Question

function change {
  echo "Please enter the LAST name of the person: "
  read changelast
  echo "Please enter the FIRST name of the person: "
  read changefirst
  echo "Please enter the NEW phone number as XXX-XXX-XXXX: "
  read changephone
    while [[ "$changephone" != [0-9][0-9][0-9]-[0-9][0-9][0-9]-[0-9][0-9][0-9][0-
9] ]]
    do
   echo "Enter ONLY enter the phone number as XXX-XXX-XXX"
   read changephone
   done

}

我如何使用sed / egrep命令按顺序检查文件的名字和姓，然后只更改phonenumber？

Answer 1

从shell变量设置awk变量，然后将它们与awk脚本中的列进行比较。

awk -v first="$changefirst" -v last="$changelast" -v phone="$changephone" \
    '$1 == first && $2 == last { $3 = phone }
     { print }' asg7phonebook > asg7phonebook.new
if cmp -s asg7phonebook.new asgphonebook
then echo "SORRY PERSON NOT FOUND...\n"
     rm asg7phonebook.new
else mv asg7phonebook.new asg7phonebook
fi

Answer 2

将变量中的旧电话号码设为

OLD_NO=`cat phonebook | grep $changelast | grep $changefirst | awk '{print $3}'`
 then replace old with new no. as
sed -i 's/$OLD_NO/$changephone/' phonebook

注意：这将替换所有匹配号码，但由于您正在处理电话号码，因此每个人都有唯一的电话号码。

Unix脚本查找特定变量并将第三个条目更改为新变量

2 个答案: