lsnrctl stat ZRRI_LISTENER | perl -lane 'print $F[3] if /Parameter/'

Update: Oops. That isn't the same thing... lsnrctl stat ZRRI_LISTENER | perl -lane 'print $F[3] if /Parameter/' | xargs perl -pe 0 is closer. So, if we wanted to do this without the shell's help: perl -e '@ARGV= map {(split" ")[3]} grep /Parameter/, `lsnrctl stat ZRRI_LISTENER`; print while <>'

        - tye (but my friends call me "Tye")