ls -lh /var/lib/mysql

-rw-rw----    1 mysql    mysql         10M Jan 25 21:05 ibdata1
-rw-rw----    1 mysql    mysql        5.0M Jan 25 21:05 ib_logfile0
-rw-rw----    1 mysql    mysql        5.0M Jan 25 20:44 ib_logfile1
drwx--x--x    2 mysql    mysql        4.0K Jan 25 20:44 mysql
srwxrwxrwx    1 mysql    mysql           0 Jan 25 22:40 mysql.sock
drwxr-xr-x    2 mysql    mysql        4.0K Jan 25 20:44 test


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ps -Af | grep mysql

root      3909  3380  0 22:45 pts/0    00:00:00 grep mysql