strip | 易学教程

磁盘存储和文件系统(六)

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 磁盘存储和文件系统(六) RAID-0 读、写性能提升可用空间：N*min(S1,S2,...) 无容错能力最少磁盘数：2，2+ 如：disk0,disk1,disk3组成一个RAID-0，假设为/dev/sda(三块硬盘的总容量组合而成的),要求三块硬盘的容量相同，如果不同，就取最小的容量*3=总容量。逻辑上把三块硬盘合到一起用，系统并不知道，这样就实现了跨硬盘分区,然后创建文件系统，挂载，向这块硬盘中写入数据。假如往/sdv/sda上写100M的数据，会把100M的数据切成小块，这个小块就叫做 chrunk, 假设这个小块为512k,依次将小块chrun 512k向三块硬盘中写入，实现了并行写入，这样效率提高了很多。如果任何一个硬盘坏了，数据就被破坏了，没有容错能力。RAID-0又叫做条带卷（strip）。 RAID-1 读性能提升、写性能略有下降可用空间：1*min(S1,S2,...) 有冗余能力最少磁盘数：2，2N RAID-4 读写性能提升可用空间：n-1/n*min(S1,S2,...) 最少磁盘数：3，3+ 多块数据盘异或运算值存于专用校验盘。校验盘压力很大 RAID-5 读、写性能提升可用空间：（N-1）*min（S1，S2，...) 有容错能力：允许最多1块磁盘损坏最少磁盘数

PHP - Strip a specific string out of a string

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问题 I've got this string, but I need to remove specific things out of it... Original String: hr-165-34.sh-290-92.ch-215-84.hd-180-1.lg-280-64 . The string I need: sh-290-92.ch-215-84.lg-280-64 . I need to remove hr-165-34. and hd-180-1 . ! EDIT: Ahh ive hit a snag! the string always changes, so the bits i need to remove like "hr-165-34." always change, it will always be "hr-SOMETHING-SOMETHING." So the methods im using wont work! Thanks 回答1: Depends on why you want to remove exactly those

WordPress HTML Editor Removing Form Tags

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问题 My companies wordpress HTML editor is removing html form tags whenever I try to add this search form to the front page via the editor. On my localhost it works fine, but I can't figure out why my companies WordPress is taking it all out. Here is what I try to add: <div id="bigSearch"> <form action="#" method="post"> <input type="text" name="keyword" placeholder="Search By Keyword...." /> <div id="statusInputs"> <select class="status" name="statusOne"> <option selected="selected">Status<

I need to strip a Google Alerts URL

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问题 To preface, I know there are similar threads about this, but I am using C#, not java, or python, or Php. Some threads provide a solution for a single URL, which is not universal. Thanks for not flagging me. So I am using Google Alerts to get links to articles via email. I have already written a program that can strip the URLs out of the email as well as another program to scrape the websites. My issue is that the links in the google alerts email look like this: https://www.google.com/url?rct

Replace part of the string

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问题 Echo $var gives me something like http://342.234.243.142/data/somethingmore/ IP-address everytime is different. Instead of "somethingmore" can something like "/folder/images/2011/gallery/file.jpg" (anything) How do I strip from this string part with the ip and /data/ folder? $var could become /somethingmore/ 回答1: $url = 'http://342.234.243.142/data/somethingmore/'; echo basename($url); 回答2: $str = "http://342.234.243.142/data/somethingmore/"; $str = explode('/', $str); print_r($str); 回答3: Use

strip a word when is a single word only, not part of a composite word

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问题 I have the following function, I want it to strip "alpha" when is a single word only and not a part of a composite word like "alphadog". Now instead I just see "dog" and it's not good. Any help? function stripwords($string) { // build pattern once static $pattern = null; if ($pattern === null) { // pull words to remove from somewhere $words = array('alpha', 'beta', '-'); // escape special characters foreach ($words as &$word) { $word = preg_quote($word, '#'); } // combine to regex $pattern =

Rewrite Youtube URL

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问题 I have some YouTube URLs stored in a database that I need to rewrite. They are stored in this format: $http://youtu.be/IkZuQ-aTIs0 I need to have them re-written to look like this: $http://youtube.com/v/IkZuQ-aTIs0 These values are stored as a variable $VideoType I'm calling the variable like this: $<?php if ($video['VideoType']){ $echo "<a rel=\"shadowbox;width=700;height=400;player=swf\" href=\"" . $video['VideoType'] . "\">View Video</a>"; $}?> How do I rewrite them? Thank you for the help

strip span tags from string with jquery

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问题 I am wanting to take the text value of a p tag when I press enter $.keynav.enterDown = function () { var accom = $('#suggestions p.keynavon').html(); alert(accom); } This is working great but the results contain <span> and </span> tags, is there anyway I can strip those tags from the string? 回答1: If you just want the text, which sounds like what you're after, use .text() instead of .html(), like this: $.keynav.enterDown = function () { var accom = $('#suggestions p.keynavon').text(); alert

Converting Seconds to Time Format

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问题 I am trying to find a good solution for converting seconds to time format. I have this function which works fine for my needs so far. function secondstotime(secs) { var t = new Date(1970,0,1); t.setSeconds(secs); var s = t.toTimeString().substr(0,8); if(secs > 86399) s = Math.floor((t - Date.parse("1/1/70")) / 3600000) + s.substr(2); return s; } alert(secondstotime(1920)); So you can run this in jsfiddle http://jsfiddle.net/7Pp5z/ So this works great and works for hours etc but i am looking

remove spaces and carriage returns from Plone content with Diazo(minimizing html code)

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问题 I have a Plone site, themed with plone.app.theming. how diazo minimizing html content? and remove spaces and carriage returns Content: <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> </head> <body> <div id="content"> <p>Not empty paragraph text</p> <p><span>Not empty paragraph element</span> </div> </body> </html> Output: <html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> </head><body><div id="content"><p>Not empty paragraph