Unsurprisingly, they usually happen when using the experimental or unstable repositories, whose contents are still being tested.
However, problems with packages also occur in testing, and even occasionally in stable. Mixing sources from different Debian-derived distributions can also cause problems. Sometimes, a requested package or dependency conflicts with an already installed package, and the scripts included in the. Many users perform system upgrades when a new official version of Debian is released. In such large upgrades, a few problems are only to be expected. Usually, though, information about problems and workarounds can be found via an Internet search, if you can stand waiting for a week or two.
When broken dependencies occur, your first priority should be gathering information. The main source, of course, is messages generated by apt-get, which specify exactly what packages are causing problems.
You can also run apt-get check to check for broken dependencies. If you still have Web access, you can also check the Debian bug-tracking system to see if anyone else is having the same problem. Use apt-cache or the list of packages on the Debian Web site to look at the utilities and related programs for both apt-get and dpkg. An especially useful one is apt-listchanges, which shows the differences between two versions of the same package. Another useful tool is script, which allows you to save a log file of your recovery efforts from a command shell.
No matter how the broken dependencies arise, you have several ways to resolve the problems. In the order in which you should try them and in ascending order of consequences, if something goes wrong , are:. Run apt-get update to get the latest list of packages from your sources, then retry the installation.
If the package is just announced, some mirrors may take a few days to have it and all its dependencies. Run apt-get -f install or apt-get -f remove without specifying a package, to force completion of package installations.
If you are attempting a system upgrade, then use apt-get upgrade -f dist-upgrade. You might want to add the --no-download switch, so that you are working only with packages already on your system, rather than downloading other ones and possibly compounding your problems.
You can use the list of packages on the Debian Web site to help choose the version number of the packages. Alternatively, try dpkg --configure -a to attempt to reconfigure partly installed packages another way. I am really sorry for my confusing answers but I am total newbie. For now : — Toma Tomov. TomaTomov : apt-get update does require an internet connection because it downloads information regarding the latest packages and their versions from the repository.
You won't be able to take update unless you have an internet connection. To check if you are connected try pinging a website. This is a simple but not a sure shot to check your internet connectivity. Depending upon your environment and firewall configurations, you may or may not get a reply.
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Note that, we have run the commands and procedure mentioned in this article on a Debian 10 system. The same procedure can be followed in Ubuntu and older Debian versions. We will use the command-line Terminal for trying the solutions and fixing the problem. To open the Terminal application in Debian, hit the super key on the keyboard and search for it using the search bar that appears.
When the search result appears, click on the Terminal icon to open it. Apt-get is a Terminal based package management tool used for installing, upgrading, and removing packages. Along with these features, it also has flags that can be used for fixing missing dependencies and broken packages. Once you are done with the update, execute the below command in order to force the package manager to find any missing dependencies or broken packages and install them.
Viewed k times. I was watching this , and, as you can see, the first command I am told to put in is: sudo apt-get install python-setuptools When I do this, it outputs: sudo: apt-get: command not found I have no idea why this is the case. How can I resolve this so I am following the tutorial correctly? Peter Mortensen Add a comment. Active Oldest Votes. This command would be: brew install python Use Homebrew to install packages that you would otherwise use apt-get for.
One of the prerequisites for Homebrew are the XCode command line tools. Install XCode from the App Store. Background A package manager like apt-get or brew just gives your system an easy and automated way to install packages or libraries. Alpine based systems use apk. Warning As of 25 April , homebrew opts the user in to sending analytics by default.
This can be opted out of in two ways: Setting an environment variable: Open your favorite environment variable editor. Running the following command: brew analytics off the analytics status can then be checked with the command: brew analytics.
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