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$ cd /some/base/work/dir
$ mkdir DateTime
$ cd DateTime

$ wget http://search.cpan.org/CPAN/authors/id/D/DR/DROLSKY/DateTime-1.
+41.tar.gz
$ tar zxvf DateTime-1.41.tar.gz > DateTime-1.41.INSTALL 2>&1
$ view DateTime-1.41.INSTALL  # Check there's no errors
$ cd DateTime-1.41

$ view README  # That's "README.md" for this distro
$ view INSTALL

$ cd lib
$ vi DateTime.pm

$ cd ../t
$ vi new_test.t

$ cd ..
$ perl Makefile.PL
$ make
$ make test

$ make realclean
$ # ... repeat commands already shown ...