##
$ grep -i '^version' /usr/lib/x86_64-linux-gnu/perl/5.26/Data/Dumper.pm
Version 2.167 (January 4 2017)
$
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$ perl -MData::Dumper -de 1
Loading DB routines from perl5db.pl version 1.51
Editor support available.
Enter h or 'h h' for help, or 'man perldebug' for more help.
main::(-e:1): 1
DB<1>