http://www.cnblogs.com/xiaoluo501395377/archive/2013/04/07/3003278.html Quick Guide: yum install -y mysql-server mysql mysql-deveservice mysqld start chkconfig mysqld on /usr/bin/mysqladmin -u root password 'root' //... Read More | Share it now!
Monthly Archives: January 2016
Centos 查看系统启动时间和运行时间
1.uptime命令 uptime 输出:16:11:40 up 59 days, 4:21, 2 users, load average: 0.00, 0.01, 0.00 如下图所示: 2.查看/proc/uptime文件计算系统启动时间 cat /proc/uptime 输出: 5113396.94... Read More | Share it now!
Hive：简单查询不启用Mapreduce job而启用Fetch task
如果你想查询某个表的某一列，Hive默认是会启用MapReduce Job来完成这个任务，如下： 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 hive> SELECT id,... Read More | Share it now!
CentOS 修改IP地址, DNS, 网关
一、CentOS 修改IP地址 修改对应网卡的IP地址的配置文件 # vi /etc/sysconfig/network-scripts/ifcfg-eth0 修改以下内容 DEVICE=eth0 #描述网卡对应的设备别名，例如ifcfg-eth0的文件中它为eth0 BOOTPROTO=static... Read More | Share it now!
What is a keytab, and how do I use one?
On this page: Introduction Creating a keytab file Using a keytab to authenticate scripts Listing the keys in a keytab file Deleting a key from a keytab file Merging keytab files Copying a keytab file to another computer Introduction A keytab is a... Read More | Share it now!
Hortonworks installer RHEL/CentOS/Oracle Linux 6
http://docs.hortonworks.com/HDPDocuments/Ambari-2.2.0.0/bk_Installing_HDP_AMB/content/_download_the_ambari_repo_lnx6.html Before installing Hortonworks, please set up your Centos Envirenment: ... Read More | Share it now!
Bash Shell中命令行选项/参数处理
0.引言 写程序的时候经常要处理命令行参数，本文描述在Bash下的命令行处理方式。 选项与参数： 如下一个命令行： ./test.sh -f config.conf -v –prefix=/home 我们称-f为选项，它需要一个参数，即config.conf,... Read More | Share it now!