Actually not that small:
| Language | files | Blanks | Comments | Lines of code |
|---|---|---|---|---|
| C | 679 | 27644 | 61108 | 181635 |
| Bourne Shell | 184 | 1649 | 1518 | 9143 |
| C/C++ Header | 65 | 1294 | 2522 | 6080 |
| HTML | 9 | 420 | 32 | 3934 |
| C++ | 1 | 166 | 62 | 1197 |
| make | 7 | 309 | 466 | 914 |
| Glade | 1 | 56 | 0 | 592 |
| yacc | 1 | 93 | 20 | 570 |
| Perl | 3 | 100 | 185 | 337 |
| lex | 1 | 40 | 12 | 303 |
| NAnt script | 1 | 84 | 0 | 260 |
| Bourne Again Shell | 5 | 51 | 94 | 238 |
| Python | 1 | 12 | 15 | 113 |
| IDL | 1 | 0 | 0 | 33 |
| awk | 1 | 2 | 8 | 30 |
| bc | 1 | 10 | 0 | 25 |
| diff | 1 | 1 | 8 | 15 |
Get source with git clone https://git.busybox.net/busybox/ or from here