试验报告六SHELL编程.docx

1、试验报告六SHELL编程实验六 SHELL编程实验环境:Linux操作系统实验目的：(1)掌握vi的三种工作方式，熟悉 vi编辑程序的使用。(2)学习Shell程序设计方法。掌握编程要领。实验内容：1.用Vi编写例1。练习内部变量和位置参数的用法。用chmod将文件的权限设置为可执行模式，并在提示符后键入命令行:$./prog1.或 $sh prog1.屏幕显示：Name not provided实验截图：匕tup亡L 4 wi m簞progl.hstupci sh mypcogl.stupcl. -! sh wprogihNdine not provided(stupcl T$ /niwpr

2、QgX.h Theodore bfqh; /raprog , h: Me file or fdi rectory乳喀亡.sh mypragi,h TheodoreYour name is Theodore(stupcl -$ |2.进一步修改程序 progl.h要求显示参数个数、程序名字，并逐个显示参数stupcl *s vi m/progl.h5tupcl -$ ./nyprogl.hYour shell program name 15,/YProq 1 rhstuGlpcl T$ ./myprogl.h H NO KOYour parairieter nunb-er is 3stupcl

3、-S |3修改例1程序。用read命令接受键盘输入。若没有输入显示第一种 提示，否则第二种提示。difrlay p ramread chif -2 Sh echo *rat provided echo *rour name is 枇hthenelfi4.用vi编写例2、例3练习字符串比较运 算符、数据比较运算符和文件运算符的用法，观察运行结果。例2：atririgl - TTlie First one-1string? The Second one*string 1 = strings thenecho strina丄 equaL to strLino2welse*chc 1 not o im

4、g?fli f f 五七 ri ng 1 thenecho atring丄 is not empt/elser电hui slring3 1( t-npty*fl0T | -n string?t henecho string has. a Length g re ate than zero* elseecho ring2 has a length equial to zero*(ETugpcl -$ vi coparestupc 1 *H vi coaipdre.ti(sTupci &h coipare.h stingl not equal o string?stringl is ncl eup

5、ty strings lias 启 length grete than zero例3：t -d ppdir Lhehecho Hcppdir i% directory*pchn c ppd l r 1 no t h !i rpc tor/n(十 filea IthenecM filoa b rculrels*?ecrw tllea not a regular fils*r丄t -r filea |the”echo fh住金 read pemj_iDn$el s*rcbK filca du亡、 noL fcdd pri iuikfiw filea rhpnecrw hds wilLe terni

6、丄s士丄uiif住I 5 H看uhto Hfilco not wrl七乜 pcmiiinc14fiit -x cppdir |thenech-G HcpMdu h eAemte pen rvlic!nMech Mcippdi r dl&es not have execute perwis&i of ri运行结果:cppdir 15 not a directory filea is not a regular file filea does net r-ead permissione filefl does net write pernissi口rw cppdir does not have e

7、xecute pernBsLoii5修改例2程序。使在程序运行中能随机输入字符串，然后进行字符串比较redrjugire-tdst ririgif ( the-n$ rinq. = $st rxi92 ec ho * s t rirgi_ c-qu at to st rir*g2*flecho w st ringl not cqu al to sti ing2*讦 thentstrinl.el teetho stringL is not emptyfiecho t nngl is emp ty *if f th en-o 5t ring2 el&eecho st ring? a greater

8、- th an z e rorelic * st nr*g2 hpdir Is directory elseecfw Sfllename *cppdir is not = directory11 fl:-f filenane thenecho Sfilename fi:f -r filenae thenecho sfilename d scecho 1 THenaine fi-置 filename then.echo STllenane d sctefwfi -x filename thenechfl $fil亡nameeclw Sfilename is a regular file file

9、a is not a regular fileJ-tilea has read p-erniissionsfiles dues, not r电aM prLK&ione*Jfilaa has write pcrmisstonefdlea doe not writ亡 prtni&siQiieJtppdir has execute pernissipnecho ifilename fi匚ppdir do?s nzt eie匚utP p?rmission1 stuOpcl f, vi cornpdistOci 1$ vi comparedstulpcl -13 wi compareZ.hstupcl

10、*jl ./CGHipare2.hCMparcZ.h(pmparrf.h t4. h tstuflpcl -is /texT4+icp: missing destination file operand after bd1 inBl|0?|-3|04例&假如给出月份数字作为参数编写程序 displaymonth.h旳Iecho MOnth is Jan； echo Month is Feb-1:;echo MOnth i耳 Mar; echo HDnth is Apr-； HQnxh is May； echo *MOnth is Jun；; ech FKnth n Jul;cho nonih

11、is Aug-；El 筑ho MOnth is Sep*:; ei|ie| echo M&nth is Oct ; 011|11 echo Month is 他严； ?Q 机he WOnth is Dtc-;: echo invalid;tiSdCstuwci | ul texra.h stulpcl *I texts h Invalid例9:|displavKionth () $1 in011iflecho Month is Jan?； 021曲呼ho Month is F电b*； 93echo Month is Har;: B4|4| echo Month Is Apr*; l-fecho

12、 Month Is May-;J3il 酗 aie|ie912|1296|EQ echo *Month is Jun; Etho Manth Ls Jul;: | ezho nor：h 15 Aua； echo HH9nth 込 Sep; I echo Hanth i耳 OctB; echo Ktonth is Nov;: | echo *Mqnth isPeC；-Q echo Invalid;esse displayraonth fl 叽 ayKnth 1Zs vi tuKtS-hstupcl ji texts.hMonth is AugMonth is Decsiu(?pci -1$ |9

13、.编程，在屏幕上显示用户主目录名（HOME）、命令搜索路径（PATH）,并显示由位 置参数指定的文件的类型和操作权限。stupd T$ vi text.h5tu卽cl textFhhome is /home/stuecho patn id /usr/Iocal/oin:/usr/bin:/bin:/usr/openmpi/tin:/opt/intet/compose rxebin: Zusr/local/sbin ； /u s r/s bin: /sbin: /honie/stu/binstupcl -)$ |体会：这次shell实验感觉有点难。在用 vi编程结束后运行时总是有语法错误，因为对语法不太熟悉，因此在修改方面有很大的困难。