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To compile something, I needed the zlib1g-dev package to be installed so I launched an apt-get install zlib1g-dev.

apt-get informed me nicely that the package was already auto-installed because of an other package, and that it understands that I want it installed explicitly now :

# apt-get install zlib1g-dev
zlib1g-dev is already the newest version.
zlib1g-dev set to manually installed.

My compilation done, I don't need it any more explicitly, so I want to revert its status to the previous one : auto-installed. This way it will be pruned automatically when it will not be needed any more with a simple apt-get autoremove.

I cannot do an apt-get remove zlib1g-dev since some packages still depends on it.

So how may I revert the package zlib1g-devinstallation state to auto-installed ?

I know that I might edit /var/lib/apt/extended_states by hand from

Package: zlib1g-dev
Auto-Installed: 0

to

Package: zlib1g-dev
Auto-Installed: 1

... but it just doesn't feel right.

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3 Answers 3

up vote 15 down vote accepted

Aptitude can help you when you initially install the package:

aptitude install "zlib1g-dev&M"

Or, after your have installed the package:

aptitude markauto "zlib1g"

Edit: If you do not have aptitude, you can use

apt-mark auto zlib1g-dev
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+1: I don't have the aptitude reflex yet, and it works. Thx. –  Steve Schnepp Nov 25 '09 at 13:13
    
Good answer, but I +1's @ArvindSing's answer using apt-mark because it does not require that you install aptitude. apt-mark comes with apt package which everyone should already have. –  Christopher Schultz Jan 17 '13 at 16:04

apt-mark can help you:

apt-mark auto zlib1g-dev

For 11.04 or older, use "markauto" instead of "auto"

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This is what you're looking for.

sudo apt-get markauto first-package second-package etc-package

Source:

apt-get --help
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3  
Please note that this is deprecated now in favor of apt-mark –  Joril Oct 1 '12 at 9:23

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