1 For example: service httpd restart This will issue a restart command to Apache.  The second would be to directly interact with the init script on the server. An example of this would be, /etc/init.d/httpd restart This will issue a restart command to Apache.
Definition[edit] Masonry is the craft of shaping rough pieces of rock into accurate geometrical shapes, at times simple, but some of considerable complexity, and then arranging the resulting stones, often together with mortar, to form structures.
Masonry consists of building structures by laying individual masonry units (brick, concrete block, stone, etc). Normally the masonry units are laid with cement mortar, which binds them together to create a structure. Masonry construction can provide beautiful walls and floors at economical prices. Due to the individual masonry units, masonry construction tends to be quite labor intensive. Because of the cement, clay or stone nature of the masonry materials, masonry construction tends to be durable and often requires little maintenance. An excellent introduction to the basics skills and concepts of masonry work is found in the US Navy Builder Training Course Volume #1.