Quick and dirty answer:

ls -l *.TMP | perl -anle 'print "Mypath\\MyPerl_2.pl $F[-1]"'

You can replace 'print' by system to execute commands. Caveat: if a filename contains a whitespace, this oneliner is wrong.

Here, the real code executed (oneliners are not easy for beginners):

$ perl -MO=Deparse -anle 'print "Mypath\\MyPerl_2.pl $F[-1]"'
BEGIN { $/ = "\n"; $\ = "\n"; }
LINE: while (defined($_ = <ARGV>)) {
    chomp $_;
    our(@F) = split(' ', $_, 0);
    print "Mypath\\MyPerl_2.pl $F[-1]";
}
[download]

As you can see, it use split.

You could want to use open to open a file.

http://perldoc.perl.org/perlop.html#I%2fO-Operators to understand while ( ... = <>)

And see how regex works in perlretut...