List of the most useful Ubuntu administration commands.
Package Management
List All Installed Packages
See exactly what is installed in your system,
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dpkg --get-selections > installed-software.txt |
The same list can also be used to install the same packages on another machine... Note I have not tested this command myself yet.
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dpkg --set-selections < installed-software.txt
dselect |
Determine Package Program Belongs To
Find out what packages if any use the specified folder,
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dpkg -S "/etc/ssl/certs" openssl, ca-certificates: /etc/ssl/certs |
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The package lookup will only work against the original binary. If it does not appear to work, check if the file you are referencing is actually a symbolic link and follow the links to the real binary file. |
List all files relate to a package,
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