SLES 11 SP 4 has the command line tool zypper to manage the repositories and install or update packages.

To get a list of repositories use the command

sudo zypper lr

To check repositories are up to date

sudo zypper ref

To search for a package

sudo zypper search openssl
sudo zypper search ssleay

On my openSUSE 13.2 the last command shows I have 2 packages installed

perl-Crypt-SSLeay
perl-Net-SSLeay

For more info

zypper help

poj