noun

• (informal, US, archaic) A lean-to or temporary shelter.
  "Their shebang enclosures of bushes."
• (informal, US, archaic) A place or building; a store, saloon, or brothel.
  "Along all the roads on the reservation to all the mines, at the crossing of every stream or fresh-water spring, and near the principal Indian villages, an inn or shebang is established, ostensibly for the entertainment of travellers, but almost universally used as a den for supplying liquor to Indians.""
• (informal) Any matter of present concern; thing; or business; most commonly in the phrase "the whole shebang".
  "On the third the whole "chebang" was removed [...]"
• (informal, obsolete) A vehicle.
  "[…] So they got into the empty omnibus and sat down. Colonel Jack says: “...What is the name of this.” Colonel Jim told him it was a barouche. After a while he poked his head out in front and said to the driver, “I say, Johnny, this suits me. We want this shebang all day. Let the horses go.”"

noun

• (computing) The character string "#!" used at the beginning of a computer file to indicate which interpreter can process the commands in the file, chiefly used in Unix and related operating systems.