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LOOK(1) 			   BSD General Commands Manual				  LOOK(1)

     look -- display lines beginning with a given string

     look [-dfa] [-t termchar] string [file]

     The look utility displays any lines in file which contain string as a prefix.  As look per-
     forms a binary search, the lines in file must be sorted (where sort(1) got the same options
     -d and/or -f that look is invoked with).

     If file is not specified, the file /usr/share/dict/words is used, only alphanumeric charac-
     ters are compared and the case of alphabetic characters is ignored.


     -d      Dictionary character set and order, i.e. only alphanumeric characters are compared.

     -f      Ignore the case of alphabetic characters.

     -a      Use the alternate dictionary /usr/share/dict/web2

     -t      Specify a string termination character, i.e. only the characters in string up to and
	     including the first occurrence of termchar are compared.

     The look utility exits 0 if one or more lines were found and displayed, 1 if no lines were
     found, and >1 if an error occurred.

     /usr/share/dict/words  the dictionary
     /usr/share/dict/web2   the alternate dictionary

     grep(1), sort(1)

     The original manual page stated that tabs and blank characters participated in comparisons
     when the -d option was specified.	This was incorrect and the current man page matches the
     historic implementation.

     Look appeared in Version 7 AT&T Unix.

BSD					  June 14, 1993 				      BSD
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