/usr/share/dict/words
the dictionary
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 sorted.
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.
The options are as follows:
-d
Dictionary character set and order, i.e., only alphanumeric characters 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.
/usr/share/dict/words
the dictionary
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.
61 releases since OpenBSD 2.1; the text changed 6 times.