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/filefollowed bysudo apt-get install -f. - You can install it using
sudo apt install ./name.deb(or/path/to/package/name.deb).
With oldapt-getversions 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
gdebiand 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.listfile and in the/etc/apt/sources.list.ddirectory. 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.