在脚步lookup中，询问用户是否要往文件datafile添加一条记录

答：

  1 #!/bin/bash

  2 #

  3 #######################################

  4 # Script name: lookup.bash

  5 # Actor:         Hua Jielong

  6 # Date:  2012-06-20

  7 # Script purpose:  do for test

  8 #######################################

  9 #

 10 if (( $# != 1 ))

 11 then

 12    echo "Usage:./lookup.bash $1" >&2

 13    exit

 14 fi

 15

 16 if [ ! -e $1 ]

 17 then

 18    touch $1

 19    chmod +rw $1

 20 fi

 21

 22 if [ ! -w $1 ]

 23 then

 24   chmod +rw $1

 25 fi

 26

 27 if [ ! -s $1 ]

 28 then

 29    echo "-----$1 is a empty file-----" >&2

 30 fi

 31

 32 echo "Do you need add new record to $1, yes or no?"

 33 read answer

 34

 35 if [[ $answer = "yes" || $answer = "y" ]]

 36 then

 37    echo "Please input name tel addr birthday salary!"

 38

 39    echo  -n "input name>"

 40    read name

 41

 42    echo -n "input tel>"

 43    read tel

 44

 46    echo -n "input addr>"

 47    read addr

 48

 49    echo -n "input birthday>"

 50    read birthday

 51

 52    echo -n "input salary>"

 53    read salary

 54

 55    echo "$name:$tel:$addr:$birthday:$salary">>$1

 56

 57    cat $1|while read line

 58    do

 59         echo "$line"

 60    done|sort -n>>tmp$$

 61    mv $1 $1.bak

 62    mv tmp$$ $1

 63    chmod 777 $1

 64

 65    record=`grep -n -w $name:$tel $1`

 66    echo "$record"  

 67 fi