I'm not really sure what do you mean. Is look the look(1), "display lines beginning with a given string" one ?

Within the CPAN shell "look" will extract the archive and give you a shell prompt. For example:

cpan> look Test::Exception
Running look for module Test::Exception

Trying to open a subshell in the build directory...
Working directory is /Users/adrianh/.cpan/build/Test-Exception-0.25
(1/501) ~/.cpan/build/Test-Exception-0.25 mitchum% ls
Build.PL        Changes         MANIFEST        META.yml        Makefi
+le.PL     README          lib             t

[download]

In reply to Re^3: how to re-run Makefile.PL under CPAN? by adrianh
in thread how to re-run Makefile.PL under CPAN? by dk

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