When you use
Once the download is finished it calls
So if you have a
Why to use
apt
to install a package, internally it uses dpkg
. When you install a package using apt, it first creates a list of all the dependencies and downloads it from the repository.Once the download is finished it calls
dpkg
to install all those files, satisfying all the dependencies.So if you have a
.deb
file:- You can install it using
sudo dpkg -i /path/to/deb/file
followed bysudo apt-get install -f
. - You can install it using
sudo apt install ./name.deb
(or/path/to/package/name.deb
).
With oldapt-get
versions you must first move your deb file to/var/cache/apt/archives/
directory. For both, after executing this command, it will automatically download its dependencies. - Install
gdebi
and open your .deb file using it (Right-click -> Open with). It will install your .deb package with all its dependencies.
(Note: APT maintains the package index which is a database of available packages available in repo defined in/etc/apt/sources.list
file and in the/etc/apt/sources.list.d
directory. All these methods will fail to satisfy the software dependency if the dependencies required by the deb is not present in the package index.)
Why to use
sudo apt-get install -f
after sudo dpkg -i /path/to/deb/file
(mentioned in first method).
From man apt-get
-f, --fix-broken
Fix; attempt to correct a system with broken dependencies in place.
When dpkg
install a package and package dependency is not satisfied, it leaves the package in unconfigured
state and that package is considered as broken. sudo apt-get install -f
command tries to fix this broken package by installing the missing dependency.