Linux Shell 实现的学生信息管理系统，别问我为什么这么无聊，因为课程设计需要！！！
#!/bin/bash log_in_operate(){ printf "1、输出学生信息\n" printf "2、查询学生信息(姓名)\n" printf "3、修改学生信息\n" printf "4、添加学生信息\n" printf "5、删除学生信息\n" printf "6、退出登陆\n" read sign case $sign in 1) all_info ;; 2) find_stu ;; 3) change_info ;; 4) add_info ;; 5) delect ;; 6) out_log ;; esac } main_log() { printf "1、登陆\n" printf "2、注册\n" read m if [ $m -eq 1 ] then log_users else if [ $m -eq 2 ] then register_users else printf "输入有误，重新输入\n" main_log fi fi } register_users(){ printf "输入用户名：\n" read name printf "输入密码：\n" read pass printf "再次确认密码：\n" read repass if [ $pass != $repass ] then printf "两次输入有误\n" register_users else reg="$name $pass" #写入文件 echo $reg >> "\Users\dengnici\Desktop\users.dat" printf "注册成功!\n" main_log fi } log_users(){ printf "输入账户" read account printf "输入密码" read pass File="\Users\dengnici\Desktop\users.dat" users="$account $pass" #cat $File | while read line #do #if [ "$users" = "$line" ] #then #printf "登陆成功!\n" #export sign=1 var=$(grep "$account" "$File") if [ "$users" = "$var" ] then log_in_operate else printf "用户名或密码错误\n" main_log fi } add_info(){ printf "输入学号：\n" read num #判断学号是否存在 var=$(grep "$num" "\Users\dengnici\Desktop\stu.dat") File="\Users\dengnici\Desktop\stu.dat" cat $File | while read line do if [ "$var" = "$line" ] then printf "学号存在！\n" log_in_operate break fi done printf "输入姓名：\n" read name printf "输入年龄\n" read age printf "输入性别\n" read sex if [ "$sex" != "男" -a "$sex" != "女" ] then printf "性别输入有误！" add_info fi printf "输入电话\n" read phone_num student="$num $name $age $sex $phone_num" printf "添加成功！\n" echo $student >> "\Users\dengnici\Desktop\stu.dat" log_in_operate } delect(){ printf "请输入您想删除学生的学号" read num if [ ! -f "\Users\dengnici\Desktop\stu.dat" ] then printf "文档为空，请先添加!\n" else grep "$num" "\Users\dengnici\Desktop\stu.dat"> "\Users\dengnici\Desktop\null.dat" if [ $? != 0 ] then echo "此人不存在!\n" else printf "删除成功！\n" cp "\Users\dengnici\Desktop\stu.dat" "\Users\dengnici\Desktop\stu.txt" grep -v $num "\Users\dengnici\Desktop\stu.txt" > "\Users\dengnici\Desktop\stu.dat" fi fi log_in_operate } #修改函数 change_info(){ printf "请输入名字：" read name grep "$name" "\Users\dengnici\Desktop\stu.dat"> "\Users\dengnici\Desktop\null.dat" if [ $? != 0 ] then echo "此人不存在!\n" change_info else cp "\Users\dengnici\Desktop\stu.dat" "\Users\dengnici\Desktop\stu.txt" grep -v $name "\Users\dengnici\Desktop\stu.txt" > "\Users\dengnici\Desktop\stu.dat" add_info printf "修改成功!\n" fi log_in_operate } find_stu(){ printf "请输入名字：" read name grep "$name" "\Users\dengnici\Desktop\stu.dat"> "\Users\dengnici\Desktop\null.dat" if [ $? != 0 ] then printf "此人不存在!\n" else grep "$name" "\Users\dengnici\Desktop\stu.dat" fi log_in_operate } all_info(){ cat "\Users\dengnici\Desktop\stu.dat" printf "\n" log_in_operate } out_log(){ main_log } main_log