for debian derivs try searching for perl module packages like so...
# apt-cache search dns | grep perl
libnet-dns-perl - Perform DNS queries from a Perl script
courier-filter-perl - purely Perl-based mail filter framework for the Courier MTA
libdns-zoneparse-perl - Perl extension for parsing and manipulating DNS Zone Files.
libmail-spf-query-perl - Query SPF (Sender Permitted From) to validate mail senders
libmail-verify-perl - Utility to verify an email address
libnet-dns-fingerprint-perl - library to determine DNS server vendor, product and version
libpoe-component-client-dns-perl - a DNS client component for POE
i find it works better than 'apt-cache search dns perl' as the package
naming convention inclues the '-perl' and then you can supply whatever
keywords you think are specific enough...
You can always specify -n (--names-only) to "apt-cache search" to achieve a similar effect:
$ apt-cache search -n dns perl
libdns-zoneparse-perl - Perl extension for parsing and manipulating DNS Zone Files.
libnet-dns-fingerprint-perl - library to determine DNS server vendor, product and version
libnet-dns-perl - Perform DNS queries from a Perl script
libpoe-component-client-dns-perl - a DNS client component for POE
cpan-libnet-dns-perl - Interface to the DNS resolver
Or if you insists to have exactly the same search as your example above:
$ apt-cache search -n perl | fgrep dns
(on my system it gives exactly the same results, but it might be different if "dns" is not mentioned in the name but only in the short description line)
(I have the following sources line for extra perl modules, hence the "cpan-" package):
deb http://debian.pkgs.cpan.org/debian unstable main
)
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