cp -Rp /etc/bin target/etc/
or (GNU only)
cp -a /etc/bin target/etc/
rsync -aAX /etc/bin target/etc/
or (classic unix)
find /etc/bin | cpio -pm target
or (classic unix, the other )
( cd / && tar -tf - etc/bin ) | (cd target && tar -xf - )
or (the POSIX replacement that few people seem to have heard of)
pax -rw -pe etc/bin target/etc/
All of these preserve traditional Unix metadata (permissions, timestamps¹, ownership if run as root². Depending on your system, they may or may not preserve additional metadata such as ACL and extended attributes (some of them may require additional options, e.g.
--acls --xattrs with GNU tar).
¹ Except for the ctime which can't be copied, and for directory atimes for some methods.
² Only root can preserve ownership.