admin$ /opt/coolstack/php5/bin/pear -V      
PEAR Version: 1.6.1
PHP Version: 5.2.4
Zend Engine Version: 2.2.0
Running on: SunOS yourhost.com 5.11 snv_67 i86pc

To check your list of PEAR modules installed:

admin$ /opt/coolstack/php5/bin/pear list

To list the PEAR modules that are outdated, and for which upgrades are available:

admin$ /opt/coolstack/php5/bin/pear list-upgrades
pear.php.net Available Upgrades (stable):
=========================================
Channel      Package Local          Remote         Size
pear.php.net PEAR    1.6.1 (stable) 1.6.2 (stable) 291kB