`which'
-------

which("FILENAME")
     ::  FILENAME ɑ΂, `load()' ǂݍރpXԂ.

RETURN
     pX
FILENAME
     t@C (pX) ܂ 0

   * `load()' t@CT[`菇ɏ]ăT[`, t@C
     ݂ꍇɂ̓pX𕶎Ƃ, ݂Ȃꍇɂ 0 Ԃ.
   * T[`̎菇ɂĂ `load()' Q.

     [0] which("gr");               
     ./gb/gr
     [1] which("/usr/local/lib/gr");
     0
     [2] which("/usr/local/lib/asir/gr");
     /usr/local/lib/asir/gr

Q
     `load'

