how to shuffle an array in shell

最新推荐文章于 2019-12-17 14:37:33 发布
原创 最新推荐文章于 2019-12-17 14:37:33 发布 · 89 阅读 · 0 ·
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#linux #shell

本文提供了关于 Bash 的常见问题解答 026，深入探讨了如何有效地进行 Bash 脚本的镜像设置与管理，适合对 Bash 脚本有兴趣的技术人员阅读。
Quick Start Guide for Apache Spark
AI天才研究院
08-03 1852
作者：禅与计算机程序设计艺术Spark is a distributed computing framework that provides APIs in Java, Scala, Python and R programming languages to developers to write fast, scalable, fault-tolerant applications that can process big data at scale. It offers high-level abstr
[Spark版本更新]--Spark-2.0.1版本的最新改动
欢迎来到我的博客，一起探索代码里的世界！
11-12 6799
spark-2.0.1版本的最新改动 Sub-task(子任务) [SPARK-15232] - Add subquery SQL building tests to LogicalPlanToSQLSuite [SPARK-15698] - Ability to remove old metadata for structure streaming MetadataLog [SPARK-...
Linux shell 高级用法
大鹏博客
11-08 1473
1、文本行首添加字符串：HEAD (&不加也可)          sed 's/^/HEAD&/g' test.file 2、文本行尾部添加字符串：TAIL (&不加也可)           sed 's/$/&TAIL/g' test.file  3、随机抽取文本中10行（shuffle简写）          shuf -n10 test.file...
【shell】【awk】常用命令 使用awk 按行打乱(shuffle)数据文件
delacroix_xu的专栏
05-22 6107
cat  1.txt  | awk  -F"\3" 'BEGIN{srand();}{value=int(rand()*10000000); print value"\3"$0 }' | sort | awk -F"\3" '{print $2}'
How to Program in C++
rabbitjacky的专栏
02-22 1513
How to Program in C++ http://cs.fit.edu/~mmahoney/cse2050/how2cpp.html How to Program in C++ You may copy this file for noncommercial use. The latest version is located at cs.fit.ed
How to program in C++ （The most important and basic materials）
luoshenFU的专栏
03-08 4190
How to Program in C++ You may copy this file for noncommercial use. The latest version is located at cs.fit.edu/~mmahoney/cse2050/how2cpp.html updated Apr. 14, 2010. Please report errors to Matt Ma
How to Build a Python Bot That Can Play Web Games
03-09 2970
转：http://code.tutsplus.com/tutorials/how-to-build-a-python-bot-that-can-play-web-games--active-11117 In this tutorial we'll explore the insand outs of building a Computer Vision-based game bot in Pyt
CHAPTER 1 Using neural nets to recognize handwritten digits
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This is bill的专属博客
10-13 1万+
The human visual system is one of the wonders of the world. Consider the following sequence of handwritten digits:Most people effortlessly recognize those digits as 504192. That ease is deceptive. In
Spark之spark shell
weixin_30432579的博客
09-13 243
前言：要学习spark程序开发，建议先学习spark-shell交互式学习，加深对spark程序开发的理解。spark-shell提供了一种学习API的简单方式，以及一个能够进行交互式分析数据的强大工具，可以使用scala编写（scala运行与Java虚拟机可以使用现有的Java库）或使用Python编写。 1.启动spark-shell spark-shell的本质是在后台调用了sp...
Keras Tutorial: Deep Learning in Python
omnispace的博客
10-30 1831
This Keras tutorial introduces you to deep learning in Python: learn to preprocess your data, model, evaluate and optimize neural networks. ▲21 ▲21 Deep Learning
A Fast Method to Stream Data from Big Data Sources
slamer的专栏
08-30 1172
From: https://indico.io/blog/fast-method-stream-data-from-big-data-sources/ Maybe you’re training a machine learning model on a really big dataset. Perhaps you’ve got a big database dump and
[合并前] 当前内存使用: 233.81 MB 运行过程中出错: malloc of size 3142721664 failed Traceback (most recent call last): File "d:\股票量化数据库\股票量化数据库\1.5.py", line 477, in run self.load_and_preprocess_data() File "d:\股票量化数据库\股票量化数据库\1.5.py", line 255, in load_and_preprocess_data self.data = table.to_pandas() ^^^^^^^^^^^^^^^^^ File "pyarrow\\array.pxi", line 884, in pyarrow.lib._PandasConvertible.to_pandas File "pyarrow\\table.pxi", line 4192, in pyarrow.lib.Table._to_pandas File "D:\Anaconda\Lib\site-packages\pyarrow\pandas_compat.py", line 776, in table_to_dataframe blocks = _table_to_blocks(options, table, categories, ext_columns_dtypes) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "D:\Anaconda\Lib\site-packages\pyarrow\pandas_compat.py", line 1129, in _table_to_blocks result = pa.lib.table_to_blocks(options, block_table, categories, ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "pyarrow\\table.pxi", line 3115, in pyarrow.lib.table_to_blocks File "pyarrow\\error.pxi", line 91, in pyarrow.lib.check_status pyarrow.lib.ArrowMemoryError: malloc of size 3142721664 failed Traceback (most recent call last): Cell In[1], line 1 runfile('D:/股票量化数据库/股票量化数据库/1.5.py', wdir='D:/股票量化数据库/股票量化数据库') File D:\Anaconda\Lib\site-packages\spyder_kernels\customize\spydercustomize.py:528 in runfile return _exec_file( File D:\Anaconda\Lib\site-packages\spyder_kernels\customize\spydercustomize.py:574 in _exec_file with NamespaceManager(filename, namespace, current_namespace, File D:\Anaconda\Lib\site-packages\spyder_kernels\customize\namespace_manager.py:110 in __exit__ ipython_shell.kernel._running_namespace = ( File D:\Anaconda\Lib\site-packages\traitlets\traitlets.py:700 in __get__ return self.get(obj, cls) File D:\Anaconda\Lib\site-packages\traitlets\traitlets.py:651 in get def get(self, obj, cls=None): KeyboardInterrupt
最新发布
08-10
df = pd.merge(df, daily_data, how='left', on=['stock_code','date_only']) df.drop(columns=['date_only'], inplace=True) # 3. 优化数据类型 for col in ['open','high','low','close','volume','amount']: ...
基于机器学习和深度学习的推荐系统实战【图书推荐、电影推荐、音乐推荐】
Together_CZ的博客
12-17 6897
推荐系统在我们日常生活中发挥着非常重要的作用，相信实际从事过推荐相关的工程项目的人或多或少都会看多《推荐系统实战》这本书，我也是读者之一，个人感觉对于推荐系统的入门来说这本书籍还是不错的资料。很多商场、大厂的推荐系统都是很复杂也是很强大的，大多是基于深度学习来设计强有力的计算系统，本文是笔者在公司实践项目中实际做过的推荐系统实践经验分享。技术层面主要从机器学习和深度学习两个方面来分别...
重磅！Spark运行内幕 打通Spark系统运行内幕机制流程
大模型与Agent智能体
02-14 4417
Spark运行内幕 1、编写的一个WordCount的例子 【例】WordCount代码 1.       val conf = new SparkConf() //创建SparkConf对象 conf.setAppName("Wow,My First Spark App!") //设置应用程序的名称， conf.setMaster("local") // 程序在本地运行，但是以下的
"error in locking authority file .Xauthority
渴死的火烈鸟
01-11 6362
今天在windows上vncviewer连linux机器的时候，报这个错误。   解决方案： 删除所有~/.Xauthority文件。
ZFS文件系统的特点以及调优
渴死的火烈鸟
10-14 2814
Record SizeRecord Size 也就是通常所说的文件系统的block size。ZFS采用的是动态的Record Size，也就是说ZFS会根据文件大小选择*适合*的512字节的整数倍作为存储的块大小，最大的RecordSize为128KB。通常没有必要手工设置Record Size。如果手工把Record Size调小，将不会得到空间的节省，并且常常会影响性能。ZFS的Block是...
set cpu performance mode
渴死的火烈鸟
11-15 1589
A cheap/dirty little hack to increase idle CPU frequency and increase performance in general (don't blame me when your battery runs dry in about 3 hours):(must have root first!)cat /proc/cpuinfo (use ...
shell 按行读取并保存成数组
渴死的火烈鸟
11-06 900
从ip.txt里读取IP.然后把IP地址赋值到一个数组里.IP文件如下：Address:  220.181.26.163Address:  220.181.26.174Address:  220.181.26.175Address:  220.181.26.176Address:  220.181.19.228Address:  220.181.19.229Address:  220.181.26...
vim的一个问题
渴死的火烈鸟
01-12 546
E575: viminfo: Illegal starting char in line: <ca><fe><ba><be> E575: viminfo: Illegal starting char in line: Exceptions^G E575: viminfo: Illegal starting char in line: Source...
how to create an array of linked list in java.
12-05
LinkedList[] linkedListArray = new LinkedList[arraySize]; // 初始化链表数组中的每个链表 for (int i = 0; i < arraySize; i++) { linkedListArray[i] = new LinkedList(); } // 向链表中添加元素 for ...
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