i'm trying to use cronitor (a server that monitors you cron jobs) on my raspberry pi zero.
The installation process for cronitor given in the doc fails when I run the last line:
# Install CronitorCLI
curl -sOL https://cronitor.io/dl/cronitor-stable-linux-amd64.tgz
sudo tar xvf cronitor-stable-linux-amd64.tgz -C /usr/bin/
sudo cronitor configure --api-key [[[my private key here]]]
I get this error
/usr/bin/cronitor: 2: /usr/bin/cronitor: Syntax error: Unterminated
quoted string
I guess this is caused by the incompatibility of the amd64 binary for raspberry? Is there another way to install this? Thanks
note: tested on raspberry pi zero and 4
You probably already got an answer or given up.
Anyway for future reference:
Yes, the package you are trying to install is amd64, you just need to download the correct architecture one.
In the release section you can find the ARM package, it works fine on Raspi
https://github.com/cronitorio/cronitor-cli/releases/tag/28.7
Related
I need to control some DC motors using PWM. I have been trying to use the bcm2835 library, but I need root access to run my program. I need to avoid this, as this program is part of a ROS package, which gives problems if run as root. I have tried to follow the instructions that appear in the section "Running as root", but I haven't been successful. I have done the following.
First, I have installed libcap2 and libcap-dev and added my user to the kmem group.
sudo apt-get install libcap2 libcap-dev
sudo adduser ubuntu kmem
Then, I have installed the version latest version of bcm2835 library.
wget http://www.airspayce.com/mikem/bcm2835/bcm2835-1.67.tar.gz
tar zxvf bcm2835-1.67.tar.gz
cd bcm2835-1.67
./configure
make
sudo make check
sudo make install
After that, I uncommented the #define BCM2835_HAVE_LIBCAP line in bcm2835.h, which I found in /usr/local/include/.
I allowed write access to /dev/mem by members of kmem group.
echo 'SUBSYSTEM=="mem", KERNEL=="mem", GROUP="kmem", MODE="0660"' | sudo tee /etc/udev/rules.d/98-mem.rules
sudo reboot
And finally, I compiled my program (called l298n) and run the following command.
sudo setcap cap_sys_rawio+ep l298n
After doing all this, my program is still not able to provide PWM control unless I run it as root.
Have I done anything wrong? Is there any other way around this? As far as I know, other libraries would run into the same problem, as it depends on the access level of /dev/mem.
I am running Ubuntu 20.04 LTS in a Raspberry Pi 3B+.
What you did wrong:
You edited the wrong bcm2835.h, you need to edit bcm2835.h where ever you unpacked bcm2835-1.67.tar.gz, not /usr/local/include.
You didn't recompile the library to actually have the added feature in it.
Also, if you're just accessing the GPIO pins and don't need non-root access to /dev/mem then there's no need to do anything more than adding access rights to /dev/gpiomem to your non-root user.
Have you tried version 68 already ?
There where made some changings concerning 'BCM2835_HAVE_LIBCAP'.
I'm trying to build a script for linux to help me each time I install linux from scratch.
The Script have to 1.- Add repositories 2.- Install software from those repositories.
Adding repositories are not the problem, the problem is when i try to install software from this repo.
For the Repo:
sudo add-apt-repository -y ppa:webupd8team/java
After that, the script should make an update, so:
sudo apt-get update
It looks simple, but is not, because I receive an error:
The command Update could not be found.
And so on the rest of the softwares
apt-get -y install oracle-java8-installer
The package oracle-java8-installer couldn't be found..
I really don't know what should I do, nothing looks to work, I gave full rigths to the file and so on... always the same error.
But if I run the command apt-get install direct from the terminal, works without problem..
Any help?
actually I wrote a script in windows to use it in future Linux installations, for some reasons it doesn't work as I want it. Thinking it was a command or misspelled words, I search for a solution, wich didn't help anyways.
Debugging my script in a virtual Machine, I found that the script was giving some random errors like '/r' doesn't support and like that. Really weird because after searching in my script for that line code I didn't find it.
With that in mind, I search again for those errors, and found that for some reasons, if you write your code in a Windows maschine, it save it in a crlf type, wich in a Linux system is interpreted really wrong.
A solution of some users was converting the type from CRLF to LF, wich in linux is using the command dos2unix.
dos2unix filename.sh
After making that and runing my script again everything works perfectly.
I'm not a coder (just wanted to get that out there). I read an article about creating a silent doorbell (I have a dog that's insane).
https://github.com/initialstate/silent-doorbell/wiki/Part-2.-Finding-the-Button's-Address
I'm relatively computer literate. I followed the instructions for windows and download node.js. The instructions say to open a node.js command prompt and put in the following command:
sudo apt-get install npm
sudo apt-get install libpcap-dev
npm install node-dash-button
the problem i'm having is 1) I'm getting an error saying "apt-get" is not recognized as an internal or external command operable program or batch file.
Reiterating that I am no nowhere near as sophisticated as the users i've seen on here and am just a guy trying to keep the baby sleeping b/c the dog can't shut up - is anyone able to help so I can then go to the next step of instructions?
Thanks so much in advance.
Brad
sudo apt-get is a linux packet manage, so you wouldn't want to do this on windows. As they have mentioned raspberry-pi's I gather that they have made the assumption that you would be on linux.
If you ran that command in a linux terminal it would install the preqequisites and then install node-dash-button in node.
Try just running the nodejs packet manager part:
npm install node-dash-button
The rest of that line is not node or windows.
Hopefully this will get you to the next stage :)
The whole tutorial asumes you being on a Linux/Unix system.
If you solve this issue you will run into the next if you don't know what the commands mean and how to translate them to windows.
For example
sudo node bin/findbutton
is a linux/unix command as well (which is the next step in your tutorial).
So i strongly suggest setting up a VM with linux (debian should do).
I wanted to install msttfonts on CentOS 7. Following this guide everything goes fine, until I got to run the command:
# rpmbuild -bb msttcorefonts-2.5-1.spec
The system then throws this message:
cabextract is needed by msttcorefonts-2.0-1.noarch
It is pretty obvious that I've to install cabextract, so I did. By Downloading source from here, extracting, and then ./config... make... make install... (you know guys: all the routine). And I confirm the installation was successful with
# cabextract --version
Which answers with
cabextract version 1.6
So, I go back with my command rpmbuild... But the system stills answer me
cabextract is needed by msttcorefonts-2.0-1.noarch
And now, the questions:
What I'm doing wrong? Do I need to reboot the server? Is there a kind of command to tell the server "hey! this cabextract thing is already installed"?
... and well, while I was writting this question, I could resolve it thanks to this post. So I just leave this question just for further reference.
Thanks in advance.
You need to install the cabextract package (by running yum install cabextract).
The message you are seeing is a dependency error: the msttcorefonts-2.5-1.spec file lists a dependency on cabextract, but because you have installed it from source there is no information about it in the local packages database.
I'm trying to run the time command for a file on a virtual machine running Fedora 19 64-bit and I get the message "/usr/bin/time: No such file or directory". I tried googling, but it appears it's something that I should already have. How do I get this on my computer?
For those on a raspberry pi or similar debian-based distributions, I found that I could install the package time (sudo apt install time) to obtain access to the time command.
Edit: For Fedora-based systems, the package name might be different. Try a dnf search time, followed by a sudo dnf install {package_name}. I don't have a Fedora machine immediately to hand to get the exact package name from.
bash/zsh/modern shells usually implement a basic time command as a builtin. So it won't exist on the filesystem, but time mycommand should work.
If you want the "proper" time command (with more options eg: -l/-v), then you'll need to install it via apt/yum/etc. You'll need to run it as /usr/bin/time mycommand so the shell-builtin doesn't get invoked.
It might be in other locations. I'd start by typing:
which time
This command will give you the path to time, if it's anywhere in your path.
If you need to build it yourself, you can get the source here:
http://directory.fsf.org/wiki/Time