Section: User Commands (1)
The utility displays any lines in file which contain string as a prefix.
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 following options are available:
- Use a binary search on the given word list. If you are ignoring case with -f or ignoring non-alphanumeric characters with -d the file must be sorted in the same way. Please note that these options are the default if no filename is given. See sort?(1) for more information on sorting files.:
- Dictionary character set and order, i.e., only alphanumeric characters are compared.:
- Ignore the case of alphabetic characters.:
- Specify a string termination character, i.e., only the characters in string up to and including the first occurrence of termchar are compared.:
- 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.
Lines are not compared according to the current locale's collating order. Input files must be sorted with LC_COLLATE set to `C'