$ cd /var/lib/cloud/instances/i-<インスタンスID>/
$ ls -al
total 68
drwxr-xr-x 5 root root 218 Jul 14 18:00 .
drwxr-xr-x 3 root root 33 Jul 14 17:59 ..
-rw-r--r-- 1 root root 59 Jul 14 18:00 boot-finished
-rw------- 1 root root 0 Jul 14 17:59 cloud-config.txt
-rw-r--r-- 1 root root 29 Jul 14 17:59 datasource
drwxr-xr-x 2 root root 6 Jul 14 17:59 handlers
-r-------- 1 root root 25855 Jul 14 17:59 obj.pkl
drwxr-xr-x 2 root root 22 Jul 14 17:59 scripts
drwxr-xr-x 2 root root 4096 Jul 14 18:00 sem
-rw------- 1 root root 9945 Jul 14 17:59 user-data.txt
-rw------- 1 root root 10288 Jul 14 17:59 user-data.txt.i
-rw------- 1 root root 0 Jul 14 17:59 vendor-data.txt
-rw------- 1 root root 345 Jul 14 17:59 vendor-data.txt.i
$ cat user-data.txt
=> userdataのスクリプト