26-OCT-2017 23:40:33 * service_update * orcl * 0 [oracle@e7bd4e34ce20 admin]$ tail -f /u01/app/oracle/diag/tnslsnr/e7bd4e34ce20/listener/alert/log.xml host_addr='172.17.0.2'> 26-OCT-2017 23:40:24 * service_register * orcl * 0 26-OCT-2017 23:40:33 * service_update * orcl * 0 tail: unrecognized file system type 0x794c7630 for '/u01/app/oracle/diag/tnslsnr/e7bd4e34ce20/listener/alert/log.xml'. please report this to bug-coreutils@gnu.org. reverting to polling