LittleQ

# war
需要把这个包拷贝到tomcat服务器上，然后解压
# exploded
不需要拷贝解压，tomcat会直接读取我们项目的target里面的classes文件，做到调试可更新

sudo apt-get install aria2

aria2c -c -s10 -k1M -x16 --enable-rpc=false -o 'Gantz.O.2016.720p.WEB-DL.AAC2.0.H.264 [MultiSub(Eng,Ita,Por,Rum,Swe,Tur)]v2.mkv' --header "User-Agent: netdisk;5.3.4.5;PC;PC-Windows;5.1.2600;WindowsBaiduYunGuanJia" --header "Referer: http://pan.baidu.com/disk/home" --header "Cookie: BDUSS=FDVnRtbnVaclhoR2dMLWdScHY2TlNFN1h3b3Qyb0stcXgtcXpyS0gtSFpXT3RZSVFBQUFBJCQAAAAAAAAAAAEAAAA7KQQU0KHHv7Tz0KG08wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAANnLw1jZy8NYcD; pcsett=1489315049-753101e6547a834c2756fc96703e7839" "https://pcs.baidu.com/rest/2.0/pcs/file?method=download&app_id=250528&path=%2Fapps%2Fbypy%2FGantz.O.2016.720p.WEB-DL.AAC2.0.H.264%20%5BMultiSub(Eng%2CIta%2CPor%2CRum%2CSwe%2CTur)%5Dv2.mkv"

[#99b455 2.2GiB/2.2GiB(99%) CN:10 DL:148KiB ETA:1 *** Download Progress Summary as of Sat Mar 11 19:12:58 2017 *** 
================================================
[#99b455 2.2GiB/2.2GiB(99%) CN:10 DL:92KiB ETA:48s]
FILE: /home/anonymous/Gantz.O.2016.720p.WEB-DL.AAC2.0.H.264 [MultiSub(Eng,Ita,Por,Rum,Swe,Tur)]v2.mkv
------------------------------------------------

[#99b455 2.2GiB/2.2GiB(99%) CN:1 DL:19KiB ETA:13
03/11 19:13:57 [NOTICE] Download complete: /home/anonymous/Gantz.O.2016.720p.WEB-DL.AAC2.0.H.264 [MultiSub(Eng,Ita,Por,Rum,Swe,Tur)]v2.mkv

Download Results:
gid   |stat|avg speed  |path/URI
======+====+===========+=======================================================
99b455|OK  |   1.2MiB/s|/home/anonymous/Gantz.O.2016.720p.WEB-DL.AAC2.0.H.264 [MultiSub(Eng,Ita,Por,Rum,Swe,Tur)]v2.mkv

Status Legend:
(OK):download completed.

git checkout branch-A
git reset --hard <merge前的版本号>

git revert -m <用1或2指定需要保留的主线> <需要撤销的合并的sha版本号>

git revert <merge操作的版本号>

sudo git pull	// 读取的配置文件为/root/.ssh/id_rsa
git pull	// 读取的配置文件为~/.ssh/id_rsa

debug1: identity file /home/anonymous/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /home/anonymous/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/anonymous/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/anonymous/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/anonymous/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/anonymous/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/anonymous/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/anonymous/.ssh/id_ed25519-cert type -1

debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_rsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0

git checkout <branch_name> -- <paths>

Ubuntu的使命是使Linux对人更友好，更易于交互

gcc: error: /usr/lib/rpm/redhat/redhat-hardened-cc1: No such file or directory
 error: command 'gcc' failed with exit status 1

~/.local/share/applications

desktop-file-install xxx.desktop

dnf install gnome-tweak-tool

Alt + PrintScreen -- Saves a screenshot of the focused window to the Pictures Folder
Shift + PrintScreen -- Lets you select an area of the screen, and saves to the Pictures Folder
Ctrl + PrintScreen -- Takes a screenshot of your entire desktop and copies it to the clipboard.
Ctrl + Alt + PrintScreen -- copies a screenshot of the focused window to the clipboard.
Ctrl + Shift + PrintScreen -- Lets you select an area of the screen, and copies it to the clipboard.
Ctrl + Shift + Alt + R -- Records a Screencast) of your entire desktop and saves it to your Videos folder.

systemctl start sshd

update user set authentication_string=password('Root@123') where user='root' and host='localhost';
FLUSH PRIVILEGES;

ImportError: libmysqlclient.so.18: cannot open shared object file: No such file or directory

freetype: no  [The C/C++ header for freetype2 (ft2build.h)

          could not be found.  You may need to install the

          development package.]

     png: no  [pkg-config information for 'libpng' could not

          be found.]

   qhull: yes [pkg-config information for 'qhull' could not be

          found. Using local copy.]

sudo yum install freetype

sudo yum -y install freetype freetype-devel libpng-devel

set mapred.reduce.tasks=50;
insert into table xxx
select
  *
from
 xxx
distribute by rand();

var myTable = $('#dynamic-table').DataTable({
                "bDestroy": true,
                //"bProcessing": true,
                "bServerSide": true,
                "sAjaxSource": "xxxxx",
                "fnServerData": function (sSource, aoData, fnCallback) {
                    $.ajax({
                        'dataType': 'json',
                        'type': 'POST',
                        'url': sSource,
                        'data': aoData,
                        'success': fnCallback
                    });
                },
                "columnDefs": [
                    {
                        "render": function (data, type, row) {
                            if (data == true) {
                                return '<span class="label label-sm label-success">激活</span>'
                            } else {
                                return '<span class="label label-sm label-inverse">未激活</span>'
                            }
                        },
                        "targets": 2
                    }
                ],

var edit_str =
       '<div class="hidden-sm hidden-xs btn-group">' +
       '<button id="edit" class="btn btn-xs btn-success">' +
       '<i class="ace-icon fa fa-pencil-square-o bigger-120"></i>' +
       '</button>' +
       '<button id="delete" class="btn btn-xs btn-danger">' +
       '<i class="ace-icon fa fa-trash-o bigger-120"></i>' +
       '</button>' +
       '</div>'

    //initiate dataTables plugin
    var myTable = $('#dynamic-table').DataTable({
        bAutoWidth: false,
        "columnDefs": [
            {
                "render": function (data, type, row) {
                    row.edit = edit_str // 往每一行最后一列添加一个属性,即一列
                    if (data == true) {
                        return '<span class="label label-sm label-success">激活</span>'
                    } else {
                        return '<span class="label label-sm label-inverse">未激活</span>'
                    }
                },
                "targets": 2
            }
        ],

$('#dynamic-table tbody').on('click', 'button#edit', function () {
    var data = myTable.row($(this).parents('tr')).data();

    $.ajax({
        url: "xxx",
        type: "POST",
        dataType: "json",
        data: data
    }).done(function (resp) {
        if (resp.ret == true) {
            myTable.ajax.reload();
        } else {
            alert("编辑失败!")
        }
    }).fail(function () {
        alert("网络错误！")
    });
});


$('#dynamic-table tbody').on('click', 'button#delete', function () {
    var data = myTable.row($(this).parents('tr')).data();

    var title_msg;
    var text_msg;
    $.ajax({
        type: "post",
        url: "xxxx",
        dataType: "json",
        data: data,
        success: function (resp) {
            if (resp.ret) {
                    alert("成功删除!");
                    myTable.ajax.reload();
                }
            } else {
                alert("删除失败!");
            }
        }
    });
})

OS: Ubuntu 16.04 64bit
Java: 1.7.0_40
Hive: 2.1.0
Hadoop: 2.6.4
Hbase: 0.98.22-hadoop2
Kylin: 1.5.4.1

sudo tar -xvf apache-kylin-1.5.4.1-bin.tar.gz -C /usr/dev

### 大数据相关
## Hbase
export HBASE_HOME=/usr/dev/hbase-1.2.3
export HBASE_CONF_DIR=${HBASE_HOME}/conf

## Hadoop
export HADOOP_HOME=/usr/dev/hadoop-2.6.4
export HADOOP_CONF_DIR=${HADOOP_HOME}/etc/hadoop
export YARN_CONF_DIR=${HADOOP_HOME}/etc/hadoop

## Hive
export HIVE_HOME=/usr/dev/apache-hive-2.1.0-bin
export HCAT_HOME=${HIVE_HOME}/hcatalog
export HIVE_CONF=${HIVE_HOME}/conf

## Kylin
export KYLIN_HOME=/usr/dev/apache-kylin-1.5.4.1-bin

cd ${KYLIN_HOME}/conf
vim kylin.properties
kylin.job.hive.database.for.intermediatetable=kylin_middle

hadoop fs -mkdir /kylin
hadoop fs -chown -R anonymous:anonymous /kylin

cd ${KYLIN_HOME}/bin
./check-env.sh

KYLIN_HOME is set to /usr/dev/apache-kylin-1.5.4.1-bin
cat：无效选项 -- 1
Try 'cat --help' for more information.
-mkdir: Not enough arguments: expected 1 but got 0
Usage: hadoop fs [generic options] -mkdir [-p] <path> ...
failed to create , Please make sure the user has right to access

sed -i 's/`sh /`bash /g' *.sh

./check-env.sh

./kylin.sh start

cd ${KYLIN_HOME}/bin
./sample.sh
./kylin.sh stop
./kylin.sh start

select part_dt,sum(price) from kylin_sales group by part_dt;

OS: Ubuntu 16.04 LTS 64bit
JDK: 1.7.0_40
Hadoop:hadoop-2.6.4
➜  Blog git:(master) ✗ whoami 
anonymous

tar -xvf hbase-1.2.3-src.tar.gz -C /usr/dev
cd /user/dev/hbase-1.2.3
mvn package -Dmaven.test.skip=true	# 跳过单元测试，不然测试时间会非常长

<configuration>
  <property>
    <name>hbase.rootdir</name>
    //这里设置让HBase存储文件的地方
    <value>file:///tmp/hbase</value>
  </property>
  <property>
    <name>hbase.zookeeper.property.dataDir</name>
    //这里设置让HBase存储内建zookeeper文件的地方
    <value>/tmp/zookeeper</value>
  </property>
</configuration>

./bin/start-hbase.sh

➜  hbase-1.2.3 jps
22228 Jps
2738 Main
21914 HMaster

http://127.0.0.1:16010/

HBASE_MANAGE_XK=true

<configuration>
  <property>
    <name>hbase.rootdir</name>
    //这里设置让HBase存储文件的地方
    <value>hdfs://localhost:9000/hbase</value>
  </property>
  <property>
    <name>hbase.zookeeper.property.dataDir</name>
    //这里设置让HBase存储内建zookeeper文件的地方
    <value>/tmp/zookeeper</value>
  </property>
  <property>
    <name>hbase.cluster.distributed</name>
    <value>true</value>
  </property>
</configuration>

<property>
    <name>fs.defaultFS</name>
    <value>hdfs://localhost:9000</value>
</property>

localhost: +======================================================================+
localhost: |                    Error: JAVA_HOME is not set                       |
localhost: +----------------------------------------------------------------------+
localhost: | Please download the latest Sun JDK from the Sun Java web site        |
localhost: |     > http://www.oracle.com/technetwork/java/javase/downloads        |
localhost: |                                                                      |
localhost: | HBase requires Java 1.7 or later.                                    |
localhost: +======================================================================+
starting master, logging to /usr/dev/hbase-1.2.3/bin/../logs/hbase-anonymous-master-anonymous.out
starting regionserver, logging to /usr/dev/hbase-1.2.3/bin/../logs/hbase-anonymous-1-regionserver-anonymous.out

export JAVA_HOME=/usr/dev/jdk1.7.0_40

cd /usr/dev/hadoop-2.6.4
./sbin/start-dfs.sh
./sbin/start-yarn.sh
./sbin/mr-jobhistory-daemon.sh start historyserver

cd /usr/dev/hbase-1.2.3
./bin/start-hbase.sh

➜  hbase-1.2.3 jps
26874 HRegionServer
24854 SecondaryNameNode
26087 HQuorumPeer
25125 NodeManager
24529 NameNode
26160 HMaster
24671 DataNode
2738 Main
25312 JobHistoryServer
25008 ResourceManager
27040 Jps

regionserver running as process 23997. Stop it first.

sudo kill -9 23997

hdfs dfs -ls /hbase