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$ sudo perl -V > sudoV.txt
$ perl -V > V.txt
$ diff V.txt sudoV.txt
$

sudo perl -V
Summary of my perl5 (revision 5 version 8 subversion 8) configuration:
...
    /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi
    /usr/lib/perl5/5.8.8
    .

$ whereis perl
perl: /usr/bin/perl /usr/local/bin/perl /opt/admin/bin/perl /usr/share
+/man/man1/perl.1.gz
...
lrwxrwxrwx 1 root root    13 Apr 10 16:38 /opt/admin/bin/perl -> /usr/
+bin/perl
-rwxr-xr-x 2 root root 19208 Dec 16  2011 /usr/bin/perl
lrwxrwxrwx 1 root root    13 Apr 27 14:01 /usr/local/bin/perl -> /usr/
+bin/perl