1.use root account
http://blog.csdn.net/sunxiaoju/article/details/51993091
http://blog.csdn.net/gongchenyu/article/details/51337339
2.chrome
http://www.linuxidc.com/Linux/2016-05/131096.htm
http://blog.csdn.net/lihaoyang11/article/details/54572565
3.vmware
http://www.cnblogs.com/h2zZhou/p/5440271.html
4.kvm
http://blog.csdn.net/c80486/article/details/42836169
5.flash
http://blog.csdn.net/junbujianwpl/article/details/51587847
6.hadoop
http://www.cnblogs.com/NextNight/p/6703362.html

ssh-keygen -t rsa
ssh-copy-id [email protected]
7.putty
粘貼:單機鼠標滑輪，這是gnome的功能，不是putty特有的功能
8.centos7 支持ifconfig
yum provides ifconfig
yum install net-tools
9.網絡操作:
查看geteway:netstat -rn
查看DNS cat /etc/resolv.conf
centos7設置hostname:hostnamectl --static set-hostname centos7

配置網關:route add default gw 192.168.122.1 dev eth0

(這個問題折騰了很長時間)centos nta模式下設置靜態ip，不能訪問外網的原因是網關不對，使用下面命令進行設置:
route add default gw 192.168.122.1 dev eth0
上面的命令重啟後就無效
所以修改/etc/sysconfig/network文件持久設置GATEWAY=192.168.122.1，參見:http://blog.csdn.net/jcxch/article/details/48632761

10.網卡設置
TYPE=Ethernet
BOOTPROTO=static
DEFROUTE=yes
PEERDNS=yes
PEERROUTES=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=eth0
UUID=173323da-69e3-4117-abf0-d04b03bd0a5a
DEVICE=eth0
ONBOOT=yes

IPADDR=192.168.122.11
NETMASK=255.255.255.0
GETEWAY=192.168.122.1
DNS=192.168.122.1

11.關閉防火墻，關閉selinux
systemctl stop firewalld.service
systemctl disable firewalld.service
sed -i ‘s/SELINUX=enforcing/SELINUX=disabled/‘ /etc/selinux/config
grep SELINUX=disabled /etc/selinux/config
setenforce 0
12.測試hadoop執行
bin/hdfs dfs -put /etc/profile /profile
bin/hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.8.1.jar wordcount /profile /out
bin/hdfs dfs -cat /out/part-r-00000
13.解壓zip，文件名為中文時候出現亂碼
unzip -O CP936 yn.zip
14.vpn客戶端
https://hadler.me/linux/forticlient-sslvpn-deb-packages/
https://hadler.me/linux/openfortigui/
15.mariadb
http://www.centoscn.com/mysql/2014/0919/3778.html

[mysqld]
default-storage-engine = innodb
innodb_file_per_table
max_connections = 2048
collation-server = utf8_general_ci
character-set-server = utf8
lower_case_table_names=1

update user set password=password(‘root‘)
flush privileges;

15： Ubuntu vi 上下左右變ABCD問題解決方法

錯誤問題：vi上下左右鍵顯示為ABCD的問題

解決方法：

只要依次執行以下兩個命令即可完美解決Ubuntu下vi編輯器方向鍵變字母的問題。

　　一.執行命令 sudo apt-get remove vim-common

　　二.執行命令 sudo apt-get install vim

16.git客戶端配置用戶名密碼
在~目錄下創建文件:.netrc
內容為:
machine git.gongsibao.net
login [email protected]
password ******

.netrc的權限只能為600
chmod 600 .netrc

日常LINUX操作