Linux程序開發(fā)環(huán)境實驗指導(dǎo)書(實驗3-4)資料1

Linux程序開發(fā)環(huán)境實驗指導(dǎo)書中南大學(xué)軟件學(xué)院

實驗3LinuxShell程序設(shè)計1、實驗?zāi)康恼莆誏inuxshell程序運行方法掌握LinuxShell程序基本語法了解Linux環(huán)境變量編寫簡單Linuxshell程序2、實驗內(nèi)容完成簡單CD唱片管理系統(tǒng)。假設(shè)你收集了大量的理假設(shè)你收集了大量的理CD□□□□□□程序至少能夠把每張

藝術(shù)家或作曲家的名字等；

曲目信息；程序要可以以

使程序具備完整性，還需要實現(xiàn)對CD唱片，現(xiàn)在為了方便管理，需要設(shè)計和實現(xiàn)一個管CD唱片的資料保存起來，如唱片的名稱、音樂類型、然后針對某張CD唱片而言，還需要保存一些簡單的CD唱片為單位進(jìn)行搜索，而不是以曲目為單位；為了CD唱片資料的輸入、修改和刪除等功能。設(shè)計把標(biāo)題信息和曲目信息分開，用兩個文本文件分別來存儲。每張CD唱片保存如下信息：編號、標(biāo)題、曲目類型（流行、爵士等）、作曲家等。曲目只保存下面兩個信息：編號和曲名。如下表所示：表1.唱片信息唱片編號標(biāo)題曲目類型作曲家CD123CoolsaxjazzBixCD234ClassicviolinclassicBachCD345Hits99popVarious表2.曲目信息目錄編號曲目編號曲名CD1231SomejazzCD1232MorejazzCD2341SonatainDminorCD3451Dizzy各項信息用逗號來分隔。實現(xiàn)程序共包含如下函數(shù)：get_return（）get_confirm（）set_menu_choice()insert_title()insert_track()add_record_tracks()add_records()find_cd()update_cd()count_cds()remove_records()list_tracks()代碼范例：#!/bin/bash#VerysimpleexampleshellscriptformanagingaCDcollection.#Copyright(C)2010-2013CentralSouthUniversity.menu_choice=”“current_cd=”“title_file=”title.cdb”tracks_file=”tracks.cdb”temp_file=/tmp/cdb?$$trap‘rm-f$temp_file’EXITget_return(){echo-e“Pressreturn\c”readxreturn0}get_confirm(){echo-e“Areyousure?\c”whiletruedoreadxcase“$x”iny|yes|Y|Yes|YES)return0;;n|no|N|No|NO)echoecho“Cancelled”return1;;*)echo“Pleaseenteryesorno”;;esacdonesetmenuchoice()clearecho“Options：-“echoecho“a)AddnewCD”echo“f)FindCD”echo“c)CounttheCDsandtracksinthecatalog”if[“$cdcatnum”!=“口口；thenecho“l(fā))Listtrackson$cdtitle”echo“r)RemoVe$cdtitle”echo“u)Updatetrackinformationfor$cdtitle”fiecho“q)Quit”echoecho-e“Pleaseenterchoicethenpressreturn\c”readmenuchoicereturn}insert_title(){echo$*>>$title_filereturn}insert_track(){echo$*>>$tracks_filereturn}add_record_tracks(){echo“EntertrackinformationforthisCD”echo“Whennomoretracksenterq”cdtrack=1cdttitle=”“while[“$cdttitle”!=“q”口doecho-e“Track$cdtrack,tracktitle?\c”readtmpcdttitle=${tmp%%,*}if[“$tmp”!=“$cdttitle”口；thenecho“Sorry,nocommasallowed”continuefiif[-n“$cdttitle”口;thenif[“$cdttitle”！=“口”口；theninsert_track$cdcatnum,$cdtrack,$cdttitlefielsecdtrack=$((cdtrack-1))ficdtrack=$((cdtrack+1))done}add_records(){Promptfortheinitialinformationecho-e“Entercatalogname\c”readtmpcdcatnum=${tmp%%,*}echo-e“Entertitle\c”readtmpcdtitle=${tmp%%,*}echo-e“Entertype\c”readtmpcdtype=${tmp%%,*}echo-e“Enterartist/composer\c”readtmpcdac=${tmp%%,*}CheckthattheywanttoentertheinformationechoAbouttoaddnewentryecho“$cdcatnum$cdtitle$cdtype$cdac”Ifconfirmedthenappendittothetitlesfileifget_confirm;theninsert_title$cdcatnum,$cdtitle,$cdtype,$cdacadd_record_trackselseremove_recordsfireturn}find_cd(){if[“$1”=“n”];thenasklist=nelseasklist=yficdcatnum=”“echo-e“EnterastringtosearchforintheCDtitles\c”readsearchstrif[“$searchstr”=“口口；thenreturn0figrep“$searchstr”$title_file>$temp_fileset$(wc-l$temp_file)linesfound=$lcase“$linesfound”in0)echo“Sorry,nothingfound”get_returnreturn0;;;;echo“Sorry,notunique.”echo“Foundthefollowing”cat$temp_fileget_returnreturn0esacIFS=”，”readcdcatnumcdtitlecdtypecdac<$temp_fileIFS=”“if[-Z“$cdcatnum”口；thenecho“Sorry,couldnotextractcatalogfieldfrom$temp_file”get_returnreturn0fiechoechoCatalognumber:$cdcatnumechoTitle:$cdtitleechoType:$cdtypeechoArtist/Composer:$cdacechoget_returnif[“$asklist”=“y”口；thenecho-e“ViewtracksforthisCD?\c”readxif[“$x”=“y”];thenecholisttracksechofifireturn1}update_cd(){if[-Z“$cdcatnum”口；thenecho“YoumustselectaCDfirst”find_cdnfiif[-n“$cdcatnum”口；thenecho“Currenttracksare:-“l(fā)ist_tracksechoecho“Thiswillre-enterthetracksfor$cdtitle”get_confirm&&{grep-v0D${cdcatnum},0$tracks_file>$temp_filemv$temp_file$tracks_fileechoadd_record_tracks}fireturn}count_cds(){set$(wc-l$title_file)num_titles=$lset$(wc-l$tracks_file)num_tracks=$lechofound$num_titlesCDs,withatotalof$num_trackstracksget_returnreturn}remove_records(){if[-Z“$cdcatnum”口；thenechoYoumustselectaCDfirstfind_cdnfiif[-n“$cdcatnum”口；thenecho“Youareabouttodelete$cdtitle”getconfirm&&{grep-v“H${cdcatnum},”$title_file>$temp_filemv$temp_file$title_filegrep-v“H${cdcatnum},”$tracks_file>$temp_filemv$temp_file$tracks_filecdcatnum=”“echoEntryremoved}get_returnfireturn}list_tracks(){if[“$cdcatnum”=“口];thenechonoCDselectedyetreturnelsegrep0D${cdcatnum},0$tracks_file>$temp_filenum_tracks=$(wc-l$temp_file)if[“$num_tracks”=“0”];thenechonotracksfoundfor$cdtitleelse{echoecho“$cdtitle:一“echocut-f2--d,$temp_fileecho}|${PAGER:-more}fifiget_returnreturn}rm-f$temp_fileif[!-f$title_file];thentouch$title_filefiif[!-f$tracks_file];thentouch$tracks_filefi#Nowtheapplicationproperclearechoecho

echo“MiniCDmanager”sleep1quit=nWhile[“$quit”!=“y”口；doset_menu_choicecase“$menu_choice”ina)addrecords;;r)removerecords;;f)find_cdy;;u)update_cd;;c)countcds;;l)listtracks;;b)echomore$titlefileechoget_return;;quit=y;;echo“Sorry,choicenotrecognized”esacdonerm-f$temp_fileecho“Finished”eXit0#Tidyupandleave#Tidyupandleave3、實驗記錄實驗報告中提交系統(tǒng)的完整腳本；記錄實驗過程中的心得體會。實驗4Linux高級程序設(shè)計1、實驗?zāi)康?1)了解Linux操作系統(tǒng)下應(yīng)用程序開發(fā)流程(2)掌握gun工具鏈的使用(3)了解Linux高級編程技巧(例如IPC機(jī)制、系統(tǒng)調(diào)用等)2、實驗內(nèi)容(1)編寫一個簡單的C語言程序，編寫Makefile文件。了解編譯過程，并用gdb進(jìn)行調(diào)試。(2)編寫一段程序，適用系統(tǒng)調(diào)用fork()創(chuàng)建兩個新的子進(jìn)程，此程序運行使系統(tǒng)中有三個活動進(jìn)程存在。控制讓一個進(jìn)