自己写的学习小程序----操作datafile文件

文件:	operdatafile.rar
大小:	1KB
下载:	下载

两个文件：

1，mainprog.sh

 

#datafile=$HOME/bourne/datafile

datafile=./datafile

. dbfunctions

if [ ! -f $datafile ]
then
    echo "`basename $datafile` does not exist" 1>&2
    touch ./datafile
fi
while true
do
echo "Select one: "
cat <<EOF
    [1] Add info
    [2] Delete info
    [3] Update info
    [4] View info
    [5] Exit
EOF
read choice
case $choice in
    1) addon
        ;;
    2) delete
        ;;
    3) update
        ;;
    4) list
        ;;
    5) echo Bye
        exit 0
        ;;
    *) echo Bad choice

        ;;
esac
#echo Returned from function call

done


 

2,dbfunctions

 

addon () {
    while true
    do
        echo "Adding information "
        echo "Type the full name of employee "
        read name
        echo "Type address for employee "
        read address
        echo "Type start date for employee (4/10/88 ) :"
        read startdate
        echo $name:$address:$startdate
        echo -n "Is this correct? "
        read ans
        case "$ans" in
        [Yy]*)
            echo "Adding info..."
            echo $name:$address:$startdate>>$datafile
            sort -u $datafile -o $datafile
            echo -n "Do you want to go back to the main menu? "
            read ans
            if [ $ans == Y -o $ans == y ]
            then
                return
             else
                continue
            fi
                ;;
        *)
            echo "Do you want to try again? "
            read answer
            case "$answer" in
                [Yy]*)
                    continue;;
                *)
                    exit;;
            esac
                ;;
        esac
    done
}
delete () {

    while true
    do
    echo "delete information"
    echo "type the full name of employee who will be deleted"
    read name
    echo "searching......."
    findname=`cat $datafile | grep "^$name:"`
    if [ "$findname" == "" ] ; then
     echo "not found"
      echo -e "not found\n do you want to try again?"
      read yn
      if [ $yn == Y -o $yn == y ]; then
          continue
      else
          return
      fi
    else
      echo -e "do you want delete this name?"
      read yn
      if [ $yn == Y -o $yn == y ]
      then
         sed -i "/^$name:/d" $datafile
         echo "have deleted"
         return
      else
         continue
      fi
    fi
    done
}
update () {

    while true
    do
    echo "update information"
    echo "type the full name of employee who will be updated"
    read name
    echo "searching......."
    findname=`cat $datafile | grep "^$name:"`
    if [ "$findname" == "" ] ; then
     echo "not found"
      echo -e "not found\n do you want to try again?"
      read yn
      if [ $yn == Y -o $yn == y ]; then
          continue
      else
          return
      fi
    else
      echo -e "do you want update this name?"
      read yn
      if [ $yn == Y -o $yn == y ]
      then
         echo "Type the full name of employee "
         read name_new
         echo "Type address for employee "
         read address_new
         echo "Type start date for employee (4/10/88 ) :"
         read startdate_new
         sed -i "s/^$name:.*$/$name_new:$address_new:$startdate_new/g" $datafile
         sort -u $datafile -o $datafile
         echo "have update"
         return
      else
         continue
      fi
    fi
    done
}
list () {
    while true
    do
     echo "list information"
     echo "tyoe the full name of employee who will be listed (type all to list all employee):"
     read name
     if [ $name == "all" ]; then
       echo "************************"
       cat $datafile
       echo "************************"
       return
     fi
     echo "searching......."
    findname=`cat $datafile | grep "^$name:"`
    if [ "$findname" == "" ] ; then
     echo "not found"
     return
    else
       echo "************************"
     echo $findname
       echo "************************"
       return
    fi

    done
}


文件也传一份吧，可以下载，方便一些。这样的程序我以前用c写过一个，有空我也发过来吧。