The spell(1) utility compares words from one or more
files specified in file (or standard input if no files are
named) with those in a spelling list. It writes to standard output
all words that were not found on the list.
The spell(1) utility takes the following options:
-b
Check against a British dictionary. The default dictionary is
American English. The British dictionary contains spellings such as
colour, behaviour, and recognise.
-v
Write all words not in the spelling list. This is the default
behavior. Some implementations of spell(1) also check
against possible permutations of the words in the spelling list;
for those systems, this option turns off that behavior.
-x
Display root stems of words as =.
+local_dict
Treat the words in the file local_dict as correctly spelled.
They will not appear in the spell(1) output. These words are
checked in addition to the usual dictionary file.
The spell(1) command is a wrapper around the
ispell(1) command. For information on dictionary files,
formats, and other options that might be supported, see the
reference page for ispell(1).