linux编程脚本(二).pdf

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1、第八章第八章#break_exam2.sh#!/bin/bash for(i=1;i=9;i+)do for(j=1;j=i;j+)do let temp=i*j if$temp-eq 7 then break fi echo-n$i*$j=$temp done echo done BREAK_E2.SH#break_exam3.sh#!/bin/bash for(i=1;i=9;i+)do for(j=1;j=i;j+)do let temp=i*j echo-n$i*$j=$temp done if$i-eq 6 then break fi echo done BREAK_E3.SH#br

2、eak_exam1.sh#!/bin/bash sum=0 for(i=1;i=100;i+)do let sum+=i if$sum-gt 1000 then echo 1+2+.+$i=$sum break fi done BREAK_EX.SH#continue_exam2.sh#!/bin/bash for(i=1;i=9;i+)do for(j=1;j=i;j+)do let temp=i*j if$temp-eq 7 then continue fi echo-n$i*$j=$temp done echo done CONTINU2.SH#continue_exam3.sh#!/b

3、in/bash for(i=1;i=9;i+)do if$i-eq 7 then continue fi for(j=1;j=i;j+)do let temp=i*j echo-n$i*$j=$temp done echo done CONTINU3.SH#continue_exam1.sh#!/bin/bash m=1 for(i=1;i 100;i+)do let temp1=i%7 if$temp1-ne 0 then continue fi echo-n$i let temp2=m%7 if$temp2-eq 0 then echo fi let m+done CONTINUE.SH#

4、for_exam6.sh#!/bin/bash for file in$(ls)do echo file:$file done FOR_EX10.SH#for_exam7#!/bin/bash for file in*do echo file:$file done FOR_EX11.SH#for_exam8.sh#!/bin/bash echo number of arguments is$#echo What you input is:for argument in$*do echo$argument done FOR_EX12.SH#for_exam9.sh#!/bin/bash echo

5、 number of arguments is$#echo What you input is:for argument do echo$argument done FOR_EX13.SH#for_exam10.sh#!/bin/bash for(integer=1;integer=5;integer+)do echo$integer done FOR_EXA2.SH#for_exam11.sh#!/bin/bash sum=0 for(i=1;i=100;i=i+2)do let sum+=i done echo sum=$sum FOR_EXA3.SH#for_exam12.sh#!/bi

6、n/bash LIMIT=5 for(a=1,b=5;a=1;i+)do echo Hello World!done FOR_EXA5.SH#for_exam2.sh#!/bin/bash for varible1 in 1.5 do echo Hello,Welcome$varible1 times done FOR_EXA6.SH#!/bin/bash sum=0 for i in 1.100.2 do let sum+=i done echo sum=$sum FOR_EXA7.SH#for_exam4#!/bin/bash sum=0 for i in$(seq 1 2 100)do

7、let sum+=i done echo sum=$sum FOR_EXA8.SH#for_exam5#!/bin/bash for day in Monday Tuesday Wednesday Thursday Friday Saturday Sunday do echo$day done FOR_EXA9.SH#for_exam1.sh#!/bin/bash for varible1 in 1 2 3 4 5 do echo Hello,Welcome$varible1 times done FOR_EXAM.SH#nested_loop_exam3.sh：#!/bin/bash for

8、(i=1;i=8;i+)do for(j=1;j=8;j+)do total=$($i+$j)tmp=$($total%2)if$tmp-eq 0;then echo-e-n 03347m else echo-e-n 03340m fi done echo done NESTED_2.SH#nested_loop_exam3.sh：#!/bin/bash i=1 while($i=9)do j=1 while($j=$i)do echo-n*let j+done let i+echo done NESTED_3.SH#neSted_loop_exam1.sh#!/bin/bash for(i=

9、1;i=9;i+)do for(j=1;j=i;j+)do let temp=i*j echo-n$i*$j=$temp done echo done NESTED_L.SH#no_break_exam.sh#!/bin/bash sum=0 for(i=1;i=100;i+)do let sum+=i done echo 1+2+.+100=$sum NO_BREAK.SH#select_exam2.sh#!/bin/bash echo What is your favourite color?select color do break done SELECT_2.SH#select_exa

10、m1.sh#!/bin/bash echo What is your favourite color?select color in red blue green white black do break done echo You have selected$color SELECT_E.SH#while_exam2.sh#!/bin/bash echo Please input the num(1-10)read num until$num=4 do if$num-lt 4 then echo Too small.Try again!read num elif$num-gt 4 then

11、echo To high.Try again read num else exit 0 fi done echo Congratulation,you are right!UNTIL_E2.SH#until_exam1.sh#!/bin/bash i=0 until$i-gt 5 do let square=i*i echo$i*$i=$square let i+done UNTIL_EX.SH#while_exam2.sh#!/bin/bash sum=0 i=1 while(i=100)do let sum+=i let i+=2 done echo sum=$sum WHILE_E2.S

12、H le_exam3.sh#!/bin/bash echo Please input the num(1-10)read num while$num!=4 do if$num-lt 4 then echo Too small.Try again!read num elif$num-gt 4 then echo To high.Try again read num else exit 0 fi done echo Congratulation,you are right!WHILE_E3.SH#while_exam4.sh#!/bin/bash echo Please input the num

13、 read num factorial=1 while$num-gt 0 do let factorial=factorial*num let num-done echo The factorial is$factorial WHILE_E4.SH#while_exam5.sh#!/bin/bash echo Please input the num:read num signal=0 while$signal!=1 do if$num-lt 4 then echo Too small.Try again!read num elif$num-gt 4 then echo To high.Try

14、 again read num else signal=1 echo Congratulation,you are right!fi done WHILE_E5.SH#while_exam6.sh#!/bin/bash echo Please input the num read num sum=0 i=1 signal=0 while$signal!=1 do if$i-eq$num then let signal=1 let sum+=i echo 1+2+.+$num=$sum else let sum=sum+i let i+fi done WHILE_E6.SH#while_exam

15、7.sh#!/bin/bash echo number of arguments is$#echo What you input is:while$*!=do echo$1 shift done WHILE_E7.SH#while_exam1.sh#!/bin/bash int=1 while($int=5)do echo$int let int+done WHILE_EX.SH 第九章第九章#!/bin/bash for n in 0 1 2 3 4 5 do echo BASH_VERSINFO$n=$BASH_VERSINFO$n done BASHVER.SH#!/bin/bash v

16、ar1=20 var2=3.14159 var3=echo scale=5;$var1 2|bc var4=echo scale=5;$var3*$var2|bc echo The area of this circle is:$var4 CALARE.SH#!/bin/bash(a=2009)echo The initial value of a is:$a(a+)echo After a+,the value of a is:$a(+a)echo After+a,the value of a is:$a(a-)echo After a-,the value of a is:$a(-a)ec

17、ho After-a,the value of a is:$a CSTYLE.SH#!/bin/bash variable1=12 variable2=5 result=$(variable1*variable2)echo result=$result DOUBLEPA.SH#!/bin/bash S01_name=Li Hao S01_dept=Computer S01_phone=025-83481010 S01_rank=5 S02_name=Zhang Ju S02_dept=English S02_phone=025-83466524 S02_rank=8 S03_name=Zhu

18、Lin S03_dept=Physics S03_phone=025-83680010 S03_rank=3 PS3=Pls.select the number of student:select stunum in S01 S02 S03 do name=$stunum_name dept=$stunum_dept phone=$stunum_phone rank=$stunum_rank echo BASIC INFORMATION OF NO.$stunum STUDENT:echo NAME:$!name echo DEPARTMENT:$!dept echo PHONE:$!phon

19、e echo RANK:$!rank break done INDIREC2.SH#!/bin/bash filename=$1 column=$2 tempvar=$!column echo$column echo$2 echo$filename awk BEGIN FS=,print NR,$tempvar$filename INDIREC3.SH#!/bin/bash variable1=variable2 variable2=Hadoop echo varialbe1=$variable1 eval tempvar=$variable1 echo tempvar=$tempvar ec

20、ho Indirect ref variable1 is:$!variable1 INDIRECT.SH#!/bin/bash echo-n What is your name?read echo Your name is$REPLY echo-n What is the name of your father?read fname echo Your fathers name is$fname echo But the$REPLY is$REPLY READREPL.SH#!/bin/bash count=1 MAX=5 while$SECONDS-le$MAX;do echo This i

21、s the$count time to sleep.let count=$count+1 sleep 2 done echo The running time of this script is$SECONDS RUNSEC.SH#!/bin/bash echo Pls.choose your profession?select var in Worker Doctor Teacher Student Other do echo The$REPLY is$REPLY.echo Your preofession is$var.break done SELECTRE.SH#!/bin/bash T

22、MOUT=3 echo What is your name?read fname if -z$fname;then fname=(no answer)fi echo Your name is$fname TIMEDREA.SH#!/bin/bash variable1=2009 variable2=$variable1+1 echo variable2=$variable2 let variable3=$variable1+1 echo variable3=$variable3 declare-i variable4 variable4=$variable1+1 echo variable4=

23、$variable4 VARTYPE.SH 第十章第十章#!/bin/bash echo The number of arguments passed to this script:$#eval echo$#echo-n The last argument is:eval echo$#EVALPOS.SH#!/bin/bash while read NAME VALUE do eval$NAME=$VALUE#$NAME=$VALUE done&1 9&2 exec&loggg ls z*date exec 1&8 2&9 8&-9&-echo-echo Close FD 8 and 9:ls

24、 z*date EXECERR.SH#!/bin/bash exec 8&0 exec hfile read a read b echo-echo$a echo$b echo Close FD 8:exec 0&8 8&1 exec loggg echo Output of date command date echo Output of df command df exec 1&8 8&-echo-echo Output of date command date echo Output of df command df EXECOUT.SH#refor.sh 脚本：for 循环的重定向#!/

25、bin/bash#将 ls/etc 的结果写到 loggg 文件中 ls/etc loggg#计算 loggg 文件的最大行数，并赋给 maxline 变量#这是与 while 和 until 循环最大的区别#灵活运用了输入重定向符号，类似用法可以参见图 10-25 的例子 maxline=$(wc-l loggg)#搜索 loggg 文件中与 rc.d 所匹配的行，输出匹配行的行数 for filename in seq$maxline#利用 seq 命令产生循环参数 do read filename#按行读取 loggg 中的数据#let count+=1#for 循环中需要有 if 语句

26、指定跳出循环的条件 if$filename=rc.d then break else let count+=1 fi done loggg echo-Normal Stdout-REIF.SH#!/bin/bash ls/etc loggg while$filename!=rc.d;do read filename let count+=1 done outputnull ls-l outputnull ANOTHERR.SH#!/bin/bash ls/etc|grep rc0-9&echo The Scirpt quits now!wait BACKLS.SH#!/bin/bash i=0

27、 while:;do if(i=10);then break fi echo$(+i)done COLON.SH#!/bin/bash#trap echo You hit CONTROL+C!INT while:;do#let count=count+1#echo This is the$count sleep sleep 5 done FOREVER.SH#!/bin/bash trap TERM SIGKILL INT while:;do#let count=count+1#echo This is the$count sleep sleep 5 done NOKILLME.SH#!/bi

28、n/bash echo Changing current work directory cd/etc echo Now in$PWD set-r echo-IN RESTRICTED MODE-echo Trying to change current work directory cd/usr/local echo Now in pwd echo echo Trying to change$SHELL SHELL=/bin/sh echo$SHELL=$SHELL echo echo Trying to redirect output to a file who outputnull ls-

29、l outputnull RESSHELL.SH#!/bin/bash kill$echo Does this line appear?SELFKILL.SH#!/bin/bash sleep 10 SLEEP10.SH#!/bin/bash sleep 30 SLEEP55.SH#!/bin/bash if(set-u;:$var)then echo Variable is set.fi SUBSCOL.SH#subsenv.sh 脚本：子 Shell 设定 bash Shell 选项#!/bin/bash (#进入子 Shell set-C#开启-C 选项，防止重定向时覆盖文件:outpu

30、tnull#试图用冒号清空 outputnull 文件)#在父 Shell 覆盖一个文件，测试子 Shell 开启的-C 选项是否对父 Shell 生效 cat subsenv.sh outputnull SUBSENV.SH#!/bin/bash echo-IN MAINSHELL-outervar=OUTER echo outervar=$outervar (echo-IN SUBSHELL-innervar=INNER echo innervar=$innervar outervar=OUTER-INNER echo outervar=$outervar export innervar

31、export outervar)echo-RETURN TO MAINSHELL-echo innervar=$innervar echo outervar=$outervar SUBSEP.SH#!/bin/bash trap QUIT trap echo You want to kill me TERM#trap echo You want to suspend this process!TERM(./forever.sh)SUBSIG.SH#!/bin/bash(grep-r root/etc/*|sort part1)&(grep-r root/usr/local/*|sort par

32、t2)&(grep-r root/lib/*|sort part3)&wait cat part1 part2 part3|sort parttotal echo Run time of this script is:$SECONDS SUBSPARA.SH#!/bin/bash echo The level of father Shell is:$BASH_SUBSHELL outervar=OUTER (echo The level of SubShell is:$BASH_SUBSHELL innervar=INNER echo innervar=$innervar echo outer

33、var=$outervar)echo The level of father Shell is:$BASH_SUBSHELL if -z$innervar then echo The$innervar is not defined in main body.else echo The$innervar is defined in main body.fi SUBSVAR.SH#!/bin/bash trap echo You hit CONTROL+C!INT while:;do let count=count+1 echo This is the$count sleep sleep 5 do

34、ne TRAPLOOP.SH 第十三章第十三章 1 Hello Everyone!Welcome to Linux Shell World!FILE.TXT Hello Everyone!FILE1.TXT Welcome to Linux Shell World!FILE2.TXT#function9.sh#!/bin/bash square()echo Please input the num:read num1 let squ=num1*num1 echo Square of$num1 is$squ.cube()echo Please input the num:read num2 le

35、t c=num2*num2*num2 echo Cube of$num2 is$c.power()echo Please input the num:read num3 echo Please input the power:read p let temp=1 for(i=1;i$p;i+)do let temp=temp*num3 done echo power$p of$num3 is$temp.choice()echo Please input the choice of operate(s for square;c for cube and p for power):read char

36、 case$char in s)square;c)cube;p)power;*)echo What you input is wrong!;esac choice FUNCITON.SH#function5.sh#!/bin/bash count()if$#-ne 3 then echo The number of arguments is not 3!fi let s=0 case$2 in +)let s=$1+$3 echo$1+$3=$s;-)let s=$1-$3 echo$1-$3=$s;*)let s=$1*$3 echo$1*$3=$s;/)let s=$1/$3 echo$1

37、/$3=$s;*)echo What you input is wrong!;esac echo Please type your word:(e.g.1+1)read a b c count$a$b$c FUNCTI10.SH#function6.sh#!/bin/bash ind_func()echo$1 parameter=ind_arg ind_arg=Hello ind_func$parameter ind_func$!parameter echo*ind_arg=World ind_func$parameter ind_func$!parameter FUNCTI11.SH#fun

38、ction7.sh#!/bin/bash show_week()echo-n What you input is:echo$1 case$1 in 0)echo Today is Sunday.return 0;1)echo Today is Monday.return 0;2)echo Today is Tuesday.return 0;3)echo Today is Wednesday.return 0;4)echo Today is Thursday.return 0;5)echo Today is Friday.return 0;6)echo Today is Saturday.ret

39、urn 0;*)return 1;esac if show_week$1 then echo What you input is right!else echo What you input is wrong!fi exit 0 FUNCTI12.SH#function9.sh#!/bin/bash show_week()for day in Monday Tuesday Wednesday Thursday Friday Saturday Sunday do echo -n$day done echo show_number()for(integer=1;integer=7;integer+

40、)do echo-n$integer done echo show_square()i=0 until$i-gt 7 do let square=i*i echo$i*$i=$square let i+done show_week show_number show_square FUNCTI13.SH#function9.sh#!/bin/bash square()echo Please input the num:read num1 let squ=num1*num1 echo Square of$num1 is$squ.cube()echo Please input the num:rea

41、d num2 let c=num2*num2*num2 echo Cube of$num2 is$c.power()echo Please input the num:read num3 echo Please input the power:read p let temp=1 for(i=1;i$3 let move=move+1 dohanoi$($1-1)$4$3$2 fi if$#-eq 1 then if$($1 1)-eq 1 then dohanoi$1 A C B echo Total moves =$move else echo The number of disk whic

42、h you input is illegal!fi fi echo Please input the num of disk:read num dohanoi$num A B C FUNCTIO6.SH#function2.sh#!/bin/bash output()for(num1=1;num1 -ROW;row-)do for(column=0;column COL;column+)do if$row-ge 0 then let t1=$column-$row let t2=$column else let t1=$column let t2=$column+$row fi filter$

43、t1$t2#done echo;echo done#45 load_alpha#print_alpha#rotate#45 MATRIX.SH#!/bin/bash MAXARGS=3 ERROR=68 test$#-eq$MAXARGS|(echo Usage:basename$0$MAXARGS arguments&false)|exit$ERROR echo Correct arguments are passed to this script.exit 0 ORLIST.SH#!/bin/bash MAXTOP=50 TOP=$MAXTOP TEMP=declare-a STACK p

44、ush()if -z$1 then return fi#echo$#for(i=1;i&2 exit 0 while getopts:ab:options do case$options in a)echo You enter-a as an option.;b)echo You enter-b as an option.;?)func ;:)echo No argument value for option$OPTARG ;esac done GETOPTS_.SH#getopts2.sh#!/bin/bash while getopts fh:optname do case$optname

45、 in f)echo Option$optname is specified ;h)echo Option$optname has value$OPTARG ;?)echo Unknown option$OPTARG ;:)echo No parameter value for option$OPTARG ;*)echo Unknown error while processing options ;esac done shift$($OPTIND-1)for options in$do if !-f$2 then echo Can not find file$options.else ech

46、o Find the file$options.fi done GETOPTS2.SH#getopt_exam2.sh#!/bin/bash boolean=no func()echo basename$0-c b args.&2 exit 0 while getopts bc:options do case$options in c)let copy1=options ;b)boolean=yes ;?)func exit 1 ;esac done shift expr$options-1 copy=0 while$copy1-gt$copy do let copy=copy+1 cp$fi

47、le$if boolean=yes then echo$fi done GETOPTS3.SH#ip_login.sh#!/bin/bash ipAddrArray=(0=192.168.158.128 1=192.168.158.129 2=192.168.158.130)ip_right_or_not()remoteIpAddr=$1 if$remoteIpAddr!=then i=0 while(i$#ipAddrArray*)do if$remoteIpAddr=$ipAddrArrayi then return 0 fi let i+done return 1 else return

48、 1 fi echo Please input the IP address.read ipAddr if ip_right_or_not$ipAddr then echo Connecting to$ipAddr.ssh web$ipAddr else echo what you input is null or wrong.fi IP_LOGIN.SH#login1.sh:#!/bin/bash flag=0;for(i=0;i 3;i+)do read username read password if test$username=user-a$password=pwd then ech

49、o login success flag=1;break;fi done if$flag-eq 0 then echo You have tried 3 times.Login fail!fi LOGIN1.SH#login2.sh#!/bin/bash flag=0;echo This script is used to username and password what you input is right or wrong.for(i=0;i 3;i+)do echo-n Please input your name:read username echo-n Please input

50、your password:read password if test$username=user-a$password=pwd then echo login success flag=1 break else echo The username or password is wrong!fi done if$flag-eq 0 then echo You have tried 3 times.Login fail!fi LOGIN2.SH#no_interaction_script1.sh#!/bin/bash echo This script will quit after 3 seco