3
look \- find lines in a sorted list
19
and prints all lines that begin with
21
It uses binary search.
23
The following options are recognized.
26
affect comparisons as in
35
takes lines from the standard input as strings to be looked up.
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Print only lines of the file whose key matches
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tabs and blanks participate in comparisons.
50
Upper case letters compare equal to lower case.
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Numeric comparison with initial string of digits, optional minus sign,
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and optional decimal point.
59
terminates the sort key in the
61
By default, tab terminates the key. If
63
is missing the entire line comprises the key.
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is assumed, with collating sequence
81
if no match is found, and
82
.RB `` "no dictionary" ''
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or the default dictionary cannot be opened.