sudo apt-get install netmon-applet sensors-applet
sudo chmod +s /usr/bin/cupfreq-selector

xrandr --output VGA --auto // 找开第二个显示器
xrandr --output VGA --off // 关闭第二个显示器
xrandr --output VGA --right-of LVDS --auto // 扩展第二个显示到右边

 Section "Screen"
         Identifier      "Default Screen"
         Monitor         "Configured Monitor"
         Device          "Configured Video Device"
         # 以下为需要增加的部分配置
         Monitor         "default"
         Defaultdepth    24
         SubSection      "Display"
                 Depth   24
                 Virtual 2048 768
                 Modes   "1024x768@60"
         EndSubSection
 EndSection

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" multi-encoding setting
if has("multi_byte")
"set bomb
set fileencodings=ucs-bom,utf-8,cp936,big5,euc-jp,euc-kr,latin1
" CJK environment detection and corresponding setting
if v:lang =~ "^zh_CN"
" Use cp936 to support GBK, euc-cn == gb2312
set encoding=cp936
set termencoding=cp936
set fileencoding=cp936
elseif v:lang =~ "^zh_TW"
" cp950, big5 or euc-tw
" Are they equal to each other?
set encoding=big5
set termencoding=big5
set fileencoding=big5
elseif v:lang =~ "^ko"
" Copied from someone's dotfile, untested
set encoding=euc-kr
set termencoding=euc-kr
set fileencoding=euc-kr
elseif v:lang =~ "^ja_JP"
" Copied from someone's dotfile, untested
set encoding=euc-jp
set termencoding=euc-jp
set fileencoding=euc-jp
endif
" Detect UTF-8 locale, and replace CJK setting if needed
if v:lang =~ "utf8$" || v:lang =~ "UTF-8$"
set encoding=utf-8
set termencoding=utf-8
set fileencoding=utf-8
endif
else
echoerr "Sorry, this version of (g)vim was not compiled with multi_byte"
endif

set syntax=on
syntax on
set number

:map <F2> :!~/bin/xmms_sitman.sh F2<CR>
:map <F3> :!~/bin/xmms_sitman.sh F3<CR>
:map <F4> :!~/bin/xmms_sitman.sh F4<CR>
:map <F5> :!~/bin/xmms_sitman.sh F5<CR>
:map <F6> :!~/bin/xmms_sitman.sh F6<CR>
:map <F7> :!~/bin/xmms_sitman.sh F7<CR>
:command Now :read !echo `date +'\%Y\%m\%d \%H:\%M:\%S'` <CR>
:map <F12> :Now<CR>kJ$

""""""""""""""""""""""""""""""
" netrw setting
""""""""""""""""""""""""""""""
let g:netrw_browse_split=2
let g:netrw_winsize=30

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public interface User {
    public String getName();
    public Date getRegisterDate();
    public Customer getCustomer();
}
public interface Customer {
    public String getId();
    public String getName();
    public boolean isVip();
}
public interface EntCustomer extends Customer {
    public String getTrustId(); // 组织机构代码证号
}

jack.getName();
jack.getCustomer().getName();
jack.getCustomer().isVip();
((EntCustomer)jack.getCustomer()).getTrustId();

jack.name
jack.customer.name
jack.vip
jack.customer.trustId

name

name

user ---> User(name:"jack", ...)
request ---> HttpServletRequest(header: ...)

#user.name // 取用户的姓名
#user.age // 取用户年龄
#user.birthday // 取用户生日
#user.customer.name // 取用户所属客户的名称
#request.parameters // 取请求参数

name // 取用户的姓名
age // 取用户年龄
birthday // 取用户生日
customer.name // 取用户所属客户的名称
#request.parameters // 取请求参数

|
                     |--request
                     |
                     |--application
                     |
       context map---|--OgnlValueStack(root) [ user, action, OgnlUtil, ... ]
                     |
                     |--session
                     |
                     |--attr
                     |
                     |--parameters

name // 取用户的姓名
age // 取用户年龄
birthday // 取用户生日
customer.name // 取用户所属客户的名称
#request.parameters // 取请求参数

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#!/bin/bash
#
### BEGIN INIT INFO
# Provides:          atlassian
# Required-Start:    
# Required-Stop:     
# Should-Start:      $mysql
# Should-Stop:       $mysql
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start and stop the Jira&Confluence server
# Description:       Start and stop the Jira&Confluence server.
### END INIT INFO
#

tomcat=/home/jxb/apps/atlassian-jira-enterprise-3.6.5-standalone
startup=$tomcat/bin/startup.sh
shutdown=$tomcat/bin/shutdown.sh
export JAVA_HOME=/usr/lib/jvm/java-6-sun

start(){
 echo -n $"Starting Jira&Confluence service: "
 #daemon -c
 $startup
 RETVAL=$?
 echo
}

stop(){
 echo $"Stopping Jira&Confluence service: " 
 $shutdown 
 RETVAL=$?
 echo
}

restart(){
  stop
  start
}

status(){
	numproc=`ps -ef | grep atlassian-jira | grep -v "grep atlassian-jira" | wc -l`
	if [ $numproc -gt 0 ]; then
		echo "Jira&Confluence is running..."
	else
		echo "Jira&Confluence is stopped..."
	fi
}


# See how we were called.
case "$1" in
start)
 start
 ;;
stop)
 stop
 ;;
status)
 status
 ;;
restart)
 restart
 ;;
*)
 echo $"Usage: $0 {start|stop|status|restart}"
 exit 1
esac

exit 0

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----> EncodingFilter, UserSessionFilter ---> MainServlet ---> Transaction ---> JSP

public class RequestContext {
	private static ThreadLocal context = new ThreadLocal() {
		 protected synchronized Object initialValue() {
			return new RequestContext();
		}
	};
	
	public static RequestContext get() {
		return (RequestContext) context.get();
	}
	
	public User getUser();
	public UserSession getSession();
	public String getIP();
	...
}

User user = RequestContext.get().getUser();
UserSession session = RequestContext.get().getIP();
String ip = RequestContext.get().getIP();
...

public class UserSessionFilter implements Filter {
	...
	public void doFilter(ServletRequest request, ServletResponse response,
            FilterChain chain) throws IOException, ServletException {
		...
		UserSession session = getSession();
		User user = getUserFromSession(session);
		RequestContext.get().clear();
		RequestContext.get().setSession(session);
		RequestContext.get().setUser(user);
		...
		chain.doFilter(request, response);
		...
	}
	...
}

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    format : function(format){
        var args = Array.prototype.slice.call(arguments, 1);
        return format.replace(/\{(\d+)\}/g, function(m, i){
            return args[i];
        });
    }

String.format("name is {0} and age is {1}", "John", 12) => name is John and age is 12

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update T1 inner join (select ID, TYPE, sum(AMOUNT)
as NEW_AMOUNT from T2 group by ID, TYPE) as T3
on T1.ID = T3.ID and T1.TYPE = T3.TYPE 
set T1.AMOUNT = T1.AMOUNT+T3.NEW_AMOUNT

update T1 set T1.AMOUNT = T1.AMONT+T3.NEW_AMOUNT
from T1 inner join (select ID, TYPE, sum(AMOUNT)
as NEW_AMOUNT from T2 group by ID, TYPE) as T3
on T1.ID = T3.ID and T1.TYPE = T3.TYPE 

update T1 set T1.AMOUNT = T1.AMOUNT+
(select sum(T2.AMOUNT) from T2 
group by T2.ID, T2.TYPE 
having T2.ID=T1.ID and T2.TYPE=T1.TYPE)

CREATE TABLE T1 (
ID varchar(255), 
TYPE varchar(255), 
AMOUNT decimal
);
CREATE TABLE T2 (
ID varchar(255), 
TYPE varchar(255), 
AMOUNT decimal
);

delete from T2;
delete from T1;

insert into T2(ID,TYPE,AMOUNT) 
values('0000000001', 'P', 10);
insert into T2(ID,TYPE,AMOUNT) 
values('0000000001', 'P', 20);
insert into T2(ID,TYPE,AMOUNT) 
values('0000000002', 'P', 30);

insert into T2(ID,TYPE,AMOUNT) 
values('0000000001', 'N', 10);
insert into T2(ID,TYPE,AMOUNT) 
values('0000000002', 'N', 20);
insert into T2(ID,TYPE,AMOUNT) 
values('0000000002', 'N', 30);

insert into T1 values('0000000001', 'P', 0);
insert into T1 values('0000000001', 'N', 0);
insert into T1 values('0000000002', 'P', 0);
insert into T1 values('0000000002', 'N', 0);

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find . -name "*.jsp"|xargs sed -i -e 's/charset=gb2312/charset=UTF-8/g'

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case "$f" in
	.java) echo "java"
	;;
	*.ftl) echo "ftl"
	;;
esac

echo build.xml | awk -F. '{print $NF}'

xml

basename build.xml .xml

build

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和           &      & amp;
单引号     '      & apos;
双引号     "      & quot;
大于号     >      & gt;
小于号     <      & lt;

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PLATS= aix ansi bsd generic linux macosx mingw posix solaris

PLATS= sco aix ansi bsd generic linux macosx mingw posix solaris

PLATS= aix ansi bsd generic linux macosx mingw posix solaris
...
none:
	@echo "Please choose a platform: $(PLATS)"

PLATS= sco aix ansi bsd generic linux macosx mingw posix solaris
...
none:
	@echo "Please choose a platform: $(PLATS)"
sco:
        $(MAKE) all CC="cc" CFLAGS="-O2" RANLIB=""

make sco
make sco test

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# m h  dom mon dow   command
30-59/2 22-23 * * * halt -p

# m h  dom mon dow   command
10 22 * * * xmms

# m h  dom mon dow   command
DISPLAY=:0.0
# 22：10启动xmms
10 22 * * * xmms
# 每小时的55和59分锁定屏幕
55,59 * * * * /usr/bin/xlock

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• 北京: 千橡集团暨校内网诚聘软件研发工程师
• 搜狐网站诚聘Java、PHP和C++工程师

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• 搜狐网站诚聘Java、PHP和C++工程师
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