I have a Raspberry Pi 3 running Raspian Lite
pi#raspberrypi:~ $ uname -a
Linux raspberrypi 4.14.79-v7+ #1159 SMP Sun Nov 4 17:50:20 GMT 2018 armv7l GNU/Linux
I am following this tutorial, setting up an Adafruit Fona 808 for GSM/GPS connections. I've installed screen and pppd as instructed.
pi#raspberrypi:~ $ sudo apt-get install screen ppp
Reading package lists... Done
Building dependency tree
Reading state information... Done
ppp is already the newest version (2.4.7-1+4).
screen is already the newest version (4.5.0-6).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
The problem is that when I start screen and enter 'AT' I get no response.
I start the screen session like so:
pi#raspberrypi:~ $ sudo screen /dev/serial0 115200
I see a black screen with blinking cursor. I enter 'AT' on my keyboard but no characters appear on the screen. I press enter, still nothing appears.
I'm using screen version 4.05.00
pi#raspberrypi:~ $ screen --version
Screen version 4.05.00 (GNU) 10-Dec-16
I am not sure how to troubleshoot this issue.
Any suggestions?
Running the following:
pi#raspberrypi:~ $ sudo ls -l /dev/
I noticed that serial0 is pointed at ttyS0
lrwxrwxrwx 1 root root 5 Feb 3 23:49 serial0 -> ttyS0
So, running the following worked:
pi#raspberrypi:~ $ sudo screen /dev/ttyS0 115200
In screen:
AT
OK
Related
I've been trying to get this to work by following the answers in these questions:
How to uninstall postgresql on my Mac (running Snow Leopard)
Completely uninstall PostgreSQL 9.0.4 from Mac OSX Lion?
...but they're not working. So, here's what I have tried instead/in addition...
.
me#myMac:~$ cd /Library/PostgreSQL/14
me#myMac:/Library/PostgreSQL/14$ ./uninstall-postgresql.app/
-bash: ./uninstall-postgresql.app/: is a directory
me#myMac:/Library/PostgreSQL/14$ open ./uninstall-postgresql.app/
LSOpenURLsWithRole() failed with error -10810 for the file /Library/PostgreSQL/14/uninstall-postgresql.app.
me#myMac:/Library/PostgreSQL/14$ open -a ./uninstall-postgresql.app/
Unable to find application named './uninstall-postgresql.app/'
me#myMac:/Library/PostgreSQL/14$ open -a uninstall-postgresql.app/
Unable to find application named 'uninstall-postgresql.app/'
me#myMac:/Library/PostgreSQL/14$ sudo open uninstall-postgresql.app/
Password:
LSOpenURLsWithRole() failed with error -10810 for the file /Library/PostgreSQL/14/uninstall-postgresql.app.
me#myMac:/Library/PostgreSQL/14$ cd /Library/PostgreSQL/14/uninstall-postgresql.app/Contents/MacOS/
me#myMac:/Library/PostgreSQL/14/uninstall-postgresql.app/Contents/MacOS$ install
install install_name_tool installvst
install-info installer
me#myMac:/Library/PostgreSQL/14/uninstall-postgresql.app/Contents/MacOS$ installer
Usage: installer [-help] [-dominfo] [-volinfo] [-pkginfo] [-allowUntrusted] [-dumplog]
[-verbose | -verboseR] [-vers] [-config] [-plist]
[-file <pathToFile>] [-lang <ISOLanguageCode>] [-listiso]
[-showChoicesXML] [-applyChoiceChangesXML <pathToFile>]
[-showChoicesAfterApplyingChangesXML <pathtoFile>]
-pkg <pathToPackage>
-target <[DomainKey|MountPoint]>
me#myMac:/Library/PostgreSQL/14/uninstall-postgresql.app/Contents/MacOS$ installbuilder.sh
-bash: installbuilder.sh: command not found
SINCE I couldn't run/find installbuilder.sh using the following command...
me#myMac:/Library/PostgreSQL/14/uninstall-postgresql.app/Contents/MacOS$ installbuilder.sh
-bash: installbuilder.sh: command not found
...as the other answers in my OP suggest, I went on to try the steps below:
me#myMac:/Library/PostgreSQL/14/uninstall-postgresql.app/Contents/MacOS$ ls -la
total 3112
drwxr-xr-x 5 root daemon 160 Sep 23 10:48 ./
drwxr-xr-x 5 root daemon 160 Sep 23 09:18 ../
-rwxr-xr-x 1 root daemon 673 Sep 23 10:48 installbuilder.sh*
-rwxr-xr-x 1 root daemon 1449456 Sep 23 10:07 osx-x86_64*
-rwxr-xr-x 1 root daemon 135216 Jul 14 11:21 uninstall-postgresql*
me#myMac:/Library/PostgreSQL/14/uninstall-postgresql.app/Contents/MacOS$ ./installbuilder.sh
Unable to initialize installer
me#myMac:/Library/PostgreSQL/14/uninstall-postgresql.app/Contents/MacOS$ ./uninstall-postgresql
Usage: ./uninstall-postgresql installerName [args ...]
me#myMac:/Library/PostgreSQL/14/uninstall-postgresql.app/Contents/MacOS$ ./uninstall-postgresql osx-x86_64
and VOILA!!!
This launched the uninstall GUI
Choose UNINSTALL ALL / REMOVE ENTIRE INSTALLATION
The uninstaller will do its thing and then prompt you with this:
At this point you'll want to follow the steps provided in this PREVIOUS StackOverflow ANSWER - steps 3 through 6 of #user1181328's answer. I'll list them here for convenience:
Remove the PostgreSQL and data folders. The Wizard will notify you that these were not removed.
sudo rm -rf /Library/PostgreSQL
Remove the ini file:
sudo rm /etc/postgres-reg.ini
Remove the PostgreSQL user:
using System Preferences -> Users & Groups.
Unlock the settings panel by clicking on the padlock and entering your password.
Select the PostgreSQL user and click on the minus button.
Restore your shared memory settings:
sudo rm /etc/sysctl.conf
That should be all! The uninstall wizard would have removed all icons and start-up applications files so you don't have to worry about those.
These are my raspberry pi OS, Kernel version and archtecture configs
Operating System: Raspbian GNU/Linux 10 (buster)
Kernel: Linux 5.10.52-v7l+
Architecture: arm
When I try to run their script(https://brew.sh/):
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
I get
Homebrew on Linux is only supported on Intel processors!
and, whenever I try to run a brew command, I get:
-bash: brew: command not found
Homebrew for linux is called Linuxbrew. And the installation command that you need is:
sh -c "$(curl -fsSL https://raw.githubusercontent.com/Linuxbrew/install/master/install.sh)"
Please check out this link to get more info about it: https://github.com/Linuxbrew/brew
Also notice that while Linuxbrew can run on Raspberry Pi (32-bit ARM), no binary packages are available for it.
Here are my two cents on installing brew on RaspberryPi Zero W and RaspberryPi 3+ (RaspberryPi OS, bullseye).
$ # Install dependencies
$ sudo apt update -y && sudo apt upgrade -y
$ sudo apt install git
$ # Install rbenv and Ruby 2.6.8 (It takes 30-90 min.)
$ # As of 2022/06/09, ARM processors require Ruby 2.6.8.
$ # Check the gist below what is doing as well.
$ bash <(curl -sL https://gist.github.com/KEINOS/7101f542be23e5048198e2a27c3cfda8/raw/install_ruby_rpi.sh)
$ source ~/.bashrc
$ # Smoke test Ruby
$ ruby --version
ruby 2.6.8p205 (2021-07-07 revision 67951) [armv6l-linux-eabihf]
$ # Clone homebrew repo under /opt
$ sudo git clone --depth=1 https://github.com/Homebrew/brew /opt/homebrew
$ # Setup homebrew
$ sudo chown -R $(whoami) /opt/homebrew
$ echo 'eval "$(/opt/homebrew/bin/brew shellenv)"' >> ~/.bashrc
$ source ~/.bashrc
$ # Full update to tap homebrew/core (It takes 30-90 min.)
$ brew update --force --verbose
$ # Smoke test brew
$ brew --version
Homebrew 3.5.1
Homebrew/homebrew-core (git revision 1d9fb5dd1e6; last commit 2022-06-09)
$ # Install "hello world" package which supports both 32bit and 64 bit ARM.
$ # - Source: https://github.com/KEINOS/Hello-Cobra
$ # - Formula: https://github.com/KEINOS/homebrew-Hello-Cobra
$ brew install KEINOS/Hello-Cobra/hello-cobra
***snip***
$ hello-cobra hello world
Hello, world!
$ # Env info of RaspberryPi Zero W
$ more /proc/device-tree/model
Raspberry Pi Zero W Rev 1.1
$ cat /etc/debian_version
11.3
$ uname -a
Linux rpi-zero 5.10.92+ #1514 Mon Jan 17 17:35:21 GMT 2022 armv6l GNU/Linux
$ whoami
pi
$ echo $SHELL
/bin/bash
$ # Env info of RaspberryPi 3+
$ more /proc/device-tree/model
Raspberry Pi 3 Model B Rev 1.2
$ cat /etc/debian_version
11.3
$ uname -a
Linux rpi-3pls 5.10.92-v8+ #1514 SMP PREEMPT Mon Jan 17 17:39:38 GMT 2022 aarch64 GNU/Linux
$ whoami
pi
$ echo $SHELL
/bin/bash
Note that everything for brew is slow on ARM6. Patience is required not only when setting up linuxbrew, but also when installing packages using brew.
However, once the package has been successfully installed, it should work as fast as expected. So, I'd say it is worth trying linuxbrew on the ARM6 and ARM64 architectures.
References
ARM | Homebrew on Linux # docs.brew.sh
Untar anywhere | Installation # docs.brew.sh
How can I check the available version of a package in the repositories? # AskUbuntu.com
Installing Ruby versions | rbenv # GitHub
Raspberry Pi
Homebrew can run on Raspberry Pi (32-bit ARM), but no binary packages
(bottles) are available. Support for Raspberry Pi is on a best-effort
basis. Pull requests are welcome to improve the experience on
Raspberry Pi.
https://docs.brew.sh/Homebrew-on-Linux
Two comments on installing Homebrew on Raspberry Pi 400 Rev 1.0, Raspbian Debian 11.5.
For an unknown reason Homebrew installer requires exactly ruby version 2.6.8. My Pi has ruby 2.7.4 but that was not accepted
After installing 2.6.8 using the above hint (ruby-build available from the regular repository does not offer it, the next after 2.6.6 being 2.7.0), the brew update --force --verbose command was still failing on not finding 2.6.8. It was so because the 'brew' script has the PATH explicitely filtered to the system one, "/usr/bin:/bin:/usr/sbin:/sbin". Only after manually adding the path for ruby 2.6.8 did the update work. NB. the script was overwritten during the process so in order to install any package I had to add the path it again.
Any idea why it is "exactly 2.6.8" and not "2.6.8 or newer"?
I followed instructions to get distro on my Raspberry Pi and got the following:
pi#raspberrypi:~ $ cat /etc/os-release
PRETTY_NAME="Raspbian GNU/Linux 10 (buster)"
NAME="Raspbian GNU/Linux"
VERSION_ID="10"
VERSION="10 (buster)"
VERSION_CODENAME=buster
ID=raspbian
ID_LIKE=debian
How do I extract the distribution from this? Next time someone asks how do I answer?
The content of that file is full of variable so:
source /etc/os-release && echo $PRETTY_NAME
Replace the variable name with the one you are interested of.
You can also use the lsb_release -a command to detect the distribution
i'm trying to install Docker-compose on my Raspberry Pi 3+ which installed Raspbian buster.
I followed instruction on docker.com. After I entered command : sudo curl -L https://github.com/docker/compose/releases/download/1.20.0/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose.
It show a table for downloading
Result
It seems nothing downloaded, just have a file docker-compose saved in /usr/local/bin/docker-compose. When I opened it, it empty. Then I enter command docker-compose -v, it displayed error /usr/local/bin/docker-compose : line 1: Not: command not found.
Anyone have solution?
UPDATE:
Added the following command to my answer to download the LATEST version without specifying any version number at all so the download can be scripted.
curl -L "https://github.com/docker/compose/releases/download/$(curl https://github.com/docker/compose/releases | grep -m1 '<a href="/docker/compose/releases/download/' | grep -o 'v[0-9:].[0-9].[0-9]')/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
It's a bit untidy, but it works. If you have a more elegant way than mine, ping it to me in the comments and I'll update my answer.
Just need to set the perms on the file:
chmod +x /usr/local/bin/docker-compose
Use the file command to validate that you pulled the correct arch for your system.
Intro:
Although docker-compose can be installed from a repo per the accepted answer, apt-cache show docker-compose reveals that as of 20211201 the repo version is only v1.25; about 2 years behind the current v2.1.1 release. In order to take advantage of more modern docker file versions, I needed to get the Github download working.
Short Answer:
The Docker documentation for Docker-Compose is WRONG. They forgot to preface the version number in the command with a "v"; consequently the download fails. Apparently this has been wrong for ages...
Longer Answer:
I ran the below command from the Docker-Compose documentation, and substituted the version "2.1.1" for "1.29.1" per Docker's guidance:
To install a different version of Compose, substitute 1.29.2 with the
version of Compose you want to use.
sudo curl -L "https://github.com/docker/compose/releases/download/2.1.1/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
The resulting download was 9 KB for a 23 MB binary. Clearly the link was bogus. So I went to the root of the address used in the command "https://github.com/docker/compose/releases" and right-clicked on the version of Docker-Compose that I wanted and chose "Copy Link Address"
This revealed the link Docker was telling folks to use didn't have a "v" prefaced before the version number in the https:// address part of the command.
Solution:
Preface a "v" before the version number you want in the link as below and the command executes successfully:
sudo curl -L "https://github.com/docker/compose/releases/download/v2.1.1/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
BTW, I too was downloading docker-compose for a Raspberry Pi using the aarch64 binary for Ubuntu 20.04 LTS. However, the missing "v" fix for the broken download address should work for any platform.
This is because on a raspberry pi the url part of the command results in
https://github.com/docker/compose/releases/download/1.24.1/docker-compose-Linux-armv7l
Looking at the latest stable release at https://github.com/docker/compose/releases/tag/1.24.1 you can see there is no download for the armv7l architecture so the file is empty because there is nothing to download.
Will update answer once I figured out how to install docker-compose on Raspian.
Edit:
Via apt-get. Note: Currently (Nov. 8 2019) this installs version 1.21 which is not the latest available.
sudo apt-get install docker-compose
Via pip3. (Installs latest)
sudo apt-get install python3-pip
sudo pip3 install docker-compose
And then restart your system with
sudo shutdown -r
I use Homestead Version 1.0.1 and Laravel version 5.4.16. I setup the Laravel dusk by reading the documentation.
But, when I run php artisan dusk by ssh to my homestead. I got an error like the following
PHPUnit 5.7.17 by Sebastian Bergmann and contributors.
E 1
/ 1 (100%)
Time: 2.52 minutes, Memory: 10.00MB
There was 1 error:
1) Tests\Browser\ExampleTest::testBasicExample
Facebook\WebDriver\Exception\WebDriverCurlException: Curl error thrown
for http POST to /session with params:
{"desiredCapabilities":{"browserName":"chrome","platform":"ANY","chromeOptions":{"binary":"","args":["no-first-run"]}}}
Operation timed out after 30001 milliseconds with 0 bytes received
Is there anyway to fix this 😊?
Yes, it can be found on the github pages of Dusk. It is a known issue and they are working to update the next homestead box.
The basic issue is that the homestead box has no visual interface and
that dusk runs a real browser, so you have to install a chromedriver
if you want to use it.
But for now this worked for me:
https://github.com/laravel/dusk/issues/50#issuecomment-275155974
Not included in that post but necessary for me:
make sure you have following permission set cd vendor/laravel/dusk/bin; chmod 775 *
Steps from the github post:
First of all, google-chrome is requried to be installed in guest OS:
$ wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add -
$ sudo sh -c 'echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google-chrome.list'
$ sudo apt-get update && sudo apt-get install -y google-chrome-stable
Next thing is xvfb:
$ sudo apt-get install -y xvfb
Try to start ./vendor/laravel/dusk/bin/chromedriver-linux --port=8888. If you have some errors about loading libraries (libnss3.so, libgconf-2.so.4), try this:
$ sudo apt-get install -y libnss3-dev libxi6 libgconf-2-4
When you see
$ ./vendor/laravel/dusk/bin/chromedriver-linux --port=8888
Starting ChromeDriver 2.25.426924 (649f9b868f6783ec9de71c123212b908bf3b232e) on port 8888
Only local connections are allowed.
this means ChromeDriver can be started (so SupportsChrome trait should be able to start it too). You can stop this process for now (Ctrl+C).
Run
$ Xvfb :0 -screen 0 1280x960x24 &
in a separate terminal window.
Also you may want to add your dev domain in guest's /etc/hosts file:
127.0.0.1 domain.dev.
This issue is to add the chromedriver to homestead by default and will
be solved mid April. https://github.com/laravel/homestead/issues/516