Bash shell uses a yacc grammar for parsing the command input.

Some people collect the shells to use them for crafts or for decorative purposes.

This shell used the M56 point detonating fuse.

However, special shells may use other shapes.

A lampare shell has the flash powder used in a regular salute, but is filled with a flammable liquid.

Bursting shells use various types of fuze depending on the nature of the payload and the tactical need at the time.

Each shell used 318 pounds of powder, but this was varied depending on range.

Microexplosive shells from projectile weapons like those used by the attackers at the farm on Earth.

Larger shells were used for hoes as well as worked into ornaments or utensils.

Its distinctive midden, once featured on the city seal, would disappear, the shells used to pave streets and sidewalks.