$ cd ../oldp5p
$ cat abc.pl
print "hello world\n";
print "goodbye world\n";
$ perl abc.pl
hello world
goodbye world
$ perl -d abc.pl
hello world
goodbye world
Var=

##</code><code>##

$ cd ..
$ rmtree1.pl p5p
$ mkdir p5p
$ cp -v oldp5p/abc.pl p5p
'oldp5p/abc.pl' -> 'p5p/abc.pl'
$ cd p5p
$ perl abc.pl
hello world
goodbye world
$ perl -d abc.pl

Loading DB routines from perl5db.pl version 1.49_04
Editor support available.

Enter h or 'h h' for help, or 'man perldebug' for more help.

main::(abc.pl:1):	print "hello world\n";
  DB<1> q