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【转】Linux CentOS 6 解决Device eth0 does not seem to b

一.故障现象: [root@c1node01~]#servicenetworkrestart Shuttingdownloopbackinsterface:[OK] Bringinguploopbackinsterface:[OK] Bringingupinterfaceeth0:Deviceeth0doesnotseemtobepresent,delayinginitialization.[FA...

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bash: lspci: command not found解决方法

在CentOS虚拟机使得lspci查看硬件信息。使用时,提示bash:lspci:commandnotfound,大多使用/sbin/lspci即可,我发现我的系统中/sbin下也没有。使用yuminstalllspci显示没有这个包。 #yumwhatprovides*/lspci pciutils-3.1.4-9.el6.x86_64:PCIbusr......

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Linux 程序设计1:深入浅出 Linux 共享内存

笔者最近在阅读Aerospike论文时,发现了Aerospike是利用了Linux共享内存机制来实现的存储索引快速重建的。这种方式比传统利用索引文件进行快速重启的方式大大提高了效率。(减少了磁盘i/o,但是缺点是耗费内存,并且服务器一旦重启之后就只能冷重启了~~)......

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Elasticsearch 核心插件Kibana 本地文件包含漏洞分析(CVE-2018-17246

不久前Elasticsearch发布了最新安全公告,ElasticsearchKibana6.4.3之前版本和5.6.13之前版本中的Console插件存在严重的本地文件包含漏洞可导致拒绝服务攻击、任意文件读取攻击、配合第三方应用反弹SHELL攻击,下文笔者对其漏洞背景、攻击原理和行为进行分......

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安装maven

1、下载maven http://maven.apache.org/download.cgi 2、解压maven tar-zxvfapache-maven-3.6.0 3、配置maven环境变量 vi/etc/profile 添加环境变量 exportMAVEN_HOME=/usr/local/apache-maven-3.6.0exportPATH=$PATH:$MAVEN_HOME/bin 编...

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How to store a command in a variable in Linux?

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Iwouldliketostoreacommandtouseatalaterperiodinavariable(nottheoutputofthecommand,butthecommanditself) Ihaveasimp......

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Retaining file permissions with Git

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: IwanttoversioncontrolmywebserverasdescribedinVersioncontrolformywebserver,bycreatingagitrepooutofmy/var/wwwdirecto......

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Automatically enter SSH password with script

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: IneedtocreateascriptthatautomaticallyinputsapasswordtoOpenSSHsshclient. Let'ssayIneedtoSSHintomyname@somehostwiththe......

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How to run script as another user without password

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Ihavescript.shthatmustberunasuser2.However,thisscriptcanonlyberununderuser1inmyapplication. Iwouldlikethefollowing......

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How to install latest version of git on CentOS 7.x

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Iusedtheusual: yuminstallgit ItdidnotinstallthelatestversionofgitonmyCentOS6.HowcanIupdatetothelatestversionof......

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What does the number in parentheses shown after Un

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Forexample:man(1),find(3),updatedb(2)?Whatdothenumbersinparentheses(Brit."brackets")mean? 回答1: It'sthesectionthatthem......

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cronjob does not execute a script that works fine

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Ihavemyphpscriptfilein/var/www/html/dbsync/index.php.Whencd/var/www/html/dbsync/andrunphpindex.phpitworksperfectly. Iwant......

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How to debug the Linux kernel with GDB and QEMU?

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: I'mnewtokerneldevelopmentandIwouldliketoknowhowtorun/debugthelinuxkernelusingQEMUandgdb.I'mactuallyreadingRobertLove......

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Command line program to create website screenshots

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: WhatisagoodcommandlinetooltocreatescreenshotsofwebsitesonLinux?Ineedtoautomaticallygeneratescreenshotsofwebsiteswithout......

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How to shutdown a Spring Boot Application in a cor

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: IntheSpringBootDocument,theysaidthat'EachSpringApplicationwillregisterashutdownhookwiththeJVMtoensurethattheApplication......

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How to use regex with find command?

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Ihavesomeimagesnamedwithgenerateduuid1string.Forexample81397018-b84a-11e0-9d2a-001b77dc0bed.jpg.Iwanttofindoutalltheseimag......

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Threads vs Processes in Linux

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: I'verecentlyheardafewpeoplesaythatinLinux,itisalmostalwaysbettertouseprocessesinsteadofthreads,sinceLinuxisveryeffic......

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Merge / convert multiple PDF files into one PDF

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: HowcouldImerge/convertmultiplePDFfilesintoonelargePDFfile? Itriedthefollowing,butthecontentofthetargetfilewasnotas......

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Allowed characters in Linux environment variable n

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: WhatcharactersareallowedinLinuxenvironmentvariablenames?Mycursorysearchofmanpagesandthewebdidonlyproduceinformationabou......

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Environment variable substitution in sed

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: IfIrunthesecommandsfromascript: #my.sh PWD=bla sed's/xxx/'$PWD'/' ... $./my.sh xxx bla itisfine. But,ifIrun: #my.sh sed's......