In this article, we will look at how to install dependencies with Apt command. In fact, it can also be used to upgrade your entire operating system, not just individual packages. It is smart enough to find the package you are trying to install, determine its dependencies, and install both the package as well as its dependencies for you.
Now there are two ways to proceed. Either you can manually note the package names and download them using apt-get command. Or you can run the following command in your terminal. These commands will get the job done for us in the same manner that the yum clean and yum cleanall commands do on CentOS. The clean flag removes all the. The autoclean flag also removes all the. Almost every Ubuntu user has seen the error " The following packages have unmet dependencies issues ".
In this circumstance, the failure almost always is related to the apt package manager as opposed to the software being installed. Luckily, there are multiple options available to rectify this situation. We will look at several ways to address this issue. First, as with any system modification, taking a backup of our configurations is a must. We do this to ensure that is any additional issues crop up, we can revert the changes we have made to restore our system files.
When these dependency errors occur, we have multiple options we can try to address the issue. As an aside, when the apt-mark showauto command is used, it prints a list of each package that will be automatically added on a new line.
If a package name is given, only those packages that will be installed automatically will be shown. We mention this, so we can note the packages that should be installed with the software.
Utilizing this option will allow for a wider base of software and dependencies to pull from. Then, once this is updated, we can try to reinstall the software. Once the above command has finished, we can try to update the package again. Trying to update the software should be our first line of defense.
Next, we can show the packages that need to be upgraded and then attempt to upgrade the software. A corrupted package database or packages that were broken or not installed properly can cause this problem. This option uses the autoremove flag to address this. This command will remove only obsolete or unnecessary packages that no longer exist in the repositories. This command will clean up the local repository of downloaded packages.
Then, try to reinstall the software. To locate software that is held or on hold , we can use the apt-mark command. Once we have that info, we can use the remove and dry-run flags to see exactly what will be removed. According to the apt-get man page, using the -f or --fix-broken parameter will allow the apt-get command to try to correct the broken dependencies issue.
Do not use the package name in the command when using -f. If packages are specified, these have to completely correct the problem. The option is sometimes necessary when running APT for the first time; APT itself does not allow broken package dependencies to exist on a system.
It is possible that a system's dependency structure can be so corrupt as to require manual intervention which usually means using dselect 1 or dpkg --remove to eliminate some of the offending packages. Use of this option together with -m may produce an error in some situations. Professional backup tip: all configuration files before reinstalling packages.
How do I reinstall all packages in Linux? The rsync package is then reinstalled. Be sure to customize the re filebackup until you enter the following commands, usually make sure. Following the apt or apt-get command to reinstall htop, enter the following: sudo apt - reinstall add htop OR sudo apt-get --reinstall install htop —reinstall for deadlock fixing packages. For work, a professional aptitude test may also be provided.
Format: Reinstall sudo aptitude pkg reinstall sudo aptitude nginx. You have learned how to use apt-get to force a batch reinstall on Debian and Ubuntu Linux. For more information on the male apt-get page here, or use the myarticlenetwork command to always read it offline on your machine: suitable person Male apt-get Male dpkg Male CP. The same procedure works for updating and removing dependencies. Now, let us finally get into using the apt-get command and start installing dependencies.
But before that, it is important to learn what the syntax of this command is. The syntax described above is the most commonly used ones; however, there are some other ways to call this command. With that being said, you should now have a good general understanding of how apt-get works and how you can use it to install dependencies.
The next step is to start looking at practical instances of its usage to see how we can use different command variants to manipulate dependencies. Let us suppose that you want to install Python on your Ubuntu system.
The first thing you would need before you install Python is a dependency known as libpython2. So, you can run the command below to get it. The output shows that the required package has been retrieved, extracted, and configured.
We also get the amount of storage space the package is consuming. If any missing packages are remaining, we can simply run the command below to install those as well. Now that all the dependencies are taken care of, we can install Python with the traditional command as follows. That pretty much covers how you can install dependencies in Ubuntu; however, there are other ways you can manipulate them as well.
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