$ perl -v
This is perl, v5.8.8 built for i386-linux-thread-multi

##</code><code>##

$ head `which cpan`
#!/usr/bin/perl

eval 'exec /usr/bin/perl  -S $0 ${1+"$@"}'
    if 0; # not running under some shell

$ /usr/bin/perl -v
This is perl, v5.8.8 built for i386-linux-thread-multi