shell编程实现学生成绩管理系统

 #!/bin/bash #colour 函数 colour () { #格式为背景：前景m，主要实现屏幕颜色显示 case $1 in black_white ) #背景为黑色，前景为白色 echo -e "\033[40;37m" ;; black_green ) #背景为黑色，前景为绿色 echo -e "\033[40;32m" ;; black_cyan ) #背景为黑色，前景为青色 echo -e "\033[40;36m" ;; red_yellow ) #背景为红色，前景为黄色 echo -e "\033[41;33m" ;; yellow_blue ) #背景为黄色，前景为蓝色 echo -e "\033[43;34m" ;; esac } #查询函数 search() { colour black_white clear echo -e "Please Enter Name >>>\c" read NAME # 如果无记录时 if [ ! -f ./record ]; then echo "You mush have some scores before you can search !" sleep 2 clear return fi # 没有输入名字查询时候 if [ -z "$NAME" ]; then echo "You didn't enter a name!" echo -e "Please Enter Name >>>\c" fi echo "你查询的信息是： $NAME" grep "$NAME" ./record 2> /dev/null case "$?" in 1 ) echo "Name not in record." ;; 2 ) echo "You didn't enter a name to search." sleep 2 search # 继续查询 ;; esac } #增加记录函数 add() { clear echo "Enter name and score of a record." echo -e "\c" if [ ! -f ./record ]; then touch record fi read NEWNAME echo "$NEWNAME" >> ./record # 排序后写回文件 sort -o ./record ./record echo "添加成功" sleep 2 } #删除记录函数 delete() { clear echo -e "Please Enter Name >>> " read NAME if [ ! -f ./record ]; then echo "记录为空请先添加！" else cp record record.bak grep "$NAME" ./record.bak > /dev/null if [ $? != 0 ]; then echo "此人不存在" else # -v 表示 not grep -v "$NAME" ./record.bak > record echo "删除成功" fi rm -f record.bak fi sleep 1 } #显示所有记录 display() { colour black_white more ./record } #利用vim编辑器编译 edit() { vim ./record } #屏幕帮助函数 help() { clear colour black_cyan echo "This is a student's record program by!" } #退出程序 quit() { clear colour black_white exit } clear while : do colour red_yellow echo "***********************************************************" echo "*     STUDENT'S RECORD MENU     *" echo "***********************************************************" colour yellow_blue echo "###########################################################" echo "#      1. 查找       #" echo "#      2. 添加       #" echo "#      3. 删除       #" echo "#      4. 显示全部      #" echo "#      5. 编辑记录      #" echo "#      H: Help Screen     #" echo "#      Q: Exit Program     #" echo "###########################################################" colour black_green echo -e -n " Please Enter Your Choice [1, 2, 3, 4, 5, H, Q]:\c" read choice case $choice in 1 ) search ;; 2 ) add; clear ;; 3 ) delete; clear ;; 4 ) display ;; 5 ) edit; clear ;; H | h ) help ;; Q | q ) quit ;; * ) echo "Invalid Choice !" sleep 2 clear ;; esac done