- #!/bin/bash
- #author:zhanghongjun
- #version:1.0
- #date:2011年 12月 14日 星期三 21:18:18 CST
- function information
- {
- echo "---------------------------"
- echo "国家图书馆管理系统(5.4版本)"
- echo
- echo -n "| " ;echo "1:添加图书"
- echo -n "| " ;echo "2:删除图书"
- echo -n "| " ;echo "3:图书列表"
- echo -n "| " ;echo "4:查找图书"
- echo -n "| " ;echo "5|q:退出系统"
- echo
- echo "---------------------------"
- read -p "请输入你的选择:" a
- case "$a" in
- 1)
- add ;;
- 2)
- delete ;;
- 3)
- list ;;
- 4)
- search;;
- 5|q|Q)
- return -1 ;;
- *)
- information ;;
- esac
- }
- function file_exist
- {
- if [ ! -f .book.txt ];then
- touch .book.txt
- fi
- }
- function add
- {
- read -p "请输入图书的编号:" number
- read -p "请输入图书的书名:" book_name
- read -p "请输入图书的作者:" author
- read -p "请输入图书的价格:" price
- echo -e "$number\\t$book_name\\t$author\\t$price" >>.book.txt && {
- echo "添加图书成功!"
- echo "-------------------"
- }
- if [ $? -ne 0 ];then
- echo "添加图书失败"
- fi
- information
- }
- function delete
- {
- read -p "请输入要删除的图书的编号:" number
- grep $number .book.txt &>/dev/null && {
- sed -i '/\\<'$number'\\>/d' .book.txt &>/dev/null &&
- echo "删除图书成功"
- echo "-------------------------"
- }
- if [ $? -ne 0 ];then
- echo "删除图书失败"
- echo "你要删除的图书不存在"
- fi
- information
- }
- #列出所有图书的信息
- function list
- {
- echo -e "编号\\t书名\\t作者\\t价格"
- cat .book.txt
- echo "----------------------------"
- information
- }
- #下面的函数用到的查询菜单
- function search_menu
- {
- echo;echo "----------------------------"
- echo -n "|";echo -e "1:\\t按图书编号查询"
- echo -n "|";echo -e "2:\\t按图书书名查询"
- echo -n "|";echo -e "3:\\t按图书作者查询"
- echo -n "|";echo -e "4:\\t按图书价格查询"
- echo -n "|";echo -e "5|q:\\t退出查询系统"
- echo;echo "----------------------------"
- }
- function search
- {
- search_menu
- read -p "请输出你的选择:" myselect
- case "$myselect" in
- 1)
- read -p "请输入要查询的图书的编号:" mynumber
- echo -e "编号\\t书名\\t作者\\t价格\\n"
- awk '$1=='$mynumber'{print $0}' .book.txt 2>/dev/null
- if [ $? -ne 0 ];then
- echo "图书不存在"
- fi
- search
- ;;
- 2)
- read -p "请输入你要查询的书名:" mybook_name
- echo -e "编号\\t书名\\t作者\\t价格\\n"
- awk '$2~/'$mybook_name'/{print $0}' .book.txt 2>/dev/null
- if [ $? -ne 0 ];then
- echo "图书不存在"
- fi
- search
- ;;
- 3)
- read -p "请输入图书的作者:" myauthor
- echo -e "编号\\t书名\\t作者\\t价格\\n"
- awk '$3~/'$myauthor'/{;print $0}' .book.txt 2>/dev/null
- if [ $? -ne 0 ];then
- echo "图书不存在"
- fi
- search
- ;;
- 4)
- read -p "请输入图书的价格:" myprice
- echo -e "编号\\t书名\\t作者\\t价格\\n"
- awk '$4=='$myprice'{print $0}' .book.txt 2>/dev/null
- if [ $? -ne 0 ];then
- echo "图书不存在"
- fi
- search
- ;;
- 5)
- information
- ;;
- *)
- information
- ;;
- esac
- }
- information
- #该片段来自于http://www.codesnippet.cn/detail/100520133281.html
来源: http://www.codesnippet.cn/detail/100520133281.html