MyGoogle
google.com__
https://www.google.com/search?q=%s

curl www.google.com

-o 将文件保存到 -o 指定的文件名
-O 将文件保存到默认文件名

curl -o google.html www.google.com

curl -L google.com

curl -sSL http://to.sh | bash

curl -i google.com

curl -X POST --data 'keyword=value' https://httpbin.org/post

curl -X DELETE url

curl -X PUT --data 'key=value' url

curl -T file.txt url

curl -E mycert.pem https://url

curl -H ‘Content-Type:application/json' -H 'Authorization: bearer valid_token' URL

curl -b cook_file.txt -c response_cookie.txt URL

curl -u ftpuser:ftppassword -T file.txt ftp://ftp.server
curl -u ftpuser:ftppassword -T "{file1, file2}" ftp://ftp.server

wget https://www.google.com

axel -n 10 url

mwget -n 5 url

https://trello.com/add-card

alias vi='vim'

sudo find -name <filename> path_to_search

less path_to_file

nemo .

tree

tail -f filename

ls ~ | grep word

rm morning*.jpg

tree . > file.txt

./long_time_task.sh &

# List of plugins
set -g @plugin 'tmux-plugins/tpm'
set -g @plugin 'tmux-plugins/tmux-sensible'

# Other examples:
# set -g @plugin 'github_username/plugin_name'
# set -g @plugin 'git@github.com/user/plugin'
# set -g @plugin 'git@bitbucket.com/user/plugin'

# Initialize TMUX plugin manager (keep this line at the very bottom of tmux.conf)
run '~/.tmux/plugins/tpm/tpm'

set -g @plugin '...'

set -g @plugin 'tmux-plugins/tmux-yank'

sudo apt-get install xsel # or xclip

set -g @plugin 'tmux-plugins/tmux-resurrect'

prefix + Ctrl-s      save
prefix + Ctrl-r      restore

set -g @plugin 'tmux-plugins/tmux-resurrect'
set -g @plugin 'tmux-plugins/tmux-continuum'

set -g @continuum-restore 'on'

# Define the root logger with appender X
log4j.rootLogger = DEBUG, X

# Set the appender named X to be a File appender
log4j.appender.X=org.apache.log4j.FileAppender
log4j.appender.X.File=${log}/log.out

# Define the layout for X appender
log4j.appender.X.layout=org.apache.log4j.PatternLayout
log4j.appender.X.layout.conversionPattern=%d{yyyy-MM-dd HH:mm:ss} %p [%t] %C{1}.%M(%F:%L) - %m%n

<!-- sl4j -->
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-api</artifactId>
    <version>1.7.21</version>
</dependency>
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
    <version>1.7.21</version>
</dependency>
<!-- log4j -->
<dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.17</version>
</dependency>

#config root logger
log4j.rootLogger = INFO,system.out
log4j.appender.system.out=org.apache.log4j.ConsoleAppender
log4j.appender.system.out.layout=org.apache.log4j.PatternLayout
log4j.appender.system.out.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %p [%t] %C{1}.%M(%F:%L) - %m%n

#config this Project.file logger
log4j.logger.APPENDER_NAME.file=INFO,APPENDER_NAME.file.out
log4j.appender.APPENDER_NAME.file.out=org.apache.log4j.DailyRollingFileAppender
log4j.appender.APPENDER_NAME.file.out.File=logContentFile.log
log4j.appender.APPENDER_NAME.file.out.layout=org.apache.log4j.PatternLayout

private static final Logger logger = LoggerFactory.getLogger(Server.class);
logger.info("now {}" , "starting server");

DEBUG < INFO < WARN < ERROR < FATAL

# level : 是日志记录的优先级，分为 OFF、FATAL、ERROR、WARN、INFO、DEBUG、ALL 或者您定义的级别。Log4j 建议只使用四个级别，优先级从高到低分别是 ERROR、WARN、INFO、DEBUG。通过在这里定义的级别，您可以控制到应用程序中相应级别的日志信息的开关。比如在这里定义了 INFO 级别，则应用程序中所有 DEBUG 级别的日志信息将不被打印出来。

log4j.appender.appenderName = fully.qualified.name.of.appender.class
log4j.appender.appenderName.option1 = value1
log4j.appender.appenderName.optionN = valueN

log4j.appender.stdout=org.apache.log4j.ConsoleAppender

log4j.appender.appenderName = fully.qualified.name.of.appender.class

log4j.appender.appenderName.option = valueN

log4j.appender.APPENDER_NAME.file.out.File=d:\\log.txt

log4j.appender.APPENDER_NAME.file.out.File=${catalina.home}/logs/logs_tomcat.log

%m 输出代码中指定的消息
%p 输出优先级，即 DEBUG，INFO，WARN，ERROR，FATAL
%r 输出自应用启动到输出该 log 信息耗费的毫秒数
%c 输出所属的类目，通常就是所在类的全名
%t 输出产生该日志事件的线程名
%n 输出一个回车换行符，Windows 平台为“\r\n”，Unix 平台为“\n”
%d 输出日志时间点的日期或时间，默认格式为 ISO8601，也可以在其后指定格式，比如： %d{yyyy MMM dd HH:mm:ss,SSS} ，输出类似： 2002 年 10 月 18 日 22 ： 10 ： 28 ， 921
%l 输出日志事件的发生位置，包括类目名、发生的线程，以及在代码中的行数。

log4j.appender.APPENDER_NAME.file.out.layout.ConversionPattern=%d{yyyy MMM dd HH:mm:ss,SSS}%5p{ \%F\:\%L }-%m%n

log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%-4r %-5p %d{yyyy-MM-dd HH:mm:ssS} %c %m%n

%p: 输出日志信息优先级，即 DEBUG，INFO，WARN，ERROR，FATAL,
%d: 输出日志时间点的日期或时间，默认格式为 ISO8601，也可以在其后指定格式，比如：%d{yyy MMM dd HH:mm:ss,SSS}，输出类似：2002 年 10 月 18 日 22：10：28，921
%r: 输出自应用启动到输出该 log 信息耗费的毫秒数
%c: 输出日志信息所属的类目，通常就是所在类的全名
%t: 输出产生该日志事件的线程名
%l: 输出日志事件的发生位置，相当于 %C.%M(%F:%L) 的组合，包括类目名、发生的线程，以及在代码中的行数。举例：Testlog4.main(TestLog4.java:10)
%x: 输出和当前线程相关联的 NDC（嵌套诊断环境）, 尤其用到像 java servlets 这样的多客户多线程的应用中。
%%: 输出一个"%"字符
%F: 输出日志消息产生时所在的文件名称
%L: 输出代码中的行号
%m: 输出代码中指定的消息，产生的日志具体信息
%n: 输出一个回车换行符，Windows 平台为"\r\n"，Unix 平台为"\n"输出日志信息换行

0　　INFO　2003-06-13 13:23:46968 ClientWithLog4j Client socket: Socket[addr=localhost/127.0.0.1,port=8002,localport=2014]
 DEBUG 2003-06-13 13:23:46984 ClientWithLog4j Server says: 'Java server with log4j, Fri Jun 13 13:23:46 CST 2003'
16　 DEBUG 2003-06-13 13:23:46984 ClientWithLog4j GOOD
16　 DEBUG 2003-06-13 13:23:46984 ClientWithLog4j Server responds: 'Command 'HELLO' not understood.'
16　 DEBUG 2003-06-13 13:23:46984 ClientWithLog4j HELP
16　 DEBUG 2003-06-13 13:23:46984 ClientWithLog4j Server responds: 'Vocabulary: HELP QUIT'
16　 DEBUG 2003-06-13 13:23:46984 ClientWithLog4j QUIT

log4j.rootLogger=DEBUG,CONSOLE,FILE,ROLLING_FILE,SOCKET,LF5_APPENDER,MAIL,DATABASE,A1,im
log4j.addivity.org.apache=true

# 应用于控制台
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.Threshold=DEBUG
log4j.appender.CONSOLE.Target=System.out
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n
#log4j.appender.CONSOLE.layout.ConversionPattern=[start]%d{DATE}[DATE]%n%p[PRIORITY]%n%x[NDC]%n%t[thread] n%c[CATEGORY]%n%m[MESSAGE]%n%n

#应用于文件
log4j.appender.FILE=org.apache.log4j.FileAppender
log4j.appender.FILE.File=file.log
log4j.appender.FILE.Append=false
log4j.appender.FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.FILE.layout.ConversionPattern=[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n
# Use this layout for LogFactor 5 analysis

# 应用于文件回滚
log4j.appender.ROLLING_FILE=org.apache.log4j.RollingFileAppender
log4j.appender.ROLLING_FILE.Threshold=ERROR
log4j.appender.ROLLING_FILE.File=rolling.log // 文件位置，也可以用变量 ${java.home}、rolling.log
log4j.appender.ROLLING_FILE.Append=true //true: 添加 false: 覆盖
log4j.appender.ROLLING_FILE.MaxFileSize=10KB // 文件最大尺寸
log4j.appender.ROLLING_FILE.MaxBackupIndex=1 // 备份数
log4j.appender.ROLLING_FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.ROLLING_FILE.layout.ConversionPattern=[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n

#应用于 socket
log4j.appender.SOCKET=org.apache.log4j.RollingFileAppender
log4j.appender.SOCKET.RemoteHost=localhost
log4j.appender.SOCKET.Port=5001
log4j.appender.SOCKET.LocationInfo=true
# Set up for Log Facter 5
log4j.appender.SOCKET.layout=org.apache.log4j.PatternLayout
log4j.appender.SOCET.layout.ConversionPattern=[start]%d{DATE}[DATE]%n%p[PRIORITY]%n%x[NDC]%n%t[thread]%n%c[CATEGORY]%n%m[MESSAGE]%n%n

# Log Factor 5 Appender
log4j.appender.LF5_APPENDER=org.apache.log4j.lf5.LF5Appender
log4j.appender.LF5_APPENDER.MaxNumberOfRecords=2000

# 发送日志给邮件
log4j.appender.MAIL=org.apache.log4j.net.SMTPAppender
log4j.appender.MAIL.Threshold=FATAL
log4j.appender.MAIL.BufferSize=10
log4j.appender.MAIL.From=web@gmail.com
log4j.appender.MAIL.SMTPHost=www.gmail.com
log4j.appender.MAIL.Subject=Log4J Message
log4j.appender.MAIL.To=web@gmail.com
log4j.appender.MAIL.layout=org.apache.log4j.PatternLayout
log4j.appender.MAIL.layout.ConversionPattern=[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n
# 用于数据库
log4j.appender.DATABASE=org.apache.log4j.jdbc.JDBCAppender
log4j.appender.DATABASE.URL=jdbc:mysql://localhost:3306/test
log4j.appender.DATABASE.driver=com.mysql.jdbc.Driver
log4j.appender.DATABASE.user=root
log4j.appender.DATABASE.password=
log4j.appender.DATABASE.sql=INSERT INTO LOG4J (Message) VALUES ('[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n')
log4j.appender.DATABASE.layout=org.apache.log4j.PatternLayout
log4j.appender.DATABASE.layout.ConversionPattern=[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n

log4j.appender.A1=org.apache.log4j.DailyRollingFileAppender
log4j.appender.A1.File=SampleMessages.log4j
log4j.appender.A1.DatePattern=yyyyMMdd-HH'.log4j'
log4j.appender.A1.layout=org.apache.log4j.xml.XMLLayout

#自定义 Appender
log4j.appender.im = net.cybercorlin.util.logger.appender.IMAppender
log4j.appender.im.host = mail.cybercorlin.net
log4j.appender.im.username = username
log4j.appender.im.password = password
log4j.appender.im.recipient = corlin@cybercorlin.net
log4j.appender.im.layout=org.apache.log4j.PatternLayout
log4j.appender.im.layout.ConversionPattern =[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">

    <!-- ========================== 自定义输出格式说明 ================================ -->
    <!-- %p 输出优先级，即 DEBUG，INFO，WARN，ERROR，FATAL -->
    <!-- #%r 输出自应用启动到输出该 log 信息耗费的毫秒数  -->
    <!-- #%c 输出所属的类目，通常就是所在类的全名 -->
    <!-- #%t 输出产生该日志事件的线程名 -->
    <!-- #%n 输出一个回车换行符，Windows 平台为“\r\n”，Unix 平台为“\n” -->
    <!-- #%d 输出日志时间点的日期或时间，默认格式为 ISO8601，也可以在其后指定格式，比如：%d{yyy MMM dd HH:mm:ss,SSS}，输出类似：2002 年 10 月 18 日 22：10：28，921  -->
    <!-- #%l 输出日志事件的发生位置，包括类目名、发生的线程，以及在代码中的行数。举例：Testlog4.main(TestLog4.java:10)  -->
    <!-- ========================================================================== -->

    <!-- ========================== 输出方式说明 ================================ -->
    <!-- Log4j 提供的 appender 有以下几种：-->
    <!-- org.apache.log4j.ConsoleAppender（控制台）,  -->
    <!-- org.apache.log4j.FileAppender（文件）,  -->
    <!-- org.apache.log4j.DailyRollingFileAppender（每天产生一个日志文件）, -->
    <!-- org.apache.log4j.RollingFileAppender（文件大小到达指定尺寸的时候产生一个新的文件）,  -->
    <!-- org.apache.log4j.WriterAppender（将日志信息以流格式发送到任意指定的地方）   -->
    <!-- ========================================================================== -->
    <!-- 输出到日志文件  -->
    <appender name="filelog_appender"
        class="org.apache.log4j.RollingFileAppender">
        <!-- 设置 File 参数：日志输出文件名 -->
        <param name="File" value="log/testlog4jxml_all.log" />
        <!-- 设置是否在重新启动服务时，在原有日志的基础添加新日志 -->
        <param name="Append" value="true" />
        <!-- 设置文件大小 -->
        <param name="MaxFileSize" value="1MB" />
        <!-- 设置文件备份 -->
        <param name="MaxBackupIndex" value="10000" />
        <!-- 设置输出文件项目和格式 -->
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss} %-5p (%c:%L)- %m%n" />
        </layout>
    </appender>

    <!-- 输出到日志文件 每天一个日志  -->
    <appender name="filelog_daily" class="org.apache.log4j.DailyRollingFileAppender">
        <param name="File" value="log/daily.log" />
        <param name="DatePattern" value="'daily.'yyyy-MM-dd'.log'" />
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="[%d{yyyy-MM-dd HH:mm:ss\} %-5p] [%t] (%c:%L) - %m%n" />
        </layout>
    </appender>

    <!-- 输出到控制台中 -->
    <appender name="console" class="org.apache.log4j.ConsoleAppender">
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern"
                value="%d{yyyy-MM-dd HH:mm:ss} %-5p: %m%n" />
            <!-- "%-5p: [%t] [%c{3}.%M(%L)] | %m%n" -->
        </layout>
    </appender>

    <appender name="EMAIL_QQ" class="org.apache.log4j.net.SMTPAppender">
        <param name="Threshold" value="INFO"/>
        <param name="BufferSize" value="128" />
        <param name="SMTPHost" value="smtp.qq.com" />
        <param name="SMTPUsername" value="" />
        <param name="SMTPPassword" value="" />
        <param name="From" value="" />
        <param name="To" value="" />
        <param name="Subject" value="测试邮件发送" />
        <param name="LocationInfo" value="true" />
        <param name="SMTPDebug" value="true" />
        <layout class="org.cjj.log4j.extend.PatternLayout_zh">
            <param name="ConversionPattern" value="[%d{ISO8601}] %-5p %c %m%n"/>
        </layout>
    </appender>

<!--- 异步测试，当日志达到缓存区大小时候执行所包的 appender -->
    <appender name="ASYNC_test" class="org.apache.log4j.AsyncAppender">
     <param name="BufferSize" value="10"/>
     <appender-ref ref="EMAIL_QQ"/>
   </appender>

 <!-- 设置包限制输出的通道 -->
    <category name="com.package.name" additivity="false"><!-- 日志输出级别，起码可以有 5 个级别，可以扩展自己的级别，邮件发送必须是 ERROR 级别不好用，所以最后自己扩展一个邮件发送级别 -->
        <level value="ERROR" />
        <appender-ref ref="filelog_daily" />
        <appender-ref ref="daily_appender" />
        <appender-ref ref="console" />
        <appender-ref ref="ASYNC_test" />
    </category>
</log4j:configuration>

log4j:ERROR setFile(null,true) call failed.
java.io.FileNotFoundException: /home/work/log/web.log (No such file or directory)
    at java.io.FileOutputStream.open0(Native Method)
    at java.io.FileOutputStream.open(FileOutputStream.java:270)
    at java.io.FileOutputStream.<init>(FileOutputStream.java:213)
    at java.io.FileOutputStream.<init>(FileOutputStream.java:133)
    at org.apache.log4j.FileAppender.setFile(FileAppender.java:294)
    at org.apache.log4j.FileAppender.activateOptions(FileAppender.java:165)
    at org.apache.log4j.DailyRollingFileAppender.activateOptions(DailyRollingFileAppender.java:223)
    at org.apache.log4j.config.PropertySetter.activate(PropertySetter.java:307)
    at org.apache.log4j.xml.DOMConfigurator.parseAppender(DOMConfigurator.java:295)
    at org.apache.log4j.xml.DOMConfigurator.findAppenderByName(DOMConfigurator.java:176)
    at org.apache.log4j.xml.DOMConfigurator.findAppenderByReference(DOMConfigurator.java:191)
    at org.apache.log4j.xml.DOMConfigurator.parseChildrenOfLoggerElement(DOMConfigurator.java:523)
    at org.apache.log4j.xml.DOMConfigurator.parseCategory(DOMConfigurator.java:436)
    at org.apache.log4j.xml.DOMConfigurator.parse(DOMConfigurator.java:1004)
    at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:872)
    at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:778)
    at org.apache.log4j.helpers.OptionConverter.selectAndConfigure(OptionConverter.java:526)
    at org.apache.log4j.LogManager.<clinit>(LogManager.java:127)
    at org.apache.log4j.Logger.getLogger(Logger.java:104)
    at org.apache.commons.logging.impl.Log4JLogger.getLogger(Log4JLogger.java:262)
    at org.apache.commons.logging.impl.Log4JLogger.<init>(Log4JLogger.java:108)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    at org.apache.commons.logging.impl.LogFactoryImpl.createLogFromClass(LogFactoryImpl.java:1025)
    at org.apache.commons.logging.impl.LogFactoryImpl.discoverLogImplementation(LogFactoryImpl.java:844)
    at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:541)
    at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:292)
    at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:269)
    at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:655)
    at org.springframework.util.PropertyPlaceholderHelper.<clinit>(PropertyPlaceholderHelper.java:40)
    at org.springframework.web.util.ServletContextPropertyUtils.<clinit>(ServletContextPropertyUtils.java:38)
    at org.springframework.web.util.Log4jWebConfigurer.initLogging(Log4jWebConfigurer.java:128)
    at org.springframework.web.util.Log4jConfigListener.contextInitialized(Log4jConfigListener.java:49)
    at org.eclipse.jetty.server.handler.ContextHandler.callContextInitialized(ContextHandler.java:890)
    at org.eclipse.jetty.servlet.ServletContextHandler.callContextInitialized(ServletContextHandler.java:532)
    at org.eclipse.jetty.server.handler.ContextHandler.startContext(ContextHandler.java:853)
    at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:344)
    at org.eclipse.jetty.webapp.WebAppContext.startWebapp(WebAppContext.java:1514)
    at org.eclipse.jetty.maven.plugin.JettyWebAppContext.startWebapp(JettyWebAppContext.java:359)
    at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1476)
    at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:785)
    at org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:261)
    at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:545)
    at org.eclipse.jetty.maven.plugin.JettyWebAppContext.doStart(JettyWebAppContext.java:434)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
    at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:131)
    at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:113)
    at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:113)
    at org.eclipse.jetty.server.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:167)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
    at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:131)
    at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:113)
    at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:113)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
    at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:131)
    at org.eclipse.jetty.server.Server.start(Server.java:449)
    at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:105)
    at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:113)
    at org.eclipse.jetty.server.Server.doStart(Server.java:416)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
    at org.eclipse.jetty.maven.plugin.AbstractJettyMojo.startJetty(AbstractJettyMojo.java:467)
    at org.eclipse.jetty.maven.plugin.AbstractJettyMojo.execute(AbstractJettyMojo.java:333)
    at org.eclipse.jetty.maven.plugin.JettyRunMojo.execute(JettyRunMojo.java:180)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
    at org.codehaus.classworlds.Launcher.main(Launcher.java:47)
log4j:ERROR Either File or DatePattern options are not set for appender [file].

git add .
git commit -s
git push

工作区  ->  git add .  -> 暂存区 -> git commit -> 本地仓库 -> git push -> 远程仓库

工作区          暂存区           本地仓库                    远程仓库
    \          /     \          /         \                  /
     \        /       \        /           \                /
     git diff         git diff --cache     git diff origin/master master

git reset <file>

git reset HEAD <file>

git reset --hard

git reset --hard origin/master

git reset --soft HEAD~1

<select id="selectUser" parameterType="int" resultType="hashmap">
    SELECT * FROM USER WHERE ID = #{id}
</select>

<insert id="insertUser">
    insert into USER (id, username, password, email, address)
    values (#{id},#{username},#{password},#{email},#{address})
</insert>

<insert id="insertUser" parameterType="User">
    insert into USER (id, username, password, email, address)
    values (#{id},#{username},#{password},#{email},#{address})
</insert>

<dependency>
  <groupId>org.mybatis</groupId>
  <artifactId>mybatis</artifactId>
  <version>x.x.x</version>
</dependency>

<dependency>
  <groupId>org.mybatis</groupId>
  <artifactId>mybatis-spring</artifactId>
  <version>x.x.x</version>
</dependency>

<project ...>
   ...
   <build>
     ...
     <plugins>
      ...
      <plugin>
        <groupId>org.mybatis.generator</groupId>
        <artifactId>mybatis-generator-maven-plugin</artifactId>
        <version>1.3.7</version>
      </plugin>
      ...
    </plugins>
    ...
  </build>
  ...
</project>

obj = Series([4, 7, -5, 3])
obj2 = Series([4, 7, -5, 3], index=['d', 'b', 'a', 'c'])
sdata = {'Ohio': 35000, 'Texas': 71000, 'Oregon': 16000, 'Utah': 5000}

data = {'state': ['Ohio', 'Ohio', 'Ohio', 'Nevada', 'Nevada'],
        'year': [2000, 2001, 2002, 2001, 2002],
        'pop': [1.5, 1.7, 3.6, 2.4, 2.9]}
frame = DataFrame(data)

pandas.read_csv('path.csv')

data.to_csv('filepath.csv')

pandas.read_csv('path.csv', nrows=500)

pandas.read_table()

pandas.read_fwf()

pandas.read_excel()

pandas.read_json()

pandas.read_html()

pandas.read_sql_table()
pandas.read_sql_query()
pandas.read_sql()

pip install nltk

>> import nltk
>> nltk.download()

from nltk.stem import WordNetLemmatizer
lemmatizer = WordNetLemmatizer()
lemmatizer.lemmatize(word)