C:\Users\NV>adb shell
$ uname -a
uname -a
Linux localhost 2.6.29-hack #2 PREEMPT Sat Dec 4 14:31:09 JST 2010 armv7l GNU/Linux
$ exit
exit

C:\Users\NV>adb root
restarting adbd as root

C:\Users\NV>adb shell
# cat /proc/sys/kernel/modules_disabled
cat /proc/sys/kernel/modules_disabled
0
# getprop ro.debuggable
getprop ro.debuggable
1
#

C:\Users\NV>adb shell
# ls -l /dev/*mem
ls -l /dev/*mem
crw-rw-rw- root     root      10,  41 2010-12-04 15:11 ashmem
crw------- root     root       1,   2 2010-12-04 15:11 kmem
crw------- root     root       1,   1 2010-12-04 15:11 mem
crw-rw---- system   graphics  10,   0 2010-12-04 15:11 pmem
# mount -o rw,remount /system
mount -o rw,remount /system
# mount
mount
rootfs on / type rootfs (rw)
tmpfs on /dev type tmpfs (rw,mode=755)
devpts on /dev/pts type devpts (rw,mode=600)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
tmpfs on /sqlite_stmt_journals type tmpfs (rw,size=4096k)
tmpfs on /obex_data_tmp type tmpfs (rw)
tmpfs on /bkrs_data_tmp type tmpfs (rw)
tmpfs on /sphinx_tmp type tmpfs (rw)
tmpfs on /sdservice_tmp type tmpfs (rw)
/dev/block/mtdblock7 on /sqlite_journals type yaffs2 (rw)
tmpfs on /sh_tmp type tmpfs (rw)
/dev/block/mtdblock5 on /system type yaffs2 (rw)
/dev/block/mmcblk0p1 on /data type ext3 (rw,nosuid,nodev,data=ordered)
/dev/block/mmcblk0p2 on /data/ro type ext3 (ro,nosuid,nodev,data=ordered)
/dev/block/mtdblock1 on /cache type yaffs2 (rw,nosuid,nodev)
# cd /system
cd /system
# touch test
touch test
# ls -l test
ls -l test
-rw-rw-rw- root     root            0 2010-12-04 15:20 test
#