lsof |grep delete
lsof(list system open file )可显示系统打开的文件，以root身份运行。
很多时候文件正在被占用，即使删除了，也无法释放空间，只有停 了进程 才能释放空间！！
l
[root@xxxWEB-INF]# lsof |grep delete zabbix_ag 1154 zabbix 1w REG 202,1 1732 3580 /var/log/zabbix/zabbix_agentd.log-20160827 (deleted) zabbix_ag 1154 zabbix 2w REG 202,1 1732 3580 /var/log/zabbix/zabbix_agentd.log-20160827 (deleted) zabbix_ag 1163 zabbix 1w REG 202,1 1732 3580 /var/log/zabbix/zabbix_agentd.log-20160827 (deleted) zabbix_ag 1163 zabbix 2w REG 202,1 1732 3580 /var/log/zabbix/zabbix_agentd.log-20160827 (deleted) zabbix_ag 1164 zabbix 1w REG 202,1 1732 3580 /var/log/zabbix/zabbix_agentd.log-20160827 (deleted) zabbix_ag 1164 zabbix 2w REG 202,1 1732 3580 /var/log/zabbix/zabbix_agentd.log-20160827 (deleted) zabbix_ag 1165 zabbix 1w REG 202,1 1732 3580 /var/log/zabbix/zabbix_agentd.log-20160827 (deleted) zabbix_ag 1165 zabbix 2w REG 202,1 1732 3580 /var/log/zabbix/zabbix_agentd.log-20160827 (deleted) zabbix_ag 1166 zabbix 1w REG 202,1 1732 3580 /var/log/zabbix/zabbix_agentd.log-20160827 (deleted) zabbix_ag 1166 zabbix 2w REG 202,1 1732 3580 /var/log/zabbix/zabbix_agentd.log-20160827 (deleted) zabbix_ag 1167 zabbix 1w REG 202,1 1732 3580 /var/log/zabbix/zabbix_agentd.log-20160827 (deleted) zabbix_ag 1167 zabbix 2w REG 202,1 1732 3580 /var/log/zabbix/zabbix_agentd.log-20160827 (deleted) salt-mini 1217 root 6w REG 202,1 595636 3571 /var/log/salt/minion-20160828 (deleted) bash 10269 root cwd DIR 202,16 0 8390131 /data1/apps/xxxx/webapps/bihi/WEB-INF (deleted) lsof 17325 root cwd DIR 202,16 0 8390131 /data1/apps/xxxxx/webapps/bihi/WEB-INF (deleted) grep 17326 root cwd DIR 202,16 0 8390131 /data1/appsxxx8/webapps/bihi/WEB-INF (deleted) lsof 17327 root cwd DIR 202,16 0 8390131 /data1/apps/xxxx/webapps/bihi/WEB-INF (deleted)