$ uname  
2.6.2-rc2-mm1
$ sloccount /usr/src/linux
...
...
SLOC    Directory       SLOC-by-Language (Sorted)
1842133 drivers         ansic=1836095,asm=2637,yacc=1651,perl=829,lex=763,
                        sh=158
707480  arch            ansic=524361,asm=182363,sh=622,awk=59,python=45,
                        perl=30
378773  include         ansic=378393,cpp=289,asm=91
356544  fs              ansic=356544
299527  sound           ansic=299342,asm=185
230682  net             ansic=230682
20952   kernel          ansic=20952
15438   scripts         ansic=10321,perl=1583,cpp=1321,yacc=950,lex=750,
                        sh=513
15223   mm              ansic=15223
11203   security        ansic=11203
8446    crypto          ansic=8446
7237    lib             ansic=7237
2797    ipc             ansic=2797
2435    Documentation   ansic=1184,sh=968,lisp=218,perl=65
1960    init            ansic=1960
199     usr             ansic=197,asm=2
0       top_dir         (none)
 
 
Totals grouped by language (dominant language first):
ansic:      3704937 (94.97%)
asm:         185278 (4.75%)
yacc:          2601 (0.07%)
perl:          2507 (0.06%)
sh:            2261 (0.06%)
cpp:           1610 (0.04%)
lex:           1513 (0.04%)
lisp:           218 (0.01%)
awk:             59 (0.00%)
python:          45 (0.00%)
 
 
Total Physical Source Lines of Code (SLOC)                = 3,901,029
Development Effort Estimate, Person-Years (Person-Months) = 1,179.69 (14,156.29)
 (Basic COCOMO model, Person-Months = 2.4 * (KSLOC**1.05))
Schedule Estimate, Years (Months)                         = 7.87 (94.47)
 (Basic COCOMO model, Months = 2.5 * (person-months**0.38))
Estimated Average Number of Developers (Effort/Schedule)  = 149.85
Total Estimated Cost to Develop                           = $ 159,360,162
 (average salary = $56,286/year, overhead = 2.40).
SLOCCount is Open Source Software/Free Software, licensed under the FSF GPL.
Please credit this data as "generated using David A. Wheeler's 'SLOCCount'."
$