B
Size: a a a
B
B
B
B
VP
S
WI
├── A
│ └── awesome.json
├── B
│ └── bananas.json
├── C
│ └── coronavirus.json
└── D
└── dog-house.json
AP
VP
ls -1|xargs -i sh -c 'mkdir -p $(basename {}|grep -Eo "^.{1}")&&mv {} $(basename {}|grep -Eo "^.{1}")'
VP
S
ls -1|xargs -i sh -c 'mkdir -p $(basename {}|grep -Eo "^.{1}")&&mv {} $(basename {}|grep -Eo "^.{1}")'
VP
S
S