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I just installed MySQL-server and all of its dependecies, anong other neccessities. But when it went to configure mysql-server it failed to do so, and spit out an error. Which error is not relevant here as I managed to locate the problem as a drpendency issue between mysql-server and mysql-common. Mysql-common needs to be removed.

But when i go to

apt-get purge remove mysql-common 

It automatically wants to remove everything in association with it as well, including all mysql dependencies, even apache2 and php5..

So what arguement needs to be added to apt-get command to uninstall ONLY ONE package, yet leave all others intact.

Thanks for your time folks.

Take care.

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2 Answers 2

up vote 6 down vote accepted

apt-get won't let you do that, since it's a potentially dangerous step for a package management system to allow.

As long as you are aware that there may be consequences, use dpkg with the --remove option to do it. For example:

sudo dpkg --remove mysql-common

Note: On my 12.04 system with apache2, php5, mysql-server installed separately, using apt-get to remove mysql-common DOES NOT want to remove apache2 or php5.

From insomnia's comment: If you need to override the dependency system's decision you can (with great care and making sure you know what you are doing) use an additional --force-depends.

sudo dpkg --remove --force-depends mysql-common
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Okay thanks. Many others claimed it worked. I mean a lot of people. But yeah that happens on ubuntu. But im actually on debian. But i asked here cuz i am a user here, and they are very similar and the package system is the same.. thanks bud. –  insomnia Aug 9 '12 at 21:03
    
don't worry man. I'm not gonna leave you hanging. I always accept. People just usually ignore it after i accept and there is still an issue. But I just tried it and it wouldnt let me. Is there a force command? –  insomnia Aug 9 '12 at 21:15
    
Sorry, that's right - I think you have to wait a certain amount of time before you can do it - 15 mins, I think? Please try again whenever you have a chance, no hurry. Also, I just noticed that you mentioned you are using Debian -- note that questions involving Debian are off-topic, and are often closed as such. Please consider asking on unix.stackexchange.com for something Debian-specific in the future :) –  izx Aug 9 '12 at 21:20
    
Yeah, I figured as such.. main reason why I didnt really mention it until I needed. I mean their package managers are the same, Ubuntu is just suped up debian. but alright. the 15 minute thing doesnt work though, cuz I tried way longer than 15 minutes after. But cant I type something similar to "dpkg -f --remove mysql-common"? –  insomnia Aug 9 '12 at 21:31
    
If plain --remove gives you a warning and aborts, sure, you can force it with -f. BTW, --remove is the same as -r. –  izx Aug 9 '12 at 21:35

If anyone would like to know there 2014 debian command its:

dpkg --force-all -r name_of_package

Its changed a bit

There is alot of --force- arguments so for sake of depency better check them by:

dpkg --force-help
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--force-all is definitely not safe, why not suggest --force-depends AND provide an appropriate warning too? –  guntbert Sep 13 at 16:00
    
It's never safe to delete package that is needed for other packages without uninstalling the other one. --force-all is just quick and dirty approach –  Michal Sapsa Sep 13 at 16:35

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