Geek Answers Handbook

How to get a list of rpm packages installed on a system

how to get a list of all rpm packages installed on Linux using Perl. any help is appreciated.

+4
source share
3 answers

I think you can always use the rpm command:

 $ rpm --query --all --qf "%-30{NAME} - %{VERSION}\n"

Then you can use this in various ways:

 use autodie; open my $RPM_FH, "-|", qq(rpm --query --all --qf "%-30{NAME} - %{VERSION}\n"); my @rpmLines = <$RPM_FH>; close $RPM_FH;

Or:

  my @rpmLines = qx(rpm --query --all --qf "%-30{NAME} - %{VERSION}\n");

I also found an RPM :: Database that would be a more Perlish way of doing things. This package associates the RPM database with a hash:

 use RPM::Database; tie %RPM, "RPM::Database" or die "$RPM::err"; for (sort keys %RPM) { ... }

I never used it, so I'm not sure exactly how it will work. For example, I assume that the value of each hash record is a kind of database object. For example, I would suggest that it would be important to know the version number and files in your RPM package, and there should be some information that can be pulled out, but I did not see anything in RPM::Database or in RPM :: HEADER . Play with him. You can use Data :: Dumper to help examine the returned objects.

WARNING Use Data::Dumper to help examine information in objects and classes. Do not use it to figure out how to infer information directly from objects. Use the correct methods and classes.

+7
source

The easiest way is perhaps to run the rpm command.

 chomp(my @rpms = `rpm -qa`);
+4
source

Depending on how you interpret your question, the correct answer might be:

 rpm -qR perl
+1
source

More articles:


All Articles