linux随堂笔记日志类型系统备份

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1、linux随堂笔记日志类型系统备份Record:ThefilepathlogsthelogtothespecifiedfileThe-@host/@hostIPlogsthelogtothespecifiedlogserver一theusernamesendsthelogtothespecifieduserinthemailform一*immediatelynotifythecurrentloggedinuserExample:Mai1.*/var/log/maillog(4)commonlyusedlogfiles-/var/log/messagesrecordsmostoftheev

2、entsThe-/var/log/dmesgrecordsthehardwaredetectioninformationofthekernel-/var/log/boot・Logrecordsystemservicestartupinformation-/var/log/maillogrecordstheloginfonnationforthemailsystem-/var/log/cronrecordscronandatserviceloginfonnation一/var/log/securerecordsuserauthenticationinfonnation-/var/log/W

3、TMPrecordscurrentuserlogininformation-/var/log/lastlogrecordstheuser'slastlogininformation3.Thelogrotate(1)whatislogrotateLogrotateisaloggingsoftwarethatcutslogfilesbycycleorbyfilesize(2)theinstallationoflogrotate#RPM-ivhlogrotate(3)theconfigurelogrotate-/var/logre.conflogrotatemainconfigurationf

4、ileThe-/var/logtor・ddirectoryholdsthelogrotatesubconfigurationfile-logrotateisacommonconfigurationoptionA.thedaily/weekly/orSettheperiodofthecutB.therotateNumbersSetthenumberofretainedtimesA.createauthorityusernameusergroupSetuptheautomaticcreationofemptyfilesB.compressCompresstheretainedlogfiles

5、C.nocompressUncompressedretainedlogfilesD.missingokIfthelogfileislost,noerrorE.ifemptyIfthelogfileisempty,cutF.notifemptyIfthelogfileisempty,itisnotcutG.postrotatesharedscriptsendscriptsPerformthespecifiedoperationbeforeloggingA.prerotatesharedscripts•••endscriptsPerformthespecifiedoperationafter

6、loggingB.Sizek/MSpecifythesizeofthelogThree・SystembackupTarbackupandrestore(1)thetarbackupFormat:thecontentsofthetar-cvf/-czvf/-cjvfbackuppathbackupExample:#tar-czvf/bak/etcbak(2)thetarrecoveryFormat:tar-xvf/-xzvf/-xjvfbackupfile[-cpath]Example:#tar-xvf/bak/etcbakRemotebackuptools(1)theSCP(2)ther

7、syncThekernelisrelatedtodevicemanagement(1)lsmodAction:lookatthemodulethatthekernelloadsExample:#lsmod(2)themodprobeAction:loadthespecifiedmoduleandresolvethedependenciesautomaticallyExample:#modprobepcnet32(3)thennmod