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大数据开发基础编程入门
Spark修炼之道(基础篇)——Linux
大数据开发基础
:第九节:Shell
编程入门
(一)
本节主要内容 shell
编程
简介 变量定义 常用特殊变量 1.shell
编程
简介 学习linux操作系统最让人着迷的事情莫过于shell脚本
编程
,这是因为如果要完成某些复杂的功能,单纯地通过GUI操作不可能达到,shell脚本可以直接与操作系统内核打交道,...
Spark修炼之道(基础篇)——Linux
大数据开发基础
:第十节:Shell
编程入门
(二)
参考书目:linux shell scripting cookbook 本节主要内容 shell命令行中的基本运算 文件描述符与文件重定向 1.shell命令行中的基本运算 通过上一节我们知道,Linux Bash shell 命令行的变量都被解析成字符串,如/变量被解析为字符串 root@...
Spark修炼之道(基础篇)——Linux
大数据开发基础
:第十二节:Shell
编程入门
(四)
如果代码量比较
大
或者脚本
开发
人员知道代码出错的大致位置,则可以使用set-x;set+x;命令进行局部调试,如#!bin/bash#Filename:debug2.sh for i in {1.6} do set-x/set-x表示跟在该命令后的脚本输出调试信息 echo$i/set+x表示从此处禁用...
Spark修炼之道(基础篇)——Linux
大数据开发基础
:第十四节:Shell
编程入门
(六)
本文主要内容 case控制结构 read命令 管道 1.case控制结构 参考:http://blog.csdn.net/dreamtdp/article/details/8048720 case控制结构语法格式:case expression in pattern1)statements;pattern2)statements;esac case控制结构较之于if...
Spark修炼之道(基础篇)——Linux
大数据开发基础
:第十一节:Shell
编程入门
(三)
本节主要内容 shell数组 shell命令别名 时间操作 1.Shell数组 同C、C++等语言一样,shell脚本也提供了数组这样一个重要的数据结构,shell中的数组有两种,一种为普通数组,另外的一种称为关联数组。普通数据的存取通过整数进行,关联数组的...
Spark修炼之道(基础篇)——Linux
大数据开发基础
:第十三节:Shell
编程入门
(五)
本节主要内容 while循环控制结构 if条件判断 until循环控制结构 1.while循环控制结构 本节例子来源:http://blog.chinaunix.net/uid-25880122-id-2901409.html 语法格式:while expression do command command done(1)计数器格式 适用于...
1
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linux大数据开发基础编程入门
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spark修炼之道大数据开发基础编程入门
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spark修炼之道大数据开发基础
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shell大数据编程入门
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spark修炼之道大数据编程入门
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linux大数据编程入门
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大数据
阿里云大数据是简单、易用、全托管的云原生大数据服务,包括自研一体化大数据智能计算平台ODPS(MaxCompute,Hologres,DataWorks,Flink))和云原生开源大数据产品体系(EMR,Elasticsearch及生态产品)。
了解详情
方案咨询
大数据体验馆
ODPS
MaxCompute
实时数仓Hologres
数据开发
DataWorks
数据总线DataHub
开源大数据
E-MapReduce
实时计算 Flink 版
检索分析
Elasticsearch
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大数据
阿里云大数据是简单、易用、全托管的云原生大数据服务,包括自研一体化大数据智能计算平台ODPS(MaxCompute,Hologres,DataWorks,Flink))和云原生开源大数据产品体系(EMR,Elasticsearch及生态产品)。
了解详情
方案咨询
大数据体验馆
ODPS
MaxCompute
实时数仓Hologres
数据开发
DataWorks
数据总线DataHub
开源大数据
E-MapReduce
实时计算 Flink 版
检索分析
Elasticsearch