MirBSD manpage: look(1)

LOOK(1)                      BSD Reference 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 sort-

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

     The options are as follows:

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

     -f      Ignore the case of alphabetic characters.

     -t termchar
             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, or >1 if an error occurred.


     /usr/share/dict/words  the dictionary


     grep(1), sort(1)


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


     The look command appeared in Version 7 AT&T UNIX.

MirBSD #10-current              June 14, 1993                                1

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