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59 lines
2.3 KiB
Plaintext
59 lines
2.3 KiB
Plaintext
# apt-get
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# Command-line interface to APT package management
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# Update the local database of available packages, as discovered from package
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# index file found in their sources. This does not actually update your
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# installed software! For that, keeping reading.
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apt-get update
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# Upgrade installed packages, but there may be exceptions, such as important
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# kernel packages. Also, packages will not be removed, like if they're
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# deprecated, with this method.
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apt-get upgrade
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# Unlike the above, this will upgrade all of the installed packages, and
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# perform other actions required for a successful and thorough upgrade. This
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# will also allow for upgrading to the next minor release of your
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# distributions, such as from Ubuntu '16.04.1' to '16.04.2'.
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apt-get dist-upgrade
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# Clean out (completely) the follow locations of saved DEB files:
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#
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# /var/cache/apt/archives/* /var/cache/apt/archives/partial/
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# /var/lib/apt/lists/partial/
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# /var/cache/apt/pkgcache.bin /var/cache/apt/srcpkgcache.bin
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#
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# This will also, thanks to the provided flag, be somewhat verbose.
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apt-get clean -s
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# View the changelog for the firefox package. Useful prior to or after upgrade.
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apt-get changelog firefox
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# Download PKG (one or more) without actually installing or extracting them. A
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# good use for this might be to upgrade an offline system, by downloading the
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# packages on a system using an Internet-able machine. Files are downloaded
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# into the CWD.
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apt-get download PKG
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# Install PKG (one or more), bringing in dependencies and, provided settings
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# allow it, install recommended and/or suggested packages.
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apt-get install PKG
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# At times, dependencies won't be installed, yet you still need them; the
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# following command will often fix this, and is usually suggested to the user.
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apt-get -f install
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# Remove PKG, while also purging system-wide configuration files for it.
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apt-get purge PKG
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# Alternative syntax to the above.
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apt-get remove --purge PKG
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# Often used to first update the local database of packages, then, only if
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# successful, a full system upgrade is started.
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apt-get update && apt-get dist-upgrade
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# Download specified package (firefox, in this example) and all packages marked
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# thereby as important or dependencies. Files are downloaded into the CWD.
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apt-get download firefox `apt-cache --important depends firefox |
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awk '{if(NR>1){printf("%s ", $2)}}'`
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