Banjo Caug chord (Open G)C augmented on the 5-string banjo: 2 1 1 2, and 3 more shapes

Frets, string 4 to string 1: 2 1 1 2 (first position)

1. String 4 (D): 2nd fret, middle finger, E
2. String 3 (G): 1st fret, index finger (barre), G♯
3. String 2 (B): 1st fret, index finger (barre), C
4. String 1 (D): 2nd fret, ring finger, E
5. String 5, the short g: open, G, not in the chord

Sounds: E G♯ C E  ·  Caug is C, E, G♯ (1 · 3 · ♯5)

The 5th string: the short g rubs against the G♯ in this shape, a semitone away: some players let it ring, some skip it.

With a capo: on the 5th fret it’s 1 0 0 1 (frets counted from the capo), an open Gaug shape. Spike the 5th string at the 10th fret to keep it in tune with the capo.

Open G tuning: gDGBD, the short 5th string first, then strings 4 to 1.