look - display lines beginning with a given string SYNOPSIS
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 original manual page stated that tabs and blank charac- ters participated in comparisons when the -d option was specified. This was incorrect and the current man page matches the historic implementation. HISTORY
Look appeared in Version 7 AT .