Opensuse 12.2 how can i check if i do run one or two versio

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-gentlemen,

i run opensuse 12.2

note - i have serous troubles with some modules. Well

i think that can be caused of some messi perl-installation:

opensuse 12.2 how can i check if i do run one or two versions of Perl?!

can i check this via yast or commandline!?