Unknown alias in ksh script problem.

[Paul Dineen]

 When I pipe to an alias in a ksh script, the alias definition is always
 unknown.  For example:

   $ alias bigfiles='sort -r +4'
   $ cat >script
   #!/bin/ksh
   ll | bigfiles
   ^D
   $ script
   ./script[2]: bigfiles:  not found

 When the line "ll | bigfiles" is executed from the keyboard, there is
 no problem.
 Wha' happen?

 Thanks.