monitortest

ThisSaturdayIamgoingtotakethethirdexamofthedrivinglicensequalificationtest.Havingpracticeddrivingontheroadunderthesupervisionofthecoachforseveraltimesthesedays,Ifeelthemostdifficultpartformeisnotknowingwellabouttherouteandthechoiceoftheproperlane.Iwatchedthemonitorvideowhichwasoflittlehelp.ThecoachtoldmethatIcanhavearealtimemonitoronthetestroadbypaying400yuanformonitoringonthethreetestroutes,whichisofgreathelpforpassingtheexam.Ithoughtthepricewasalittlebittoomuch.Afteraskingforadvicefromacoupleoffellowswhohadgotthedrivinglicense,Ifeelitnecessarytotakeareal-sitemonitortogetmorechancestopasstheexam.Sopayforit.Goodlucktome.上两篇介绍过循环用法，本篇是shell编程的第三篇，继续介绍循环并加入其它知识点。文章主要统计指定目录下排名靠前的目录。生产上文件系统超阀值是很常见的告警项，通过本文的统计脚本可以快速准确的定位超阀值文件系统下使用率较高的目录。涉及的知识点有传参执行、判断参数个数、exec重定向、for循环、du统计文件大小、sort排序、sed和gawk对结果进行处理，示例如下：[root@shell~]#moredir_space_calc.sh#!/bin/bash#writtenbyloong576#脚本运行示例：`shdir_space_calc.sh/home/opt/usr`CHECK_DIRECTORIES="$1$2$3"[$#-ne3]&&echo"ERR:参数个数不为3">&2&&exitDATE=$(date'+%Y%m%d')exec>file_space_$DATE.logecho"各目录$CHECK_DIRECTORIES下大小排名前20的目录"forDIR_CHECKin$CHECK_DIRECTORIESdo echo"" echo"目录$DIR_CHECK统计情况:"du-Sm$DIR_CHECK2>/dev/null| sort-rn| sed'{6,$D;=}'| sed'N;s/\n//'| gawk'{printf$1":""\t"$2"M""\t"$3"\n"}'doneexit[root@shell~]#shdir_space_calc.sh/home/opt/usr[root@shell~]#morefile_space_20210304.log各目录/home/opt/usr下大小排名前20的目录目录/home统计情况:1:  1M  /home/wu2:  1M  /home/test3:  1M  /home/si4:  1M  /home/san5:  1M  /home/monitor目录/opt统计情况:1:  0M  /opt/containerd/lib2:  0M  /opt/containerd/bin3:  0M  /opt/containerd4:  0M  /opt目录/usr统计情况:1:  347M /usr/bin2:  109M /usr/lib/firmware3:  102M /usr/lib/locale4:  80M  /usr/libexec/docker/cli-plugins5:  74M  /usr/lib64'CHECK_DIRECTORIES="$1$2$3$4"':#以传参方式确定目录'[$#-ne3]':#判读传参个数，不为三则报错并退出'DATE=$(date'+%Y%m%d')':#获取时间信息'exec>file_space_$DATE.log':#将输出的结果重定向至日志,使用exec可以省去echo频繁的重定向输出，即echo的所有内容会直接写入file_space_$DATE.log'forDIR_CHECKin$CHECK_DIRECTORIES':#各目录循环检查'du-Sm$DIR_CHECK2':#循环统计各目录(不包含子目录)大小并排序输出'sort-rn':#对统计结果排序'sed'{6,$D;=}'|':#取排名前5的目录'sed'N;s/\n//'':#对结果编号'gawk'{printf$1":""\t"$2"M" "\t"$3"\n"}'':#对结果进行规整，大小后面加M#shell编程##linux##CentOS#少壮不努力，老大徒伤悲。不作不死！初三英语姊妹篇诵读篇5.KillTwoBirdsWithOneStone一箭双雕(Nozuo,nodie）(OurmonitorDongyuZhouhappenedtomeetWangBowhenhewasabsentfromclassagain.Hewaswalkinginthestreet,withacigarinhismouth.She'dliketohelphim.ShemadeacalltoDiudiu.ZstandsforZhouandDstandsforDiudiu,.)F:MayIspeaktoDiudiu?D:Yes.ThisisDiudiuspeaking.Who'sthat?Z:ThisisDongyuZhou.IsawWangBohangingwhilesmoking,withlongandcolorfulhaironhishead.D:Aha.Hehasbeenawayfromschoolforafewdays.ItseemsthatMissFufeelsreallyreallyangry.Isawhershoutingtohimangrilytheotherday.Shewasworriedabouthisstudyandsafety.Heissocleverthatourteacherdoesn'twanttogiveuphelpinghim.Anywayshemanagedtohelphim.Z:Yeah.Sheisstrictwithusineverything.WangBodidn'tobeytheschoolrules.Theotherdayhehadhisearspierced.Hethinksfifteen-year-oldsshouldbeallowedtomaketheirowndecisions.Hecan'tkeephimselfawayfromtheInternet.Hespendstoomuchtimeonthecomputer...Heeventookupsmoking.Hemustpayforwhathehasdonesoonerorlater.Nozuonodie.D:Inotherwords,hecanmakehisownchoiceafterheentersthesociety.Buthereallylooksawfulwiththatbigearringandlonghaironhishead.Atpresentweshouldconcentratemoreonourstudy.What'smore,he'dbetterstopwearingthatsillyearringWeshouldspendlesstimeonourappearance,itwillgetinthewayofourstudy,orwe'llfailthetest.Thatwillleadtohisfailureofconfidence.Z:You'reright.Heseemslonely.Weshouldhelphimlearnfromthetopstudent.Butweneedtimetocomeupwithagoodidea.Idon'tthinkitisonlysomeoneelse'sduty.Tobehisgoodfriends,wemustworktogetherandhelphimout.D:Iagreewithyou.Wewillhave2daysoff.Wecandecideonhavingachatwithhim.未完见评论IsolationreferstowhatyoushoulddowhenyoususpectorconfirmthatyouhaveCOVID-19evenifyoudon'thavesymptoms.Herearethestepstotake:Monitoryoursymptoms.Ifyouhaveasymptomthatwarnsofapotentiallyseverecase,suchastroublebreathing,seekmedicalcareimmediately.Stayinaseparateroomfromotherhouseholdmembers,ifpossible.Useaseparatebathroom,ifpossible.Avoidcontactwithothermembersofthehouseholdandpets,whocanalsogetCOVID-19.Don'tsharepersonalhouseholditems,likecups,towelsandutensils.Wearamaskwhenaroundotherpeopleifable.隔离是指当你怀疑或确认你患有COVID-19时，即使你没有症状，你也应该做的事情。以下是需要采取的步骤:监控你的症状。如果你有潜在严重病例的症状，比如呼吸困难，请立即就医。如果可能的话，和其他家庭成员分开住。如果可能的话，使用单独的浴室。避免与其他家庭成员和宠物接触，他们也会感染COVID-19。不要共用私人家庭用品，如杯子、毛巾和餐具。如果可能的话，在其他人周围时戴上口罩。QuarantinereferstostayingawayfromothersafterbeingexposedtosomeonewithCOVID-19whenyoudon'tknowwhetheryou'vebeeninfectedornot.Thecurrentdefinitionofexposure:beingincontactwiththatCOVID-strickenpersonformorethanatotalof15minutesinasingledayandatadistanceof6feetorless,althoughitispossiblethatthenatureoftheomicronvariantcouldleadtochangesinthatdefinition).Youdon'thavetobarricadeyourselfinyourroomasyouwouldifyoutestpositiveforCOVIDbutyoushouldwearamaskaroundothersinyourhouseholdandstayawayfromthosehousemates,especiallyifthey'reathigherriskofgettingverysickfromCOVID-19,accordingtotheCDC.Watchforfever(100.4◦Forhigher),cough,shortnessofbreathorothersymptomsofCOVID-19.Andifyoudevelopsymptoms,immediatelyheadtotheisolationrules(seeabove).隔离指的是在不知道自己是否被感染的情况下，与COVID-19患者接触后与他人保持距离。目前接触的定义:在接触COVID-stricken人超过15分钟的距离在一天和6英尺或更少,虽然有可能ο变异可能导致变化的性质定义)。你不必街垒在你的房间你COVID测试呈阳性,但是你应该戴上面具在别人家庭,远离那些室友,特别是如果他们从COVID-19非常生病的风险,根据疾病控制和预防中心。注意发热(100.4◦F或更高)、咳嗽、呼吸短促或其他COVID-19症状。如果出现症状，请立即使用隔离规则(见上文)。此画面要是配上刘和刚的《父亲》将最为经典。“想想您的背影，我感受了坚韧；抚摸你的双手，我摸到了艰辛；不知不觉你鬓角露了白发，不声不响你眼角上添了皱纹；我的老父亲，我最疼爱的人”。听着看着，眼眶一下子就湿润了，瞬间就会泪如泉涌。网页链接