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expand instructions for apt users

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Matthew Miller 2021-11-27 13:56:13 -05:00
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modules/ROOT/pages/dnf-vs-apt.adoc
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@ -8,19 +8,27 @@ APT is the package manager/dependency solver for the Debian ecosystem, i.e. it m
|=== |===
| APT command | DNF command | notes | APT command | DNF command | notes
| `apt install`
`apt-get install`
| `dnf install`
| Of course, actual package names may vary. For example, `libc6-dev` on Debian maps to `glibc-devel` in the Fedora universe.
| `apt update` | `apt update`
`apt-get update` `apt-get update`
| `dnf check-update` | `dnf check-update`
| This command is rarely needed, as dnf updates its package cache automatically when it is stale. A cache update can be forced by appending `--refresh` to other commands, e.g. `dnf upgrade --refresh` | This command is rarely needed, as dnf updates its package cache automatically when it is stale. A cache update can be forced by appending `--refresh` to other commands, e.g. `dnf upgrade --refresh`.
| `apt upgrade` | `apt upgrade`
`apt-get upgrade` `apt-get upgrade`
| `dnf upgrade` | `dnf upgrade`
| | Note that while `apt update` does something different, `dnf update` and `dnf upgrade` are synonyms. You can also use the shorter `dnf up`.
| `apt full-upgrade` | `apt full-upgrade`
@ -30,7 +38,7 @@ APT is the package manager/dependency solver for the Debian ecosystem, i.e. it m
`dnf system-upgrade` (see note) `dnf system-upgrade` (see note)
| While `distro-sync` is the most direct functional equivalent, `dnf system-upgrade` should be used to upgrade from one release to another, e.g. from Fedora 31 to 32. This is a multi-step process as described xref:dnf-system-upgrade.adoc[here]. | While `distro-sync` is the most direct functional equivalent, `dnf system-upgrade` should be used to upgrade from one release to another, e.g. from Fedora Linux 34 to 35. This is a multi-step process as described xref:dnf-system-upgrade.adoc[here].
| `apt remove` | `apt remove`
@ -44,31 +52,31 @@ APT is the package manager/dependency solver for the Debian ecosystem, i.e. it m
`apt-get purge` `apt-get purge`
| --- | ---
| | Fedora packages don't treat configuration files in the same way as Debian packages, so there is no direct equivalent.
| `apt autoremove` | `apt autoremove`
`apt-get autoremove` `apt-get autoremove`
| `dnf autoremove` | `dnf autoremove`
| | Note that this can occasionally remove packages that you might actually want. Use `dnf mark` to flag packages to keep.
| `apt search` | `apt search`
`apt-cache search` `apt-cache search`
| `dnf search` | `dnf search`
| | `dnf repoquery` is useful for advanced searches.
|=== |===
With the exception of the distribution upgrade working differently and DNF updating the cache automatically, the commands are very similar. More info on DNF can be found xref:dnf.adoc[here]. With the exceptions of the distribution upgrade working differently, and DNF updating the cache automatically, the commands are very similar. More info on DNF can be found xref:dnf.adoc[here].
== Why is APT in the Fedora repositories? == Why is APT in the Fedora repositories?
WARNING: APT *can not* be used to install packages on Fedora, you *have to use DNF* instead. WARNING: APT *can not* be used to install packages on Fedora, you *have to use DNF* instead.
The `apt` command on Fedora used to - until https://fedoraproject.org/wiki/Changes/Move_apt_package_from_RPM_to_DPKG_backend[Fedora 32] - actually be APT-RPM, which basically mapped normal apt commands so that they worked with Fedora's RPM package management system. The `apt` command on Fedora used to -- until https://fedoraproject.org/wiki/Changes/Move_apt_package_from_RPM_to_DPKG_backend[Fedora 32] -- actually be APT-RPM, which basically mapped normal apt commands so that they worked with Fedora's RPM package management system.
However, APT-RPM is unmaintained, broken & insecure, and so was dropped in favour of shipping the actual Debian APT software. Since APT exclusively deals with `.deb` packages, the `apt` command can no longer be used to manage Fedora packages. Its purpose is now purely as a tool for people building packages for Debian-based distributions on a Fedora system. However, APT-RPM is unmaintained, broken, and insecure, and so was dropped in favour of shipping the actual Debian APT software. Since APT exclusively deals with `.deb` packages, the `apt` command can no longer be used to manage Fedora packages. Its purpose is now purely as a tool for people building packages for Debian-based distributions on a Fedora system.