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:
autoconf: autoconf, autoheader
automake: aclocal, automake
bash: sh
binutils: ar, as, ld, ranlib
diffutils: cmp
fileutils: chmod, install, ls, mv, rm
gcc: cc1, collect2, cpp0, gcc
glibc: getconf
grep: egrep, fgrep, grep
m4: m4
make: make
mawk: mawk
sed: sed
sh-utils: echo, expr, hostname, sleep
texinfo: install-info, makeinfo
textutils: cat, tr