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LOOK(1) General Commands Manual LOOK(1) NAME look - find lines in a sorted list SYNOPSIS look [ -dfnixtc ] [ string ] [ file ] DESCRIPTION Look consults a sorted file and prints all lines that begin with string. It uses binary search. The following options are recognized. Options dfntc affect comparisons as in sort(1). -i Interactive. There is no string argument; instead look takes lines from the standard input as strings to be looked up. -x Exact. Print only lines of the file whose key matches string exactly. -d `Directory' order: only letters, digits, tabs and blanks partic- ipate in comparisons. -f Fold. Upper case letters compare equal to lower case. -n Numeric comparison with initial string of digits, optional minus sign, and optional decimal point. -tc `Tab character' c terminates the sort key in the file. If no file is specified, is assumed, with collating sequence df. FILES SEE ALSO sort(1), gre(1), dict(7) DIAGNOSTICS Look returns exit status 0 if string is found, 1 if not found, 2 for error. LOOK(1)