#!/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
"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