Apt Update Vs Upgrade

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Apt get has a few options which looks the same to me autoclean autoremove and clean What do each of them do

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I have successfully installed some packages using the command sudo apt get install packagename when I have known in advance that those packages are available But how can

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I d like to output a list of all installed packages into a text file so that I can review it and bulk install on another system How would I do this

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Apt cache s madison command attempts to mimic the output format and a subset of the functionality of the Debian archive management tool madison It displays available versions of

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No apt is not a shortcut to apt get they are two separate programs even if they are closely related But several of the options provided by man apt get do apply to apt as well

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I know that when it comes to the Red Hat distribution I can use the following commands to download a copy of the package and then separately install it yumdownloader

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1123 How do I update a single package As far as man apt get says apt get upgrade doesn t take a package list of packages as parameter upgrade upgrade is used to install the newest

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For example if apt get fails to install something because of conflicting dependencies it will give up However aptitude might offer to go ahead but uninstall a whole bunch of other packages

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Use this sudo apt update Fetches the list of available updates sudo apt upgrade Installs some updates does not remove packages sudo apt full upgrade Installs updates may also