enhanced backtrace output
tree88f7ccce0f05c8c72d66d75e15abef30b1a8cc50
-rw-r--r-- 33261 .bochsrc
-rw-r--r-- 1115 CODING
-rw-r--r-- 4555 GNUmakefile
drwxr-xr-x - boot
drwxr-xr-x - conf
-rw-r--r-- 1603 grade.sh
drwxr-xr-x - inc
drwxr-xr-x - kern
drwxr-xr-x - lib
-rw-r--r-- 2331 mergedep.pl
drwxr-xr-x - user