Look

LOOK(1) - General Commands Manual

Grep, Sort, Look

LOOK(1) - General Commands Manual # LOOK(1) - General Commands Manual NAME # look - display lines beginning with a given string SYNOPSIS # look [-df] [-t termchar] string [file] DESCRIPTION # 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. ...

SPELL(1) - General Commands Manual

Tee, Look, Deroff, Sed, Sort, Spell

SPELL(1) - General Commands Manual # SPELL(1) - General Commands Manual NAME # spell - find spelling errors SYNOPSIS # spell [-biltvx] [-d list] [-h spellhist] [-m a | e | l | m | s] [-s list] [+extra_list] [file …] DESCRIPTION # spell collects words from the named documents and looks them up in a spelling list. Words that neither occur among nor are derivable (by applying certain inflections, prefixes or suffixes) from words in the spelling list are printed on the standard output. ...