prefix的意思是按下某个组合键，tmux默认是Ctrl+b,更改为下面的配置为Ctrl+a
prefix d的意思是先按下prefix组合键，手指都抬起来，然后按下d
prefix d deattach当前session，这样会回到tmux外的状态(可以tmux a attach回来)
prefix c 新建一个window
prefix 数字 跳转到某个window,下方状态栏会有当前window的标号，名字，是否选中
prefix p 跳转到前一个window
prefix n 跳转到下一个window
prefix , 重命名当前的window,这个在你选择window的时候会有帮助
prefix s 切屏，左右两块pane
prefix v 切屏，上下两块pane
prefix x 关闭当前pane(或者Ctrl+d)
prefix h | j | k | l 类似vim上下左右切换pane
prefix < 如果有左右屏的话，在又屏按下这个组合键，则右屏面积变大，左屏变小
prefix + 如果有上下屏的话，在又屏按下这个组合键，屏下屏面积变大，上屏变小
同理可以对应prefix > prefix -
>向右变大 | <向左变大 |+向上变大 | -向下变大
prefix ? 查看快捷键
修改 ~/.tmux.conf如果发现配置没有生效，说明还有tmux进程开着
ps aux | grep tmux
将tmux有关进程kill后重启tmux就可以了
~/.tmux.conf
unbind C-b
set -g prefix C-a
setw -g mode-keys vi
# split window like vim
# vim's defination of a horizontal/vertical split is revised from tumx's
bind s split-window -h
bind v split-window -v
# move arount panes wiht hjkl, as one would in vim after C-w
bind h select-pane -L
bind j select-pane -D
bind k select-pane -U
bind l select-pane -R
# resize panes like vim
# feel free to change the "1" to however many lines you want to resize by,
# only one at a time can be slow
bind < resize-pane -L 10
bind > resize-pane -R 10
bind - resize-pane -D 10
bind + resize-pane -U 10
# bind : to command-prompt like vim
# this is the default in tmux already
bind : command-prompt
syntax on
set nu
hi Comment ctermfg=DarkCyan
set backspace=2
set selection=exclusive
set selectmode=mouse,key
filetype on
filetype plugin on
filetype indent on
set fileencodings=utf-8,gbk
set encoding=euc-cn
set ambiwidth=double
set hlsearch
set incsearch
set cindent
set tabstop=4
set shiftwidth=4
set autoindent
set showmatch
set matchtime=1
set wildmenu
setlocal noswapfile
set bufhidden=hide
centos 安装文件
用yum安装
yum install zip
yum install unzip
iptables 防火墙启动80端口
以下仅仅是记录，需要参考/etc/sysconfig/iptables修改
编辑vi /etc/sysconfig/iptables文件，如：
-A RH-Firewall-1-INPUT -m state –state NEW -m tcp -p tcp –dport 22 -j ACCEPT
-A RH-Firewall-1-INPUT -m state –state NEW -m tcp -p tcp –dport 80 -j ACCEPT
-A RH-Firewall-1-INPUT -m state –state NEW -m tcp -p tcp –dport 8080 -j ACCEPT
重启iptalbes服务：
/etc/init.d/iptables restart
java安装
###下载
首先下载最新的jdk 6 目前是45版本，下载地址不太好找，在oracle官网的download-->java se -->Previous Releases找到下载地址，现在oracle下载必须注册了。 http://www.oracle.com/technetwork/java/javase/downloads/index.html?ssSourceSiteId=ocomen
use mysql;
UPDATE user SET Password=PASSWORD('...') WHERE User='root';
FLUSH PRIVILEGES;
###/etc/my.cnf
# Example MySQL config file for very large systems.
#
# This is for a large system with memory of 1G-2G where the system runs mainly
# MySQL.
#
# MySQL programs look for option files in a set of
# locations which depend on the deployment platform.
# You can copy this option file to one of those
# locations. For information about these locations, see:
# http://dev.mysql.com/doc/mysql/en/option-files.html
#
# In this file, you can use all long options that a program supports.
# If you want to know which options a program supports, run the program
# with the "--help" option.
# The following options will be passed to all MySQL clients
[client]
#password = your_password
port = 3306
socket = /mydb/mysql/mysql.sock
default-character-set=utf8
#socket = /var/lib/mysql/mysql.sock
# Here follows entries for some specific programs
# The MySQL server
[mysqld]
port = 3306
datadir=/mydb/mysql
socket = /mydb/mysql/mysql.sock
collation-server = utf8_unicode_ci
init-connect='SET NAMES utf8'
character-set-server=utf8
#socket = /var/lib/mysql/mysql.sock
skip-external-locking
key_buffer_size = 384M
max_allowed_packet = 1M
table_open_cache = 512
sort_buffer_size = 2M
read_buffer_size = 2M
read_rnd_buffer_size = 8M
myisam_sort_buffer_size = 64M
thread_cache_size = 8
query_cache_size = 32M
# Try number of CPU's*2 for thread_concurrency
thread_concurrency = 8
# Don't listen on a TCP/IP port at all. This can be a security enhancement,
# if all processes that need to connect to mysqld run on the same host.
# All interaction with mysqld must be made via Unix sockets or named pipes.
# Note that using this option without enabling named pipes on Windows
# (via the "enable-named-pipe" option) will render mysqld useless!
#
#skip-networking
# Replication Master Server (default)
# binary logging is required for replication
log-bin=mysql-bin
# required unique id between 1 and 2^32 - 1
# defaults to 1 if master-host is not set
# but will not function as a master if omitted
server-id = 1
# Replication Slave (comment out master section to use this)
#
# To configure this host as a replication slave, you can choose between
# two methods :
#
# 1) Use the CHANGE MASTER TO command (fully described in our manual) -
# the syntax is:
#
# CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,
# MASTER_USER=<user>, MASTER_PASSWORD=<password> ;
#
# where you replace <host>, <user>, <password> by quoted strings and
# <port> by the master's port number (3306 by default).
#
# Example:
#
# CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,
# MASTER_USER='joe', MASTER_PASSWORD='secret';
#
# OR
#
# 2) Set the variables below. However, in case you choose this method, then
# start replication for the first time (even unsuccessfully, for example
# if you mistyped the password in master-password and the slave fails to
# connect), the slave will create a master.info file, and any later
# change in this file to the variables' values below will be ignored and
# overridden by the content of the master.info file, unless you shutdown
# the slave server, delete master.info and restart the slaver server.
# For that reason, you may want to leave the lines below untouched
# (commented) and instead use CHANGE MASTER TO (see above)
#
# required unique id between 2 and 2^32 - 1
# (and different from the master)
# defaults to 2 if master-host is set
# but will not function as a slave if omitted
#server-id = 2
#
# The replication master for this slave - required
#master-host = <hostname>
#
# The username the slave will use for authentication when connecting
# to the master - required
#master-user = <username>
#
# The password the slave will authenticate with when connecting to
# the master - required
#master-password = <password>
#
# The port the master is listening on.
# optional - defaults to 3306
#master-port = <port>
#
# binary logging - not required for slaves, but recommended
#log-bin=mysql-bin
#
# binary logging format - mixed recommended
#binlog_format=mixed
# Uncomment the following if you are using InnoDB tables
#innodb_data_home_dir = /var/lib/mysql
#innodb_data_file_path = ibdata1:2000M;ibdata2:10M:autoextend
#innodb_log_group_home_dir = /var/lib/mysql
# You can set .._buffer_pool_size up to 50 - 80 %
# of RAM but beware of setting memory usage too high
#innodb_buffer_pool_size = 384M
#innodb_additional_mem_pool_size = 20M
# Set .._log_file_size to 25 % of buffer pool size
#innodb_log_file_size = 100M
#innodb_log_buffer_size = 8M
#innodb_flush_log_at_trx_commit = 1
#innodb_lock_wait_timeout = 50
[mysqldump]
quick
max_allowed_packet = 16M
[mysql]
no-auto-rehash
default-character-set=utf8
# Remove the next comment character if you are not familiar with SQL
#safe-updates
[myisamchk]
key_buffer_size = 256M
sort_buffer_size = 256M
read_buffer = 2M
write_buffer = 2M
[mysqlhotcopy]
interactive-timeout
mysql -u root -p
mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('newpass');
CREATE USER 'username'@'%' IDENTIFIED BY '123456';
GRANT ALL ON databasename.tablename TO 'username'@'host';
flush privileges;
GRANT ALL ON databasename.* TO 'saas'@'%';
用户相关
添加用户
useradd duoduo
添加用户组
groupadd duoduo
显示各个组
groups
添加root权限
sudo vim /etc/sudoers
在root ALL=(ALL:ALL) ALL下添加
duoduo ALL=(ALL:ALL) ALL
wiki jsmith❌1001:1000:Joe Smith,Room 1007,(234)555-8910,(234)555-0044,email:/home/jsmith:/bin/sh
User name: the string a user would type in when logging into the operating system: the logname. Must be unique across users listed in the file.
Information used to validate a user's password; in most modern uses, this field is usually set to "x" (or "", or some other indicator) with the actual password information being stored in a separate shadow password file. On Linux systems, setting this field to an asterisk ("") is a common way to disable direct logins to an account while still preserving its name, while another possible value is "NP" which indicates to use an NIS server to obtain the password.[2] Without password shadowing in effect, this field would typically contain a cryptographic hash of the user's password (in combination with a salt).
user identifier number, used by the operating system for internal purposes. It need not be unique.
group identifier number, which identifies the primary group of the user; all files that are created by this user may initially be accessible to this group.
Gecos field, commentary that describes the person or account. Typically, this is a set of comma-separated values including the user's full name and contact details.
Path to the user's home directory.
Program that is started every time the user logs into the system. For an interactive user, this is usually one of the system's command line interpreters (shells).