.TH LOOK 1
.SH NAME
look \- find lines in a sorted list
.SH SYNOPSIS
.B look
.RB [ \-df ]
.I string
.RI [ file ]
.SH DESCRIPTION
.B Look
consults a sorted file and prints all lines that begin with
.IR string .
It uses binary search.  The options
.B \-d
and
.B \-f
affect comparisons as in
.BR sort (1).
If no file is specified,
.B /usr/lib/dict/words
is assumed with collating sequence
.BR \-df .
.SH OPTIONS
.TP 5
.B \-d
Dictionary order: compare letters, digits and whitespace.
.TP 5
.B \-f
Fold. Upper case letters compare equal to lower case.
.SH FILES
.TP 25
.B /usr/lib/dict/words
Sorted list of English words.
.SH "SEE ALSO"
.BR sort (1),
.BR spell (1).
.SH AUTHOR
Kees J. Bot (kjb@cs.vu.nl)