank?
The other solutions here did not work for me (fresh Raspbian, boot to GUI). Instead, this worked:
Open up /etc/lightdm/lightdm.conf using your favorite text editor (I prefer nano).
Look for the line #...
- 7,116
27
votes
Accepted
Running a script after an internet connection is established
As @Milliways commented here is where the power of systemd comes to play. There is no need to wait that sequential processed commands are finished. systemd is working parallel (that is what it makes a ...
- 41.9k
24
votes
How can I tell if I am using the hard-float or the soft-float version of Debian/Raspbian?
The accepted answer is correct, but a really simple method is:
dpkg --print-architecture
If your system is using a hard float architecture, you will then see:
armhf
ARM Hard Float. :-)
- 350
23
votes
How can I determine which OS image I am running?
https://github.com/RPi-Distro/pi-gen/releases lists releases of Raspbian since 2016-05-10.
To find your Raspbian distribution image release date (not the /etc/os-release information such as VERSION="...
- 351
19
votes
Accepted
Entrusted Certificates installation
CA certificates are located in /etc/ssl/certs as well as /usr/share/ca-certificates/ and in some cases /usr/local/share/certificates.
In general CA certs should not be manually added to the local ...
- 1,389
17
votes
Prepare for ssh without a screen
Following massive botnet attacks in 2016 due to IoT devices being easily hacked with default passwords, Raspbian once again comes with SSH turned off by default (source).
The fix is pretty easy, you ...
- 298
17
votes
Accepted
Build custom Raspbian OS image from source
I have since learnt that the Raspberry Pi foundation uses this repository for generating their images:
https://github.com/RPi-Distro/pi-gen
This can be modified to create an image as desired.
- 625
14
votes
"Failed to connect to non-global ctrl_ifname" when running wpa_cli reconfigure
This worked for me
sudo nano /etc/network/interfaces
and add the following lines
auto wlan0
iface wlan0 inet manual
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
sudo nano /etc/wpa_supplicant/...
- 241
10
votes
How do I prevent the screen from going blank?
To prevent the screen from going blank try adding consoleblank=0 to the end of the first line of /boot/cmdline.txt
Source
- 221
10
votes
anydesk: error while loading shared libraries libbrcmglesv2.so
The following trick will do it:
sudo apt install libgles-dev libegl-dev
sudo ln -s /usr/lib/arm-linux-gnueabihf/libGLESv2.so /usr/lib/libbrcmGLESv2.so
sudo ln -s /usr/lib/arm-linux-gnueabihf/libEGL.so ...
- 101
9
votes
How to Wake the Raspbery Pi Display Without Disabling The Screensaver
You have to define which display to use first :
export DISPLAY=:0
xset s reset
Hope this helps
- 191
7
votes
Accepted
How do I know if I'm on Debian, Ubuntu or Fedora?
Based on the name HASSbian, you are likely on a Debian derivative.
You can get the name of the distrubution with the following command line command:
cat /etc/*-release
Note this will likely return ...
- 34.6k
7
votes
Accepted
Adding Debian Security Repository GPG key
Get the missing public keys from the Ubuntu keyserver and try if it helps:
rpi ~$ sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys AA8E81B4331F7F50 112695A0E562B32A
Executing: /tmp/apt-...
- 41.9k
7
votes
Accepted
What is the RaspberryPi OS equivelant of "http://packages.ubuntu.com/"?
If you are actually using RpiOS, the URLs are in /etc/sources/sources.[list,list.d]. However, redirection is often used and you won't find everything in one place, so your best bet is to observe what'...
- 58.5k
6
votes
Can I Install Debian 64 bit on RPi 3
Not unless you have a 64 bit version compiled for the ARM architecture. You can't install the AMD64 or x86-64 version as the architecture is different.
Quoting from the Pi Foundation's blog post ...
- 34.6k
6
votes
How to add raspberry pi / raspbian distro specific build-deps to a Debian package
You're correct that you can't add a build-dependency on libraspberrypi-dev to the Debian package, since there is no such package in Debian. You can't even limit the build-dependency to an architecture ...
- 161
6
votes
Accepted
Unable to install mongodb 3.4 on Pi 3
From the tutorial you linked to:
MongoDB only provides packages for 64-bit builds of Debian 7 and 8.
Although the Pi3 has a 64-bit processor, Raspbian is only a 32-bit OS.
Also, see this related ...
- 3,372
6
votes
Accepted
Using debian repositories for Raspberry Pi
First of all update your Raspbian operating system version to get newer packages.
The general answer is no, unless you know exactly what are you doing.
Apparently there are different types of ...
- 593
6
votes
Accepted
Raspberry Pi Desktop, Guest Additions: Access denied under root
8. of the preferred answer here. Not much of an explanation, yet it certainly works.
# sh /media/cdrom0/VBoxLinuxAdditions.run
- 171
6
votes
Accepted
Up-to-date Syncthing on Raspberry Pi
Ok, so I tried the instructions for debian/ubuntu apt install at https://apt.syncthing.net and that worked. There is support for armhf architecture.
Just follow the instruction to install the gpg key ...
- 153
5
votes
Automatically uninstall all non-essential packages
While I fully agree with @goldilocks that being obsessive about the number of installed packages is pointless, there's one useful trick I want to share.
All packages in the system basically fall in ...
- 27.7k
5
votes
How can I tell if I am using the hard-float or the soft-float version of Debian/Raspbian?
Issue the command:
readelf -A $(which dpkg)
On a hard-float (hf) system, you will see this as part of the output:
Tag_ABI_VFP_args: VFP registers
See http://www.cnx-software.com/2013/04/22/how-to-...
- 200
5
votes
Accepted
Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied)
First check if there is a dpkg process running, ps afx|grep dpkg.
If thats the case, kill it with sudo killall dpkg.
Remove the lock file with sudo rm /var/lib/dpkg/lock
That should do the trick.
- 2,726
5
votes
One volume does a *full* fsck every boot, even though it's clean
I found what I believe was the cause, and it now appears to be fixed.
Since this machine has a battery-backed RTC on it, fake-hwclock had been uninstalled long ago. When looking at the dump from '...
- 99
4
votes
How can I connect to a USB serial device?
Download pySerial (https://pypi.python.org/pypi/pyserial)
wget http://pypi.python.org/packages/source/p/pyserial/pyserial-2.7.tar.gz?raw=true -O pyserial-2.7.tar.gz
tar -xzf pyserial-2.7.tar.gz
cd ...
4
votes
Prepare for ssh without a screen
No router + no screen + regular Ethernet cable + RPI 2 + Raspbian Lite 2018-11-13 + Ubuntu 18.10 host
First we must enable the SSH server on the Pi, which is disabled by default for security.
If you ...
4
votes
How do I prevent the screen from going blank?
What worked for me was editing ~/.config/lxsession/LXDE-pi/autostart and commenting out the screensaver, all the other xset commands didn't seem to affect it when it is started here:
@lxpanel --...
- 141
4
votes
noobs reset password Debian
Put your (micro)SD card into a computer
Copy cmdline.txt to cmdline.txt.bak (just to make a backup)
Open cmdline.txt and add this to the end of the line: init=/bin/sh
Put SD card back into Raspberry ...
- 446
4
votes
How to make a distribution bootable on raspberry pi / package migration from 32-bit x86 Debian install?
As I mentioned in chat, this project isn't possible as is.
As with an engine in a vehicle, computer processors can very dramatically. A boat, plane, train, and car all have an engine, designed to ...
- 11.9k
Only top scored, non community-wiki answers of a minimum length are eligible