第1季-嵌入式的童年-第19课：安装Linux系统到开发板
第1季-嵌入式的童年-第19课：安装linux系统到开发板 昨天来源：CSDN博客 嵌入式技术（1） 第18课已经完成了引导程序的安装。 本节课就是利用引导辅助程序，通过USB将LINUX安装到开发板的nand flash。 1、linux系统的构成： Bootloder、linux内核、文件系统 2、硬件连接 flash选择开关位于nor...
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LVS产生背景、原理及LVS-DR应用实例（一）
一、什么是 lvs ？ 它产生的背景，使用场景是什么？ LVS(linux Virtual Server) 可以理解为一个虚拟服务器系统 。 Internet 的飞速发展，网络带宽的增长， Web 服务中越来越多地使用 CGI 、动态主页等 CPU 密集型应用，这对服务器的性能有较高要求，单台服务器已经无法满足需要，所以集群自然的成为一种解决方案，而 LVS 便是其中的一种集群方案。 集群...
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yum和编译两种方式升级or降级Centos内核
今天探讨用yum和编译两种方式升级或者降级内核版本： 升级：比如玩kvm，docker等虚拟化，centos内核则升级尤为重要（虽然2.6.x内核通过加载模块也可以玩，但是效果不如3.x） 降级：如果发现内核在危险漏洞列，降级内核则显得尤为重要。当然如果有特殊需求，也可以降级内核。 1、yum方式升级内核版本 1.1）查看当前系统内核版本 [root@node4 ~]# cat...
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VMware Converter Standalone 6.1.1 P2V迁移Linux一例
VMware vCenter Converter Standalone是P2V的重要工具，可以迁移windows,linux等操作系统，但是经常会出现一些细节问题造成无法成功，本文通过VMware vCenter Converter standalone6.1.1工具成功迁移DELL R310老旧服务器（Centos5.8...
View ArticleGetting Started with Microsoft SQL Server on Red Hat Enterprise Linux
Getting Started with Microsoft SQL Server on Red Hat Enterpriselinux Posted byTakayoshi Tanaka on December 14, 2016December 14, 2016 Microsoft announced SQL Server on Linux public preview ,so now you...
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Beginner's Guide for Flowblade Video Editor
This guide introduces simple steps to edit and produce video with Flowblade video editor in GNU/linux. This guide includes how to import videos and audios, insert those into timeline, edit the...
View ArticleBlast from the Past: Phoenix Rising
This post was originally published on December 12, 2009. The original can befound here. As we prepare to bring The linux Experiment to a close over the coming weeks, I find that this has been a time...
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How to build a Ceph Distributed Storage Cluster on CentOS 7
Ceph is a widely used open source storage platform. It provides high performance, reliability, and scalability. The Ceph free distributed storage system provides an interface for object, block, and...
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TREZOR/U2F Login into Your Linux Mint
TREZOR/U2F Login into Your linuxMint Adapted with permission from Shane Antyr’s blog TREZOR recently upgraded the firmware for their handy devices to include U2F functionality. This is great for...
View ArticleMike C. Fletcher: Review: Dell XPS 15 (9550) as a Linux Developer's Laptop
So I've now had a Dell XPS 15 9550 as my primary driver for approximately 9 months. I covered the (painful) setup process a bit when I first got it, so I won't repeat most of that here. Suffice it to...
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Set Your Clocks to Decimal Time
Many stop lights at street intersections display a countdownof the remaining seconds before the light changes. If you’re like me, you count this time in your head and then check how in sync you are....
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Dave Taylor and Brandon Perry's Wicked Cool Shell Scripts (No Starch Press)
The new second edition of Dave Taylor and Brandon Perry's classic Wicked Cool Shell Scripts , published by No Starch Press , features a smorgasbord of favorite scripts and 23 brand-new ones. Subtitled...
View Article一次PHP脚本执行卡住的问题排查记录
最近从监控上发现，我们一个服务的一台机器负载比同机房的其他机器要高，而流入流出流量没有差别，进一步查看发现每个机房都有一台机器存在相同的现象，梳理后发现有问题的这些机器相比正常的机器多跑了一些php脚本，于是猜测是执行脚本出问题导致。 登录机器后执行 top 命令，果然发现存在一个CPU占用较高的PHP进程，然后执行下列命令，发现存在一个由crontab启动的执行了很长时间的PHP脚本： ps...
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Gene homology Part 2 - creating directed networks with igraph
In mylast post I created a gene homology network for human genes. In this post I want to extend the network to include edges for other species. First, I am loading biomaRt and extract a list of all...
View ArticleAdding Spell checking to Konversation
If you're using KDE and need an IRC client Konversation is a fantastic application that can do just that. The GUI driven IRC client it's near perfect out the box. The one thing that simply doesn't want...
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Linux 25年发展历史带给我们的9项启示
【51CTO.com快译】linux内核社区于2016年迎来了其二十五岁生日，很多朋友询问我们实现项目长久发展及成功的秘诀。对于这样的问题，我通常会以笑话回应――因为说实话，我也不知道这一切是怎样实现的。不过重要的是，我们之所以能够这样摸索向前，是因为社区自身拥有着强大的反省与变革能力。...
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How to make Linux more trustworthy
While the fight against government-mandated software backdoors raged for most of 2016―including the showdown between Apple and the FBI over the San Bernardino shooter's iPhone, and the UK's new...
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McAfee VirusScan Linux企业版存在多个高危漏洞，请尽快升级
Intel Security旗下的安全产品 McAfee VirusScan linux企业版 被曝受10个漏洞影响，由几个漏洞构成的攻击链可以完成以root权限远程执行代码。 几个月之前，麻省理工学院林肯实验室的安全专家Andrew Fasano就在McAfee VirusScan Linux企业版（VSEL）中发现多个漏洞，这些漏洞存在于 VSEL 1.9.2版本至2.0.2版本 。他在 博客...
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0-days hitting Fedora and Ubuntu open desktops to a world of hurt
If you run a mainstream distribution of linux on a desktop computer, there's a good chance security researcher Chris Evans can hijack it when you do nothing more than open or even browse a specially...
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【Linux】Linux下使用wget 命令下载JDK7的方法
转载请注明出处： http://blog.csdn.net/qq_26525215 本文源自 【 大学之旅_谙忆的博客 】 前几天去阿里云买了学生特权的云服务器。 现在下载JDK的时候遇到了麻烦， 输入命令: wget http://download.oracle.com/otn-pub/java/jdk/7u79-b15/jdk-7u79-linux-x64.rpm...
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