gistfile1.sh

zipizap@lnxp:/tmp/depth0$ tree --charset ascii
.
|-- A_depth1
|   `-- A_depth2
|       `-- A_depth3
|-- B_depth1
|   `-- B_depth2
|       `-- B_depth3
`-- C_depth1
    `-- C_depth2
        `-- C_depth3

9 directories, 0 files

# find --maxdepth <0=no-subdirs,1,2,...>
zipizap@lnxp:/tmp/depth0$ find . -maxdepth 0
.

zipizap@lnxp:/tmp/depth0$ find . -maxdepth 1
.
./A_depth1
./C_depth1
./B_depth1

zipizap@lnxp:/tmp/depth0$ find . -maxdepth 2
.
./A_depth1
./A_depth1/A_depth2
./C_depth1
./C_depth1/C_depth2
./B_depth1
./B_depth1/B_depth2

zipizap@lnxp:/tmp/depth0$ find . -maxdepth 3
.
./A_depth1
./A_depth1/A_depth2
./A_depth1/A_depth2/A_depth3
./C_depth1
./C_depth1/C_depth2
./C_depth1/C_depth2/C_depth3
./B_depth1
./B_depth1/B_depth2
./B_depth1/B_depth2/B_depth3