NFSv4 mount incorrectly shows all files with ownership as nobody:nobody   https://access.redhat.com/solutions/33455  SOLUTION VERIFIED - Updated February 18 2016 at 5:48 PM -  English Environment Red Hat Enterprise Linux 5 Red Hat Enterprise Linux 6…

The Linux “du” (Disk Usage) is a standard Unix/Linux command, used to check the information of disk usage of files and directories on a machine. The du command has many parameter options that can be used to get the results in many formats. The du com…

今天在家折腾自己的小实验室,把自己NAS上的一个目录用NFS挂载到一套11g RAC的实验环境中. 当我在备份数据库到NAS上时,发现一个奇怪的问题,同样的目录下,默认backup 备份集的情况,备份是成功的,但如果使用backup as copy备份则会报错,现象如下: RMAN> backup datafile 6 format '/public/backup/oradb23/dbs_d_jingyu.bak'; Starting backup at 25-MAR-17 using chan…

1. tar压缩,解压缩 tar -cvf *** (压缩) tar -xvf ***  (解压缩) [root@bogon ~]# tar cvf test.tar test/ test/ test/hello [root@bogon ~]# ls anaconda-ks.cfg install.log install.log.syslog test test.tar [root@bogon ~]# tar xvf test.tar test/ test/hello [root@bogon ~…

1. Because of a power outage,instance failure has occurred. From what point in the redo log does recovery begin and where does it end?A. Current redo log and inactive redo logB. Checkpoint position to end of redo logC. Beginning of redo log to end of…

linux 命令中英文对照,收集   linux 命令英文全文 Is Linux CLI case-sensitive? The answer is, yes. If you try to run LS instead of ls, it would display an error. There are some advantages of using a case-sensitive command line. The computers that existed in earlier de…

转自http://get.jobdeer.com/493.get 1. tar command examples Create a new tar archive. $ tar cvf archive_name.tar dirname/ Extract from an existing tar archive. $ tar xvf archive_name.tar View an existing tar archive. $ tar tvf archive_name.tar More tar…

The most current version of this document can be obtained in My Oracle Support Knowledge Document 1375769.1. There is a change log at the end of this document. Note: Sharing the application tier file system is not supported on application tier server…

Python图像处理库 - Albumentations,可用于深度学习中网络训练时的图片数据增强. Albumentations 图像数据增强库特点: 基于高度优化的 OpenCV 库实现图像快速数据增强. 针对不同图像任务,如分割,检测等,超级简单的 API 接口. 易于个性化定制. 易于添加到其它框架,比如 PyTorch. 1. Albumentations 的 pip 安装 sudo pip install albumentations # 或 sudo pip install -U…

环境:openshift v3.6.173.0.5 openshift上devicemapper与官方文档中的描述略有不同,在官方文档的描述中,容器使用的lvm文件系统挂载在/var/lib/devicemapper下,因此可以在/var/lib/devicemapper/metadata中找到容器对应的devicemapper的配置信息,在/var/lib/devicemapper/mnt中可以看到容器的文件系统,描述如下: The /var/lib/docker/devicemapper/m…