Raspberry Pi includes numerous Python modules. For a list of the modules, enter sudo pip3 list. Enter the following command to see if a certain module has been loaded: sudo pip3 list grep guizero. If you want to load the module, enter the following: sudo pip3 install guizero. After the command completes, run sudo pip3 list grep guizero to confirm its been loaded.
Github is a global company based in San Francisco, CA, providing a cloud-based hosting platform for software developers worldwide. This greatly simplifies changes and updates to the software by allowing developer access to the code without directly accessing the original source code, allowing them to modify, debug, or add features to the code. Once tested and verified, the code can be merged back into the original source code. Changes made to the original code are automatically tracked.
Without Github, anyone wanting to collaborate on an open-source project would be required to obtain the source code, make any modifications, then send it back to the person maintaining the project who would have to determine if the changes should be incorporated.
The Github platform allows developers to share code with other developers worldwide. When the download is complete, open the Downloads directory then unzip the file Blink-master.
By the way, if you are really interested in improving your skills on Raspberry Pi, I highly recommend to check out my e-book here.
These are the basic commands are that every Linux beginner should learn. You might already know these commands, so this might be a reminder. There are many options to help you find the good file size, last modification date, ….
And if you want to learn options to quickly find a file on Raspberry Pi, you can also read this other article on the topic. There is a cheat sheet available here that you can download for free, with all the commands listed in this article in fact there are a few bonuses in the PDF.
Make sure to download it, so you always have it handy when you use your Raspberry Pi. The Ethernet is called eth0 and the Wi-Fi is wlan0. You have to use these names with some commands below. A list of all available packages is called a repository. Once installed, you need to update this repository and all of your packages regularly to keep your system safe.
These commands explain how to do this. After that, you may want to install new packages on your Raspberry Pi. Here are the commands you need to know to do this:. Sometime you may need to use the -9 option to force all related commands to stop. This should be used as a last step, and if possible on the non-critical process. Most of the commands from this post are basically Linux commands.
You can use sudo before to schedule tasks to run with root privileges. I have an entire tutorial on this topic if you need more information. With only one screen running, screen -r will resume it directly. The basic syntax of awk is this one:. Then in the program string, we ask to display only the first column.
So this command will display only a list of usernames. This is the simple way to use it if you want to know more, I recommend reading a dedicated tutorial like this one. This command will transform text to what you want. Imagine you have a Raspberry Pi that you want to use for controlling some NeoPixels and for whatever reason you don't have an Internet connection. This could be because you are running this at a Raspberry Jam, or because you want to update a computer that is only available via an internal network.
This guide will work through the steps you need to follow to complete the instructions in NeoPixel worksheet without having an Internet connection on the Raspberry Pi. You will still need another computer that does have Internet access or to have prepared the files in advance and some way of transferring the files eg.
If you have first need to install Debian software then you can first query the files required on the Raspberry Pi offline computer and then download those on a different computer. The files can then be transferred to the offline computer by USB flash drive an installed using dpkg.
To identify the required files first run the following command on the offline computer: apt-get install scons swig --print-uris tee offline. This will not install the files, but will log the details into a file called offline. An example output is shown below:. Reading package lists Building dependency tree Press H in the man screen to view a summary of navigational key presses.
These are worth learning so you can do more than press space to move to the next page. Sometimes these are the same as the man pages. In other cases they provide a different description.
Try these:. While man bash gives you a brief description of the GNU Bourne-Again Shell and the options used with the bash command; info bash gives the whole history and hundreds of pages of detailed information. Press H on an info screen to view the controls for navigating such long documents. Press Q to exit the help screen. Here, the man -k command comes in useful.
In particular, try this:. The man -k option is worth remembering. Apropos is used to search manual page names and descriptions. Next to each command is a number, like 1 or 2. These correspond to the section numbers of the manual view using man man.
The section numbers are useful for guiding you to the commands that can be used on the command line. As a general rule, 1: Executable programs or shell commands, and 2: System calls, both tend to be worth investigating. Higher numbers are for library calls, special files, and kernel routines for advanced users. Can you be a maker without knowing electronics?
Akkie was before Raspberry Pi. Growing fruit and vegetables can be so frustrating, but a Raspberry Pi-based smart agriculture project helps take the uncertainty out of cultivation.
Bringing the jam sessions outside thanks to a Raspberry Pi broadcasting notes and lyrics. Rob Zwetsloot grabs a seat and listens. Sniffing out your surroundings with this next step in sensor technology. Rob Zwetsloot asks a Raspberry Pi to detect cheese or petrol. See more articles. Why learn to use Terminal and the Command Line?
The fastest way to get access to the command line is through the Terminal app. Find your location in the command line The first thing you need to learn is how to find out where you are. You can view the contents of a directory inside your working directory using ls and its name: ls Documents You can also view the contents of the directory above you using two dots..
Now try it using an absolute path. Hard links: The number of files that are linked to this file. Owner: The person who owns the file. Usually either pi or root. Group: The group the file belongs to. File size: The name of the file. Modification: When the file was last changed. File name: The name of the file. The most obscure item is the list of letters and hyphens that make up the permissions.
After that are nine letters arranged into three groups of three see Fig 1 overleaf : Owner: Typically this will be the person who created the account.
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