drwxr-xr-x    8 peterfoo  staff   272B 17 may 09:48 app1-data/
drwxr-xr-x    3 peterfoo  staff   102B 25 may 12:38 app2-data/
drwxr-xr-x    7 peterfoo  staff   238B 25 abr 10:35 app3-data/

$ sudo chown mysql:mysql /data/app1-data
$ ls -l /data | grep app1
drwxr-xr-x    8 peterfoo  staff   272B 17 may 09:48 app1-data/

$ sudo chmod 777 /data/app1-data
$ ls -l /data | grep app1
drwxrwxrwx    8 peterfoo  staff   272B 17 may 09:48 app1-data/
$ su user2
$ touch test.txt
$ mkdir /data/app1-data/test
$ ls -l /data/app1-data/
drwxrwxrwx 1 peterfoo staff 204 May 25 12:38 ./
drwxrwxr-x 1 peterfoo staff 510 May 24 14:29 ../
-rw-r--r-- 1 peterfoo staff   0 May 25 08:07 test.txt
drwxr-xr-x 1 peterfoo staff  68 May 25 12:38 test/