sed is a stream editor. A stream editor is used to perform basic text transformations on an input stream (a file or input from a pipeline).
Sed-3.02 needs the following to be installed:
bash: sh
binutils: ar, as, ld
diffutils: cmp
fileutils: chmod, cp, ls, mv, rm
gcc: cc
grep: egrep, grep
make: make
sed: sed
sh-utils: basename, expr, sleep
textutils: cat, tr