Nexus6 を root 化した。

~ $ fastboot oem unlock
...
(bootloader) Please select 'YES' on screen if you want to continue...
(bootloader) Unlocking bootloader...

(bootloader) Unlock completed! Wait to reboot

OKAY [ 66.046s]
finished. total time: 66.046s
~ $ fastboot flash recovery /Users/xueli/Downloads/twrp-2.8.7.1-shamu.img
target reported max download size of 536870912 bytes
sending 'recovery' (11700 KB)...
OKAY [  0.430s]
writing 'recovery'...
OKAY [  0.193s]
finished. total time: 0.623s
~ $

　なんかあっけなかったw
　HTC 機で痛い目をみたのでカスタムロムを入れる予定はありません。