交互脚本示例-数据备份

#!/bin/bash
read -p "Do you want to backup file or directory[file/directory]:" OPTION
read -p "what is you backup[absolute location and name]:" BACKUP
case $OPTION in
         file)
            read -p "what is your backup to dir(absolute location):" TODIR1
            read -p "what is your backup name:" NAME1
             if [ -e $TODIR1/$NAME1 ];then
              read -p "Do you want to change name[yes/no]:" CHNAME1
              case $CHNAME in
                   yes)
                     read -p "what is you change names:" CHNAMES1
                     mv $TODIR1/$NAME1 $TODIR1/$CHNAMES1
                     echo "change success"
                     cp $BACKUP $/TODIR1/$NAME
                   ;;
                   no)
                     exit 1
                   ;;
               esac
              else
               mkdir $TODIR1
               cp $BACKUP $TODIR1/$NAME1
             fi
           ;; 
           directory)
             read -p "what is your backup to dir(absolute location):" TODIR2
             read -p "what is your backup name:" NAME2
               if [ -e $TODIR2/$NAME2 ];then
                read -p "Do you want to change name[yes/no]:" CHNAME2
                case $CHNAME2 in
                    yes)
                      read -p "what is you change names:" CHNAMES2
                      mv $TODIR2/$NAME2 $TODIR2/$CHNAMES2
                      echo "change success"
                      cp -r $BACKUP $TODIR2/NAME2
                    ;;
                    no)
                    exit 2
                    ;;
                esac
               else
                mkdir $TODIR2
                cp -r $BACKUP $TODIR2/NAME2
               fi
            ;;
esac
read -p "Do you want to change time by touch[yes/no]:" TOUCH
case $TOUCH in
         yes)
             touch $BACKUP
             echo "successfuly"
         ;;
         no)
             echo "waring!next backup continue source file"
         ;;
esac