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Linux Bash: How To Quickly Backup And Reinstall A Set Of Packages

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How to quickly backup and reinstall a set of packages after a crash, mistake.

dpkg --get-selections | grep -v deinstall > ~/InstalledPackages.list
grep -ve ^# -e ^$ /etc/apt/sources.list > ~/InstalledSources.list

dpkg --set-selections < ~/InstalledPackages.list
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