查看外部数据[postgres@pg1 ~]$ cat b.txt 3,cc登陆postgresql数据库[postgres@pg1 ~]$ psql -d mydb创建表mydb=# create table t1 (id int4,name varchar(20));导入数据mydb=# copy t1 from '/home/postgres/b.txt' (delimiter ',');查
备份/etc/yum.repos.d中的文件cd/etc/yum.repos.dtouchCentOS-Base.repovimCentOS-Base.repomount/dev/cdrom/mnt挂载镜像文件[BaseOS]name=CentOS-BaseOSbaseurl=file:///mnt/BaseOSgpgcheck=0enabled=1[APP]name=CentOS-APPbase
第一步：运行脚本[root@localhost~]#foriinbcddo/usr/lib/udev/scsi_id-g-u-d/dev/sd$idone第二步：编译配置文件/etc/udev/rules.d/99-oracle-asmdevices.rulesKERNEL=="sd*[!0-9]",ENV{DEVTYPE}=="disk",SUBSYSTE
$sudogedit/etc/lightdm/lightdm.conf添加如下的内容，重新启动，登陆中用root登陆：[SeatDefaults]autologin-user=rootgreeter-session=unity-greeteruser-session=ubuntugreeter-show-manual-login=trueallow-guest=false
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