use apt-get to download a file Use apt-get to download a file. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. What can I do to prevent this in the future? If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. Cloudflare Ray ID: 67a5d3d6ff1584a4 • Your IP : 188.246.226.140 • Performance & security by Cloudflare. Raspberry Pi Offline - Downloading debian, git and python files for offline install. This is a guide for performing offline installs on a Raspberry Pi, or other debian based Linux computers where you don't have an Internet connection. 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. a USB flash drive). Using apt to catalog and install deb dpkg files. 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. In this case we need to install scons and swig. To identify the required files first run the following command on the offline computer: apt-get install scons swig --print-uris | tee offline.txt. This will not install the files, but will log the details into a file called offline.txt. An example output is shown below: As you can see all the required files (including a required dependency) are listed at the bottom of the file. You can download these on another computer using wget followed by the name of the file (or download directly within a browser). Now copy the files to the offline computer (eg. using a USB flash drive) and then run: sudo dpkg -i *.deb (in some circumstances you may need to install these in a specific order, however as long as all the files are in the same directory it usually works as a single install. Download from github. The next stage in the NeoPixel install is to download some files from github. The instructions in the Raspberry Pi NeoPixel install guide, assume this will be done online, but this can be done using another computer and easily transferred to the offline computer. To download files from github then you can use either wget on the master.zip file or use the "get ZIP" option from a web broser. The unzip command can then be used to extract the files. For example instead of using git clone download the files using: wget https://github.com/jgarff/rpi_ws281x/archive/master.zip wget https://github.com/penguintutor/neopixel-gui/archive/master.zip. Or download using a web browser from: https://github.com/jgarff/rpi_ws281x and https://github.com/penguintutor/neopixel-gui. You may need to rename these once downloading (especially the wget file which will create files called master.zip). Transfer these to the Raspberry Pi and extract the files by entering unzip followed by the name of the .zip file. When downloading the master files from github then it adds "-master" to the end of the directory. You may need to rename the to remove -master eg. mv rpi_ws281x-master rpi_ws281 mv neopixel-gui-master neopixel-gui. Offline install using Python easy setup.py file. One of the steps in the install of the NeoPixel ws281x library involves downloading and install the Python setuptools from the Internet. The best way to identify what it is expecting is to run the normal installer and look for any errors where it attempts to get files from the Internet. In this case the rpi_ws281x library install (eg. sudo python3 setup.py install) attempts to use the python easyinstall which first needs the setuptools. The error message shows this as https://pypi.python.org/packages/source/s/setuptools/setuptools-5.7.zip Download this using wget and copy that to the offline computer and install using pip3. sudo pip3 install setuptools-5.7.zip. Now retry the install sudo python3 setup.py install and hopefully it should now work. If not then look for any other errors where it attempts to download something and perform that manually offline. More information. See the guides and blog posts relating to the Raspberry Pi. Also see the Linux Tutorials for more information on using Linux. Linux apt-get command. On Linux operating systems that use the APT package management system, the apt-get command is used to install, remove, and perform other operations on installed software packages. The apt-get command, and other core APT utilities, are available by default in the Debian, Ubuntu, and Linux Mint operating systems. Syntax. Commands. The dist-upgrade command may therefore remove some packages. If a hyphen is appended to the package name (with no intervening space), the identified package will be removed if it's installed. Similarly a plus sign can designate a package to install. These annotation features may be used to override decisions made by apt-get's default conflict resolution system. A specific version of a package can be selected for installation by following the package name with an equals and the version of the package to select. This causes that specific version to be located and installed. Alternatively, a specific distribution can be selected by following the package name with a slash and the version of the distribution or the archive name ("stable", "testing", "unstable"). Both of the version selection mechanisms can downgrade packages and must be used with care. You don't want to manually remove a package that another installed package is dependent on. Source packages are tracked separately from binary packages via deb-src lines in the sources.list file. If the --compile option is specified then the package will be compiled to a binary .deb using dpkg-buildpackage for the architecture as defined by the --host-architecture option. If --download-only is specified then the source package are not unpacked. A specific source version can be retrieved by postfixing the source name with an equals and then the version to fetch, similar to the mechanism used for the package files. This enables exact matching of the source package name and version, implicitly enabling the APT::Get::Only-Source option. Options. All command line options may be set using the configuration file; the descriptions indicate the configuration option to set. For boolean options you can override the config file using something like -f- , --no-f , or -f=no . Configuration Item: APT::Get::Simulate . Simulated runs performed as a user, automatically deactivate locking ( Debug::NoLocking ), and if the option APT::Get::Show-User-Simulation- Note is set (as it is by default) a notice is displayed indicating that this is only a simulation. Runs performed as root do not trigger either NoLocking or the notice; superusers should know what they are doing without further warnings from apt-get . 25 Useful Basic Commands of APT-GET and APT-CACHE for Package Management. This article explains how quickly you can learn to install , remove , update and search software packages using apt-get and apt-cache commands from the command line. This article provides some useful commands that will help you to handle package management in Debian/Ubuntu based systems. APT-GET and APT-CACHE Commands. What is apt-get? The apt-get utility is a powerful and free package management command line program, that is used to work with Ubuntu’s APT ( Advanced Packaging Tool ) library to perform installation of new software packages, removing existing software packages, upgrading of existing software packages and even used to upgrading the entire operating system. What is apt-cache? The apt-cache command line tool is used for searching apt software package cache. In simple words, this tool is used to search software packages, collects information of packages and also used to search for what available packages are ready for installation on Debian or Ubuntu based systems. 1. How Do I List All Available Packages? To list all the available packages, type the following command. 2. How Do I Find Out Package Name and Description of Software? To find out the package name and with it description before installing, use the ‘ search ‘ flag. Using “ search ” with apt-cache will display a list of matched packages with short description. Let’s say you would like to find out description of package ‘ vsftpd ‘, then command would be. To find and list down all the packages starting with ‘ vsftpd ‘, you could use the following command. 3. How Do I Check Package Information? For example, if you would like to check information of package along with it short description say (version number, check sums, size, installed size, category etc). Use ‘ show ‘ sub command as shown below. 4. How Do I Check Dependencies for Specific Packages? Use the ‘ showpkg ‘ sub command to check the dependencies for particular software packages.