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I'm writing a Makefile for our team to be able to set up a local environment with all of the software they need to install packages, etc so that they can develop quickly without having to figure out which software to install. Our repository has a PACKAGES file that has all of the required ubuntu packages that can be installed with this little gem:

[unix]$ sudo dpkg --set-selections < PACKAGES
[unix]$ sudo apt-get -u dselect-upgrade

This is great because its easy for everyone to get their environment set up by putting this in a Makefile. The challenge is how to restore their environment when the project is done. How do you uninstall all of the PACKAGES (and their unused dependencies) if you want to clean the environment? Is there an equivalent approach to remove a list of packages from the command line?

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up vote 1 down vote accepted

Like so...

sudo apt-get remove $(cat packages.txt)
  • But how do you determine if any of the packages in the file was not already installed on the system or added later from another bit of software? Removing it might break other programs ;) You probably need to remove them one at the time and also check if you can delete them without un-installing any other program.
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good point on not removing the software if it was already installed. was hoping to avoid the cat call, but thanks! –  dino May 14 '13 at 21:47
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