a. 用户名 system 密码 manager 导出到D:/daochu.dmp中 exp system/manager@SID file=d:/daochu.dmp full=y b. 将数据库中 system 用户与 sys 用户的表导出 exp system/manager@SID file=d:/daochu.dmp owner=(system,sys) c. 将数据库中的表 inner_notify.notify_staff_relat导出 exp aichannel/aichann
linux的man页中对gettimeofday函数的说明中,有这样一个说明: $ man gettimeofday DESCRIPTION The functions gettimeofday and settimeofday can get and set the time as well as a timezone. The tv argument is a timeval struct, as specified in <sys/time.h>:
[root@localhost ~]# cat /etc/fstab ## /etc/fstab# Created by anaconda on Wed Oct 5 15:21:46 2016## Accessible filesystems, by reference, are maintained under '/dev/disk'# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info#/dev/
1.先apt-get update一下当前默认的源,更新完成后先把vim命令安装一下,再修改源仓库为阿里云,否则无法直接编辑文件 2.先添加阿里云的源,编辑文件/etc/apt/sources.list,编辑完再次更新一下 deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ bionic-security main