# phpman > man > blib(3pm)

## NAME
    blib - Use MakeMaker's uninstalled version of a package

## SYNOPSIS
     perl -Mblib script [args...]

     perl -Mblib=dir script [args...]

## DESCRIPTION
    Looks for MakeMaker-like *'blib'* directory structure starting in *dir* (or current directory)
    and working back up to five levels of '..'.

    Intended for use on command line with -M option as a way of testing arbitrary scripts against an
    uninstalled version of a package.

    However it is possible to :

     use blib;
     or
     use blib '..';

    etc. if you really must.

## BUGS
    Pollutes global name space for development only task.

## AUTHOR
    Nick Ing-Simmons <nik@tiuk.ti.com>