LinuxShell脚本编程实例

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1、#!/bin/shecho"Currentcommandis$0"echo"Thefirstparameteris$1"echo"Thesecondparameteris$2"echo"Thethirdparameteris$3"echo"Totalofparametersif$#"echo"CurrentPIDis$$"#!/bin/bashtimes=0until["$times"=3];do  echo"Ilovelinux."  sleep2  times=`expr$times+1`done  #!/bin/bash#menushellscript.    samli    200

2、4.4.19until     echo"ListDirectory..........1"     echo"ChangeDirectory........2"     echo"EditFile...............3"     echo"RemoveFile.............4"     echo"ExitMenu...............5"     readchoice     test$choice=5do     case$choicein           1)ls;;           2)echo"entertargetdirectory:"   

3、        readdir           cd$dir           ;;           3)echo"enterfilename:"           readfile           vi$file           ;;           4)echo"enterfilename:"           readfile           rm$file           ;;           5)echo"Goodbye"          ;;           *)echo"illegaloption,pleaseinputagain."

4、     esac done #!/bin/shvar1="abcd  efg"echo$var1var2=1234echo"Thevalueofvar2is$var2"echo  $HOMEecho  $PATHecho  $PWD#!/bin/shnum=0while[$num-le10]do  num=`expr$num+1`    if[$num-eq5]    then          continue      fi  square=`expr$num*$num`  echo$squaredone#!/bin/bash #Gnubashversions2.x#TheParty

5、Program--Invitationstofriendsfromthe #"guest"file guestfile=./guests  #  ~/shell/guestsif[[!-e"$guestfile"]] then    printf"${guestfile##*/}non-existent"    exit1fiexportPLACE="Sarotini's"((Time=$(date+%H)+1))setcheesecrackersshrimpdrinks"hotdogs"sandwiches forpersonin$(cat$guestfile) do    if  [[$

6、person=root]]    then          continue    else           #Startofheredocument          mail-v-s"Party"$person           Hi${person}!Pleasejoinmeat$PLACEforaparty!           Meetmeat$Timeo'clock.          I'llbringtheicecream.Wouldyoupleasebring$1           andanythingelseyouwouldliketoeat?Letmekno

7、w           ifyoucan'tmakeit.              Hopetoseeyousoon.                  Yourpal,                  ellie@$(hostname)          FINIS          shift           if(($#==  0))           then              se