We use the phrase “the whole shebang” today to mean “the whole thing” or “all of it.” The word “shebang” originates from the Confederacy during the American Civil War. The Confederate army would often set up camp in haste, and they would fail to come up with properly constructed tents or structures. They borrowed the word “shebang” from the original Irish word “shebeen,” which basically means “rustic or makeshift dwelling,” which perfectly described most of the structures in their camps. Because of the poor quality of all their structures, the term “shebang” was used to refer to everything from tents, cabins, shops, huts, armories, and engine houses.
The term spread across America after the war, and it was used to describe living quarters such as student dormitories that were seen as low quality. Toward the end of the 19th century, there were many expressions used in different parts of America that started with “the whole.” These include “the whole enchilada,” and “the whole nine yards.”
“The whole shebang” emerged as one such phrase. The word “shebang” actually had nothing to do with “wholeness;” it was just used because it made a catchy phrase. The phrase stuck around, and today, its meaning is universally understood, even though most people have no idea what “shebang” means.