I have seen it before. I am just wondering what exactly does it do?
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2 Answers
From man apt-get:
-f, --fix-broken
Fix; attempt to correct a system with broken dependencies in place. This
option, when used with install/remove, can omit any packages to permit APT
to deduce a likely solution. If packages are specified, these have to
completely correct the problem. The option is sometimes necessary when
running APT for the first time; APT itself does not allow broken package
dependencies to exist on a system. It is possible that a system's dependency
structure can be so corrupt as to require manual intervention (which usually
means using dselect(1) or dpkg --remove to eliminate some of the offending
packages). Use of this option together with -m may produce an error in some
situations. Configuration Item: APT::Get::Fix-Broken.
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21A you can thank the lord for it. When you have a broken package its like having a rock inside your shoe... and you are in a marathon... with bears riding sharks riding huge spiders. But thanks to this broken stuff gets fixed. Aug 24, 2011 at 4:04
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4In the occasional situation where
sudo apt-get -f installis not, by itself, sufficient to fix broken packages, see this answer. Sep 13, 2012 at 16:22 -
Just as an addition - if you change your mind about the
packagethat resulted in the unmet dependencies, then simply dosudo apt-get remove packageto get rid of the unmet dependency error and not install the packages that fix the break.– user373531Oct 10, 2016 at 12:53
Here's where I found it very useful. I ran a dpkg command to install a couple of .deb packages, but the install failed because some dependencies were missing.
I then ran
apt-get -f install
and it installed exactly the dependencies that were needed. I was then able to re-run my dpkg command and everything worked.
