50 Most Frequently Used UNIX _ Linux Commands (With Examples)

06/09/2015 50MostFrequentlyUsedUNIX/LinuxCommands(WithExamples)

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50MostFrequentlyUsedUNIX/LinuxCommands(WithExamples)byRameshNatarajanonNovember8,2010

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Thisarticleprovidespracticalexamplesfor50mostfrequentlyusedcommandsinLinux/UNIX.

Thisisnotacomprehensivelistbyanymeans,butthisshouldgiveyouajumpstartonsomeofthecommonLinuxcommands.Bookmarkthisarticleforyourfuturereference.

DidImissanyfrequentlyusedLinuxcommands?Leaveacommentandletmeknow.

1.tarcommandexamples

Createanewtararchive.

$tarcvfarchive_name.tardirname/

Extractfromanexistingtararchive.

$tarxvfarchive_name.tar

Viewanexistingtararchive.

$tartvfarchive_name.tar



Moretarexamples:TheUltimateTarCommandTutorialwith10PracticalExamples

2.grepcommandexamples

Searchforagivenstringinafile(caseinsensitivesearch).

$grepi"the"demo_file

Printthematchedline,alongwiththe3linesafterit.

$grepA3i"example"demo_text

Searchforagivenstringinallfilesrecursively

$grepr"ramesh"*

Moregrepexamples:GetaGripontheGrep!15PracticalGrepCommandExamples

3.findcommandexamples

Findfilesusingfilename(caseinsensitvefind)

#findiname"MyCProgram.c"

Executecommandsonfilesfoundbythefindcommand

$findiname"MyCProgram.c"execmd5sum{}\;

Findallemptyfilesinhomedirectory

#find~empty

Morefindexamples:Mommy,Ifoundit!15PracticalLinuxFindCommandExamples

4.sshcommandexamples

Logintoremotehost

sshljsmithremotehost.example.com

Debugsshclient

sshvljsmithremotehost.example.com

Displaysshclientversion

$sshVOpenSSH_3.9p1,OpenSSL0.9.7aFeb192003

Moresshexamples:5BasicLinuxSSHClientCommands

5.sedcommandexamples

WhenyoucopyaDOSfiletoUnix,youcouldfind\r\nintheendofeachline.ThisexampleconvertstheDOSfileformattoUnixfileformatusingsedcommand.

$sed's/.$//'filename



Printfilecontentinreverseorder

$sedn'1!G;h;$p'thegeekstuff.txt

Addlinenumberforallnonemptylinesinafile

$sed'/./='thegeekstuff.txt|sed'N;s/\n//'

Moresedexamples:AdvancedSedSubstitutionExamples

6.awkcommandexamples

Removeduplicatelinesusingawk

$awk'!($0inarray){array[$0];print}'temp

Printalllinesfrom/etc/passwdthathasthesameuidandgid

$awkF':''$3==$4'passwd.txt

Printonlyspecificfieldfromafile.

$awk'{print$2,$5;}'employee.txt

Moreawkexamples:8PowerfulAwkBuiltinVariablesFS,OFS,RS,ORS,NR,NF,FILENAME,FNR

7.vimcommandexamples

Gotothe143rdlineoffile

$vim+143filename.txt

Gotothefirstmatchofthespecified

$vim+/searchtermfilename.txt

Openthefileinreadonlymode.

$vimR/etc/passwd

Morevimexamples:HowToRecordandPlayinVimEditor

8.diffcommandexamples

Ignorewhitespacewhilecomparing.

#diffwname_list.txtname_list_new.txt

2c2,3JohnMDoe>JasonBourne

Morediffexamples:Top4FileDifferenceToolsonUNIX/LinuxDiff,Colordiff,Wdiff,Vimdiff

9.sortcommandexamples



Sortafileinascendingorder

$sortnames.txt

Sortafileindescendingorder

$sortrnames.txt

Sortpasswdfileby3rdfield.

$sortt:k3n/etc/passwd|more

10.exportcommandexamples

Tovieworaclerelatedenvironmentvariables.

$export|grepORACLEdeclarexORACLE_BASE="/u01/app/oracle"declarexORACLE_HOME="/u01/app/oracle/product/10.2.0"declarexORACLE_SID="med"declarexORACLE_TERM="xterm"

Toexportanenvironmentvariable:

$exportORACLE_HOME=/u01/app/oracle/product/10.2.0

11.xargscommandexamples

Copyallimagestoexternalharddrive

#ls*.jpg|xargsn1icp{}/externalharddrive/directory

Searchalljpgimagesinthesystemandarchiveit.

#find/name*.jpgtypefprint|xargstarcvzfimages.tar.gz

DownloadalltheURLsmentionedintheurllist.txtfile

#caturllist.txt|xargswgetc

12.lscommandexamples

Displayfilesizeinhumanreadableformat(e.g.KB,MBetc.,)

$lslhrwr1rameshteamdev8.9MJun1215:27archlinux.txt.gz

OrderFilesBasedonLastModifiedTime(InReverseOrder)Usinglsltr

$lsltr

VisualClassificationofFilesWithSpecialCharactersUsinglsF

$lsF

Morelsexamples:UnixLSCommand:15PracticalExamples

13.pwdcommand



pwdisPrintworkingdirectory.Whatelsecanbesaidaboutthegoodoldpwdwhohasbeenprintingthecurrentdirectorynameforages.

14.cdcommandexamples

Usecdtotogglebetweenthelasttwodirectories

Useshoptscdspelltoautomaticallycorrectmistypeddirectorynamesoncd

Morecdexamples:6AwesomeLinuxcdcommandHacks

15.gzipcommandexamples

Tocreatea*.gzcompressedfile:

$gziptest.txt

Touncompressa*.gzfile:

$gzipdtest.txt.gz

Displaycompressionratioofthecompressedfileusinggzipl

$gzipl*.gzcompresseduncompressedratiouncompressed_name237099797575.8%asppatchrpms.txt

16.bzip2commandexamples

Tocreatea*.bz2compressedfile:

$bzip2test.txt

Touncompressa*.bz2file:

bzip2dtest.txt.bz2

Morebzip2examples:BZisEazy!bzip2,bzgrep,bzcmp,bzdiff,bzcat,bzless,bzmoreexamples

17.unzipcommandexamples

Toextracta*.zipcompressedfile:

$unziptest.zip

Viewthecontentsof*.zipfile(Withoutunzippingit):

$unzipljasper.zipArchive:jasper.zipLengthDateTimeName4099511309823:50METAINF/MANIFEST.MF3216908259821:07classes_1596408259821:07classes_names1054208259821:07classes_ncomp

18.shutdowncommandexamples



Shutdownthesystemandturnthepoweroffimmediately.

#shutdownhnow

Shutdownthesystemafter10minutes.

#shutdownh+10

Rebootthesystemusingshutdowncommand.

#shutdownrnow

Forcethefilesystemcheckduringreboot.

#shutdownFrnow

19.ftpcommandexamples

Bothftpandsecureftp(sftp)hassimilarcommands.Toconnecttoaremoteserveranddownloadmultiplefiles,dothefollowing.

$ftpIP/hostnameftp>mget*.html

Toviewthefilenameslocatedontheremoteserverbeforedownloading,mlsftpcommandasshownbelow.

ftp>mls*.html/ftptest/features.html/ftptest/index.html/ftptest/othertools.html/ftptest/samplereport.html/ftptest/usage.html

Moreftpexamples:FTPandSFTPBeginnersGuidewith10Examples

20.crontabcommandexamples

Viewcrontabentryforaspecificuser

#crontabujohnl

Scheduleacronjobevery10minutes.

*/10****/home/ramesh/checkdiskspace

Morecrontabexamples:LinuxCrontab:15AwesomeCronJobExamples

21.servicecommandexamples

ServicecommandisusedtorunthesystemVinitscripts.i.eInsteadofcallingthescriptslocatedinthe/etc/init.d/directorywiththeirfullpath,youcanusetheservicecommand.

Checkthestatusofaservice:

#servicesshstatus

Checkthestatusofalltheservices.



servicestatusall

Restartaservice.

#servicesshrestart

22.pscommandexamples

pscommandisusedtodisplayinformationabouttheprocessesthatarerunninginthesystem.

Whiletherearelotofargumentsthatcouldbepassedtoapscommand,followingaresomeofthecommonones.

Toviewcurrentrunningprocesses.

$psef|more

Toviewcurrentrunningprocessesinatreestructure.Hoptionstandsforprocesshierarchy.

$psefH|more

23.freecommandexamples

Thiscommandisusedtodisplaythefree,used,swapmemoryavailableinthesystem.

Typicalfreecommandoutput.Theoutputisdisplayedinbytes.

$freetotalusedfreesharedbufferscachedMem:3566408158022019861880203988902960/+buffers/cache:4732723093136Swap:400017604000176

IfyouwanttoquicklycheckhowmanyGBofRAMyoursystemhasusethegoption.boptiondisplaysinbytes,kinkilobytes,minmegabytes.

$freegtotalusedfreesharedbufferscachedMem:311000/+buffers/cache:02Swap:303

Ifyouwanttoseeatotalmemory(includingtheswap),usethetswitch,whichwilldisplayatotallineasshownbelow.

ramesh@rameshlaptop:~$freettotalusedfreesharedbufferscachedMem:3566408159214819742600204260912556/+buffers/cache:4753323091076Swap:400017604000176Total:756658415921485974436

24.topcommandexamples

topcommanddisplaysthetopprocessesinthesystem(bydefaultsortedbycpuusage).Tosorttopoutputbyanycolumn,PressO(uppercaseO),whichwilldisplayallthepossiblecolumnsthatyoucansortbyasshownbelow.

CurrentSortField:Pforwindow1:Def



Selectsortfieldviafieldletter,typeanyotherkeytoreturn

a:PID=ProcessIdv:nDRT=DirtyPagescountd:UID=UserIdy:WCHAN=SleepinginFunctione:USER=UserNamez:Flags=TaskFlags........

Todisplaysonlytheprocessesthatbelongtoaparticularuseruseuoption.Thefollowingwillshowonlythetopprocessesthatbelongstooracleuser.

$topuoracle

Moretopexamples:CanYouTopThis?15PracticalLinuxTopCommandExamples

25.dfcommandexamples

Displaysthefilesystemdiskspaceusage.Bydefaultdfkdisplaysoutputinbytes.

$dfkFilesystem1KblocksUsedAvailableUse%Mountedon/dev/sda12953040032331042479723212%//dev/sda2120367992501715966408206044%/home

dfhdisplaysoutputinhumanreadableform.i.esizewillbedisplayedinGBs.

ramesh@rameshlaptop:~$dfhFilesystemSizeUsedAvailUse%Mountedon/dev/sda129G3.1G24G12%//dev/sda2115G48G62G44%/home

UseToptiontodisplaywhattypeoffilesystem.

ramesh@rameshlaptop:~$dfTFilesystemType1KblocksUsedAvailableUse%Mountedon/dev/sda1ext42953040032331202479721612%//dev/sda2ext4120367992501715966408206044%/home

26.killcommandexamples

Usekillcommandtoterminateaprocess.Firstgettheprocessidusingpsefcommand,thenusekill9tokilltherunningLinuxprocessasshownbelow.Youcanalsousekillall,pkill,xkilltoterminateaunixprocess.

$psef|grepvimramesh72437222922:43pts/200:00:00vim

$kill97243

Morekillexamples:4WaystoKillaProcesskill,killall,pkill,xkill

27.rmcommandexamples

Getconfirmationbeforeremovingthefile.

$rmifilename.txt

Itisveryusefulwhilegivingshellmetacharactersinthefilenameargument.

Printthefilenameandgetconfirmationbeforeremovingthefile.



$rmifile*

Followingexamplerecursivelyremovesallfilesanddirectoriesundertheexampledirectory.Thisalsoremovestheexampledirectoryitself.

$rmrexample

28.cpcommandexamples

Copyfile1tofile2preservingthemode,ownershipandtimestamp.

$cppfile1file2

Copyfile1tofile2.iffile2existspromptforconfirmationbeforeoverwrittingit.

$cpifile1file2

29.mvcommandexamples

Renamefile1tofile2.iffile2existspromptforconfirmationbeforeoverwrittingit.

$mvifile1file2

Note:mvfisjusttheopposite,whichwilloverwritefile2withoutprompting.

mvvwillprintwhatishappeningduringfilerename,whichisusefulwhilespecifyingshellmetacharactersinthefilenameargument.

$mvvfile1file2

30.catcommandexamples

Youcanviewmultiplefilesatthesametime.Followingexampleprintsthecontentoffile1followedbyfile2tostdout.

$catfile1file2

Whiledisplayingthefile,followingcatncommandwillprependthelinenumbertoeachlineoftheoutput.

$catn/etc/logrotate.conf1 /var/log/btmp{2 missingok3 monthly4 create0660rootutmp5 rotate16 }

31.mountcommandexamples

Tomountafilesystem,youshouldfirstcreateadirectoryandmountitasshownbelow.

#mkdir/u01

#mount/dev/sdb1/u01

Youcanalsoaddthistothefstabforautomaticmounting.i.eAnytimesystemisrestarted,thefilesystemwillbemounted.



/dev/sdb1/u01ext2defaults02

32.chmodcommandexamples

chmodcommandisusedtochangethepermissionsforafileordirectory.

Givefullaccesstouserandgroup(i.eread,writeandexecute)onaspecificfile.

$chmodug+rwxfile.txt

Revokeallaccessforthegroup(i.eread,writeandexecute)onaspecificfile.

$chmodgrwxfile.txt

Applythefilepermissionsrecursivelytoallthefilesinthesubdirectories.

$chmodRug+rwxfile.txt

Morechmodexamples:7ChmodCommandExamplesforBeginners

33.chowncommandexamples

chowncommandisusedtochangetheownerandgroupofafile.\

Tochangeownertooracleandgrouptodbonafile.i.eChangebothownerandgroupatthesametime.

$chownoracle:dbadbora.sh

UseRtochangetheownershiprecursively.

$chownRoracle:dba/home/oracle

34.passwdcommandexamples

Changeyourpasswordfromcommandlineusingpasswd.Thiswillpromptfortheoldpasswordfollowedbythenewpassword.

$passwd

Superusercanusepasswdcommandtoresetotherspassword.Thiswillnotpromptforcurrentpasswordoftheuser.

#passwdUSERNAME

Removepasswordforaspecificuser.Rootusercandisablepasswordforaspecificuser.Oncethepasswordisdisabled,theusercanloginwithoutenteringthepassword.

#passwddUSERNAME

35.mkdircommandexamples

Followingexamplecreatesadirectorycalledtempunderyourhomedirectory.

$mkdir~/temp

Createnesteddirectoriesusingonemkdircommand.Ifanyofthesedirectoriesexistalready,itwillnot



displayanyerror.Ifanyofthesedirectoriesdoesntexist,itwillcreatethem.

$mkdirpdir1/dir2/dir3/dir4/

36.ifconfigcommandexamples

UseifconfigcommandtovieworconfigureanetworkinterfaceontheLinuxsystem.

Viewalltheinterfacesalongwithstatus.

$ifconfiga

Startorstopaspecificinterfaceusingupanddowncommandasshownbelow.

$ifconfigeth0up

$ifconfigeth0down

Moreifconfigexamples:Ifconfig:7ExamplesToConfigureNetworkInterface

37.unamecommandexamples

UnamecommanddisplaysimportantinformationaboutthesystemsuchasKernelname,Hostname,Kernelreleasenumber,Processortype,etc.,

SampleunameoutputfromaUbuntulaptopisshownbelow.

$unameaLinuxjohnlaptop2.6.3224generic#41UbuntuSMPThuAug1901:12:52UTC2010i686GNU/Linux

38.whereiscommandexamples

WhenyouwanttofindoutwhereaspecificUnixcommandexists(forexample,wheredoeslscommandexists?),youcanexecutethefollowingcommand.

$whereislsls:/bin/ls/usr/share/man/man1/ls.1.gz/usr/share/man/man1p/ls.1p.gz

Whenyouwanttosearchanexecutablefromapathotherthanthewhereisdefaultpath,youcanuseBoptionandgivepathasargumenttoit.Thissearchesfortheexecutablelsmkinthe/tmpdirectory,anddisplaysit,ifitisavailable.

$whereisuB/tmpflsmklsmk:/tmp/lsmk

39.whatiscommandexamples

Whatiscommanddisplaysasinglelinedescriptionaboutacommand.

$whatislsls (1)listdirectorycontents

$whatisifconfigifconfig(8)configureanetworkinterface

40.locatecommandexamples



Usinglocatecommandyoucanquicklysearchforthelocationofaspecificfile(orgroupoffiles).Locatecommandusesthedatabasecreatedbyupdatedb.

Theexamplebelowshowsallfilesinthesystemthatcontainsthewordcrontabinit.

$locatecrontab/etc/anacrontab/etc/crontab/usr/bin/crontab/usr/share/doc/cron/examples/crontab2english.pl.gz/usr/share/man/man1/crontab.1.gz/usr/share/man/man5/anacrontab.5.gz/usr/share/man/man5/crontab.5.gz/usr/share/vim/vim72/syntax/crontab.vim

41.mancommandexamples

Displaythemanpageofaspecificcommand.

$mancrontab

Whenamanpageforacommandislocatedundermorethanonesection,youcanviewthemanpageforthatcommandfromaspecificsectionasshownbelow.

$manSECTIONNUMBERcommandname

Following8sectionsareavailableinthemanpage.

1. Generalcommands2. Systemcalls3. Clibraryfunctions4. Specialfiles(usuallydevices,thosefoundin/dev)anddrivers5. Fileformatsandconventions6. Gamesandscreensavers7. Miscellaneous8. Systemadministrationcommandsanddaemons

Forexample,whenyoudowhatiscrontab,youllnoticethatcrontabhastwomanpages(section1andsection5).Toviewsection5ofcrontabmanpage,dothefollowing.

$whatiscrontabcrontab(1)maintaincrontabfilesforindividualusers(V3)crontab(5)tablesfordrivingcron

$man5crontab

42.tailcommandexamples

Printthelast10linesofafilebydefault.

$tailfilename.txt

PrintNnumberoflinesfromthefilenamedfilename.txt

$tailnNfilename.txt

Viewthecontentofthefileinrealtimeusingtailf.Thisisusefultoviewthelogfiles,thatkeepsgrowing.ThecommandcanbeterminatedusingCTRLC.



$tailflogfile

Moretailexamples:3MethodsToViewtailfoutputofMultipleLogFilesinOneTerminal

43.lesscommandexamples

lessisveryefficientwhileviewinghugelogfiles,asitdoesntneedtoloadthefullfilewhileopening.

$lesshugelogfile.log

Oneyouopenafileusinglesscommand,followingtwokeysareveryhelpful.

CTRL+FforwardonewindowCTRL+Bbackwardonewindow

Morelessexamples:UnixLessCommand:10TipsforEffectiveNavigation

44.sucommandexamples

Switchtoadifferentuseraccountusingsucommand.Superusercanswitchtoanyotheruserwithoutenteringtheirpassword.

$suUSERNAME

Executeasinglecommandfromadifferentaccountname.Inthefollowingexample,johncanexecutethelscommandasrajusername.Oncethecommandisexecuted,itwillcomebacktojohnsaccount.

[john@devserver]$surajc'ls'

[john@devserver]$

Logintoaspecifieduseraccount,andexecutethespecifiedshellinsteadofthedefaultshell.

$sus'SHELLNAME'USERNAME

45.mysqlcommandexamples

mysqlisprobablythemostwidelyusedopensourcedatabaseonLinux.Evenifyoudontrunamysqldatabaseonyourserver,youmightendupusingthemysqlcommand(client)toconnecttoamysqldatabaserunningontheremoteserver.

Toconnecttoaremotemysqldatabase.Thiswillpromptforapassword.

$mysqlurootph192.168.1.2

Toconnecttoalocalmysqldatabase.

$mysqlurootp

Ifyouwanttospecifythemysqlrootpasswordinthecommandlineitself,enteritimmediatelyafterp(withoutanyspace).

46.yumcommandexamples

Toinstallapacheusingyum.

$yuminstallhttpd



Toupgradeapacheusingyum.

$yumupdatehttpd

Touninstall/removeapacheusingyum.

$yumremovehttpd

47.rpmcommandexamples

Toinstallapacheusingrpm.

#rpmivhhttpd2.2.322.0.1.el5.i386.rpm

Toupgradeapacheusingrpm.

#rpmuvhhttpd2.2.322.0.1.el5.i386.rpm

Touninstall/removeapacheusingrpm.

#rpmevhttpd

Morerpmexamples:RPMCommand:15ExamplestoInstall,Uninstall,Upgrade,QueryRPMPackages

48.pingcommandexamples

Pingaremotehostbysendingonly5packets.

$pingc5gmail.com

Morepingexamples:PingTutorial:15EffectivePingCommandExamples

49.datecommandexamples

Setthesystemdate:

#dates"01/31/201023:59:53"

Onceyouvechangedthesystemdate,youshouldsyncronizethehardwareclockwiththesystemdateasshownbelow.

#hwclocksystohc

#hwclocksystohcutc

50.wgetcommandexamples

Thequickandeffectivemethodtodownloadsoftware,music,videofrominternetisusingwgetcommand.

$wgethttp://prdownloads.sourceforge.net/sourceforge/nagios/nagios3.2.1.tar.gz

Downloadandstoreitwithadifferentname.

$wgetOtaglist.ziphttp://www.vim.org/scripts/download_script.php?src_id=7701



333 Tweet 391 573Like

Morewgetexamples:TheUltimateWgetDownloadGuideWith15AwesomeExamples

DidImissanyfrequentlyusedLinuxcommands?Leaveacommentandletmeknow.

>Addyourcomment

Ifyouenjoyedthisarticle,youmightalsolike..

1. 50LinuxSysadminTutorials2. 50MostFrequentlyUsedLinuxCommands

(WithExamples)3. Top25BestLinuxPerformanceMonitoring

andDebuggingTools4. Mommy,Ifoundit!15PracticalLinuxFind

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AwkIntroduction7AwkPrintExamplesAdvancedSedSubstitutionExamples8EssentialVimEditorNavigationFundamentals25MostFrequentlyUsedLinuxIPTablesRulesExamplesTurbochargePuTTYwith12PowerfulAddOns

{226commentsaddone}

PreviousComments

maheshAugust6,2014,8:04am

thanksalot.

LinkadomblessingAugust20,2014,7:52am

thanksforthis.itsreallyhelpful

LinkdevrajbharSeptember10,2014,9:47pm

iwanttoknowallsimplecommandoftheunix

LinkJohnSeptember13,2014,11:25am

MaybeitwouldbeinterestingtodifferbetweenusingLinux/Unixasanadminorasanon



admin,sincesomecommandsareuselessforanonadmin

IpersonallymissVIinthislistSHUTDOWNmaybereplacedbyINITLSisalsoaninterestingone,andWHICHdefinatelyisThenagain,basicisthisoneaswell:ECHO

LinkchandruSeptember18,2014,11:56am

Hi,Iamusingtoshibasatellitelaptop.Afterinstallingredhatlinux6inmylaptopethernetnotdetected.KindlyhelpMyhardareinformation:Processor:intelpentiumcpuB9602.20GHZ2100.00mhzEhternet:03:00.0ehternetcontrolleratheroscommunicationsincdevice10a0(rev10).

LinkNicholasLeeFaganSeptember20,2014,2:26pm

51.)Rsync

LinkdhirenOctober7,2014,3:11am

Multiplefilesisthereintape.iamnocheckendofthedisk.howtodumpallfilesintape..anyscript

LinkmrutyunjayOctober9,2014,12:31am

Ididntgotawkcommand.Itriedbutitcantworkproperly.

LinkJimO'ReillyOctober22,2014,7:03am

wc

LinknnsenseNovember27,2014,8:28am

pwdisPrintworkingdirectory.Whatelsecanbesaidaboutthegoodoldpwdwhohasbeenprintingthecurrentdirectorynameforages.CanbesaidthatpwdPshowstherealpathifyoucdintoalink..

Example$cd/home/user$lns./Public./Pub$cdPub$pwd/home/user/Pub$pwdP/home/nnsense/Public



useful,isntit??

LinkkrupaliDecember7,2014,12:27am

Writeashellscripttodisplayalllinesofafilefrombottomtotop.

Canyouhelpmewiththis??

LinkTimChaseDecember8,2014,10:43pm

Krupali,Youcanusethefairlystandardtacutility(inDebianscoreutilspackage).Thereareplentyofotherwaystodoit,butthatsthemoststraightforward.

LinkSanthoshKDecember26,2014,3:58am

Krupali,Haveyoubeenabletoscripttodisplayalllinesofafilefrombottomtotop?Itriedwithnoluck..

LinkSanthoshKDecember26,2014,8:23am

Krupali,

Youmaytrythis:

#!/bin/sh

cpfile.txttemp.txtn=`catfile.txt|wcl`

while[$nge0]dotail1temp.txt>>result.txtsedi$dtemp.txtn=`expr$n1`donermftemp.txtcatresult.txt

LinkPreetiShrivastavaDecember29,2014,5:31am

ducommandisalsousedforcheckingdiskspaceusage.

LinkEirikB.January3,2015,10:24pm

Hereisasafealternativeto$seds/.$//filename,whichwillonlyremove\r\nattheendoflines(as.matches*any*character.):

$perlpes/\r\n$/\n/gfilename



Replacesallinstancesof\r\nwith\n

LinkshilpaJanuary30,2015,4:38am

thanksalot

LinkCharlesBeatonFebruary2,2015,7:31am

Howaboutcpio?Particularlythefind./|cpiocomboie:

find./mountdepthprint|cpiopdm/destination_dir

C

LinkDGFebruary25,2015,4:01pm

Thanks..NiceTutorial.

LinkvietvuFebruary27,2015,2:25am

Thelistisfine,however,Ithinkthatmanshouldbeontop.Youknowwhy

LinkmadhuApril11,2015,12:01am

goodstuff

LinkkiranApril22,2015,8:08pm

Iwantascriptwhereineedtotakethelistoffilesofparticulardateandputtheminarchieve(anyfromarchieve1to8)

LinkAnonymousApril29,2015,12:20am

Thanksforinfo!!!

LinkAnonymousMay13,2015,2:52am

thanks

LinkAnonymousMay27,2015,7:16am

UsefullCollection:)

LinkYutiJuly24,2015,3:46am

THANKYOU!



Link

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50 Most Frequently Used UNIX _ Linux Commands (With Examples)