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LOOK(1)                     General Commands Manual                    LOOK(1)

     look - display lines beginning with a given string

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

     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

     If file is not specified, the file /usr/share/dict/words is used, only
     alphanumeric characters 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.

     -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

     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.

     grep(1), sort(1)

     look appeared in Version 7 AT&T UNIX.

NetBSD 8.0                       June 14, 1993                      NetBSD 8.0