shell技巧:获取uuid

root@compute01:~# cat /proc/sys/kernel/random/uuid

2f06ae36-9838-4cb7-897f-7c3c3de7bee8

root@compute01:~# cat /proc/sys/kernel/random/uuid

0c857ea1-1bce-4ead-8a7f-5a6492c427cd

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