look(1) [v7 man page]

LOOK(1) 						      General Commands Manual							   LOOK(1)

NAME

       look - find lines in a sorted list

SYNOPSIS

       look [ -df ] string [ file ]

DESCRIPTION

       Look consults a sorted file and prints all lines that begin with string.  It uses binary search.

       The options d and f affect comparisons as in sort(1):

       d   `Dictionary' order: only letters, digits, tabs and blanks participate in comparisons.

       f   Fold.  Upper case letters compare equal to lower case.

       If no file is specified, /usr/dict/words is assumed with collating sequence -df.

FILES

       /usr/dict/words

SEE ALSO

       sort(1), grep(1)

																	   LOOK(1)

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

NAME

     look -- display lines beginning with a given string

SYNOPSIS

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

DESCRIPTION

     The look utility displays any lines in file which contain string as a prefix.  As look performs 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 characters are compared and the case of alphabetic char-
     acters is ignored.

     Options:

     -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.

FILES

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

SEE ALSO

     grep(1), sort(1)

COMPATIBILITY

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

HISTORY

     Look appeared in Version 7 AT&T Unix.

BSD
								   June 14, 1993							       BSD