Mac OS X Tiger in a Nutshell

Text Processing

Command	Use
col	Process control characters.
cut	Select columns for display.
emacs	Work environment with powerful text editing capabilities.
ex	Line editor underlying vi .
expand	Convert tabs to spaces.
fmt	Produce roughly uniform line lengths.
fold	Break lines.
groff	Format troff input.
join	Merge different columns into a database.
paste	Merge columns or switch order.
rev	Print lines in reverse.
sed	Noninteractive text editor.
sort	Sort or merge files.
tr	Translate (redefine) characters.
uniq	Find repeated or unique lines in a file.
vi	Visual text editor.
xargs	Process many arguments in manageable portions.