Linux下进程相关知识

ubuntu@ubuntu:~$psPIDTTYTIMECMD3309pts/10000bash3794pts/10000psubuntu@ubuntu:~$

ubuntu@ubuntu:~$ps--helpallUsage:ps[options]Basicoptions:-A,-eallprocesses-aallwithtty,exceptsessionleadersaallwithtty,includingotherusers-dallexceptsessionleaders-N,--deselectnegateselectionronlyrunningprocessesTallprocessesonthisterminalxprocesseswithoutcontrollingttysSelectionbylist:-Ccommandname-G,--Grouprealgroupidorname-g,--groupsessionoreffectivegroupname-p,p,--pidprocessid--ppidparentprocessid-q,q,--quick-pidprocessid(quickmode)-s,--sidsessionid-t,t,--ttyterminal-u,U,--usereffectiveuseridorname-U,--UserrealuseridornameTheselectionoptionstakeastheirargumenteither:acomma-separatedliste.g."-uroot,nobody"orablank-separatedliste.g."-p1234567"Outputformats:-Fextrafull-ffull-format,includingcommandlinesf,--forestasciiartprocesstree-Hshowprocesshierarchy-jjobsformatjBSDjobcontrolformat-llongformatlBSDlongformat-M,Zaddsecuritydata(forSELinux)-OpreloadedwithdefaultcolumnsOas-O,withBSDpersonality-o,o,--formatuser-definedformatssignalformatuuser-orientedformatvvirtualmemoryformatXregisterformat-ydonotshowflags,showrssvs.addr(usedwith-l)--contextdisplaysecuritycontext(forSELinux)--headersrepeatheaderlines,oneperpage--no-headersdonotprintheaderatall--cols,--columns,--widthsetscreenwidth--rows,--linessetscreenheightShowthreads:Hasiftheywereprocesses-LpossiblywithLWPandNLWPcolumns-m,mafterprocesses-TpossiblywithSPIDcolumnMiscellaneousoptions:-cshowschedulingclasswith-loptioncshowtruecommandnameeshowtheenvironmentaftercommandk,--sortspecifysortorderas:[+|-]key[,[+|-]key[,...]]LshowformatspecifiersndisplaynumericuidandwchanS,--cumulativeincludesomedeadchildprocessdata-ydonotshowflags,showrss(onlywith-l)-V,V,--versiondisplayversioninformationandexit-w,wunlimitedoutputwidth--helpdisplayhelpandexitFormoredetailsseeps(1).

psaux

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kill-912345

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sleep1000&sleep1001&sleep1002&