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操作系统原理作业(2)在ubuntu中编写一个shell从文件中读取每一行显示并统计总行数

跟風遠走 提交于 2020-03-10 14:51:52
测试文件: 测试的相关代码: #!/bin/bash while read line do echo $line done < test.txt #!/bin/bash cat test.txt | while read line do echo $line done 在文件夹中加入test.txt和homework.sh 切换到此文件夹 执行方式1: chmod +x ./homework.sh ./homework.sh 执行方式2: bash homework.sh 测试结果 来源: CSDN 作者: you_lxy 链接: https://blog.csdn.net/qq_43148490/article/details/104768314

A+B for Input-Output Practice (II)

℡╲_俬逩灬. 提交于 2020-03-10 13:29:35
Problem Description Your task is to Calculate a + b. Input Input contains an integer N in the first line, and then N lines follow. Each line consists of a pair of integers a and b, separated by a space, one pair of integers per line. Output For each pair of input integers a and b you should output the sum of a and b in one line, and with one line of output for each line in input. Sample Input 2 1 5 10 20 Sample Output 6 30 代码: # include <stdio.h> int main ( ) { int n ; scanf ( "%d" , & n ) ; while ( n -- ) { long a , b ; scanf ( "%ld%ld" , & a , & b ) ; printf ( "%ld" , a + b ) ; } return 0 ;

A+B for Input-Output Practice (II)

痴心易碎 提交于 2020-03-10 04:35:19
Problem Description Your task is to Calculate a + b. Input Input contains an integer N in the first line, and then N lines follow. Each line consists of a pair of integers a and b, separated by a space, one pair of integers per line. Output For each pair of input integers a and b you should output the sum of a and b in one line, and with one line of output for each line in input. Sample Input 2 1 5 10 20 Sample Output 6 30 # include <stdio.h> int main ( void ) { int n ; int a , b ; scanf ( "%d" , & n ) ; //数据组数 while ( n -- ) { scanf ( "%d%d" , & a , & b ) ; printf ( "%d\n" , a + b ) ; //输出换行

AT LINE-SELECTION

怎甘沉沦 提交于 2020-03-09 04:19:47
AT LINE-SELECTION Syntax 语法 AT LINE-SELECTION. Effect 作用 This statement defines an event block whose event is triggered by the ABAP runtime environment during the display of a screen list - provided the scren cursor is on a list line and you select a function using the function code PICK. Through the definition of this event block, the standard list status is automatically enhanced in such a way that the function code F2 and, with it, the double-click mouse function is linked up to the function code PICK. 这个语句定义了一个在屏幕列表显示期间被 ABAP 运行环境触发的事件块-倘若屏幕指针在一个列表行上并且你用功能码 PICK 选择了一个功能。通过这个事件块的定义

结巴分词

▼魔方 西西 提交于 2020-03-06 17:37:56
1.文本形式: import jieba text = '我们在野生动物园玩' wordlist = jieba.lcut ( text ) # wordlist默认是列表形式 print ( wordlist ) 输出结果: 2.文件形式 import jieba import jieba.analyse jieba.load_userdict ( "D:/python course/wordsegment/dict/dict.txt" ) # 匹配的词语词典 jieba.analyse.set_stop_words ( "D:/python course/wordsegment/dict/stop_words.txt" ) # 停用词词表 def splitSentence ( inputFile, outputFile ) : fin = open ( 'D:\python course\wordsegment\data\input.txt' , 'r' ) # 待分词文本 fout = open ( 'D:\python course\wordsegment\data\output.txt' , 'w' ) # 分词结果 for line in fin: line = line.strip ( ) line = jieba.analyse.extract_tags (

Horizontal line between two words

社会主义新天地 提交于 2020-03-05 04:00:50
问题 How can I add a line between this two words with css: Last Action Items------------------------------View more---- Without the "-" I did this: https://jsfiddle.net/3L766kdo/1/ but I think there is a better way to do it (with the line surrounding View More) HTML <div class='container c-decorated-header'> <h3><span>Last Action items</span></h3> <div class='c-decorated-header_link-view-more'> <a href="www.something.com">View More</a> </div> <div> SCSS .c-decorated-header { position: relative; h3

getline函数

拈花ヽ惹草 提交于 2020-03-04 18:16:06
如果希望能在最终输入的字符串中保留输入的空格符,这时候应该用 getline(cin,string) 函数从给定的输入流中读取内容,至到遇到换行符为止(注意换行符也被读进来了),然后把所读内容存入那个string对象中去(注意不存换行符) int main() { string line; //每次读入一整行,直到到达文件末尾 while (getline(cin, line)) cout << line << endl; return 0; } 来源: CSDN 作者: hejiegoubao 链接: https://blog.csdn.net/hejiegoubao/article/details/104657073

帝国cms7.0修改默认搜索模版中的分页[!--show.page--]

ぐ巨炮叔叔 提交于 2020-03-03 14:01:54
修改默认搜索模版的分页是在e/class/connect.php下 搜索下function page1就是我们要修改的分页了 下面贴上我修改后的分页 //前台分页 function page1($num,$line,$page_line,$start,$page,$search){ global $fun_r; if($num<=$line) { return ''; } $search=RepPostStr($search,1); $url=eReturnSelfPage(0).'?page'; $snum=2;//最小页数 $totalpage=ceil($num/$line);//取得总页数 $firststr='<a title="'.$fun_r['trecord'].'" class="disabled">'.$num.'</a>'; //上一页 if($page<>0) { $toppage='<a href="'.$url.'=0'.$search.'" class="disabled">'.$fun_r['startpage'].'</a>'; $pagepr=$page-1; $prepage='<a href="'.$url.'='.$pagepr.$search.'" class="disabled">'.$fun_r['pripage'].'</a>';

6.3 The Memory Hierarchy

允我心安 提交于 2020-03-03 13:45:53
存储器的结构 最近在阅读GPU相关文献的时候看到cache相关的术语,上一次看到这些还是在学校里的时候,有些记不清了,翻了下CSAPP复习了下cache line,cache set相关的内容。 Cache的组织 cache分为很多个set,每个set里面有很多个cache line,每个Cache line包含了valid bit和tag bits,这样内存地址从高到低分为三个部分: tags,用来确定set中的哪个cache line set index,用来选择set block offset in cache line,用来在cache line定位内存偏移 三种不同cache layout direct mapped caches 最简单,每个set中只有一个cache line 缺点是当连续访问只有tag不同的多个内存地址时,会导致连续cache miss set associative caches 是两种方案的折中设计 full associative caches 最复杂,只有一个set 缺点是一个set中有很多cache line,找到复合tag的时间复杂度很高,硬件不好设计 来源: https://www.cnblogs.com/hamwj1991/p/12401363.html

测试你的Python 水平----7

怎甘沉沦 提交于 2020-03-02 11:43:49
1、问:Cpython,Jython和IronPython有什么不同? 答:三者都是python编译器的实现方式;Cpython是python的标准实现;Jypthon是Python的Java实现;IronPython是Python的.net实现。 2、 问:exec,eval,execfile的用途是什么? 答:1)exec用来执行存储在字符串中的python语句,例如exec(“print ‘hello world!’”); 2) Eval把存储的字符串当成表达式求值,例如eval(“1+2+3+4+5+6”); 3) execfile用来执行一个文件脚本,例如execfile(“test.py”); 3、 问:如何查看一个模块的所有属性? 答:dir(moduleName) ps:dir函数真的是python中一个伟大的发明,通过它反射获取模块的属性; 4、 问:请使用python获取http://www.freelycode.com(自由编码)首页的内容。 答:使用urllib模块实现; import urllib def getHtml(url): page = urllib.urlopen(url) html = page.read() return html html = getHtml("http://www.freelycode.com") print html