linux - 用于检查电话号码的函数内的 Unix KornShell 脚本 bool 值

Question

我在 Unix 中写了这个脚本:

function addinfo {
  echo "Please enter your LAST Name: "
  read last
  echo "Please enter your FIRST Name: "
  read first
  echo "Please enter your PHONE number as XXX-XXX-XXXX: "
  read phone
  if [ $phone != ???-???-??? ]; then
    echo "Please only enter your as XXX-XXX-XXXX"
    read phone
  else
    echo $last + $first + $phone >> asg7phonebook
  if
}

我收到与最后一个括号相关的错误代码。

1. bool 条件可以在 Unix 函数中工作吗？
2. 如何让我的功能检查用户是否输入了 XXX-XXX-XXXX(其中“X”是他们的电话号码)作为有效号码输入？我想阻止用户输入 23435-34222 作为他们的号码或 1234567890 作为他们的号码。
3. 我的语法正确吗？

Answer 1

我发现您的方法存在一些问题，

#!/usr/bin/env ksh

addinfo() {
  echo "Please enter your LAST Name: "
  read last
  echo "Please enter your FIRST Name: "
  read first
  echo "Please enter your PHONE number as XXX-XXX-XXXX: "
  read phone
  # Using a while loop on the correct pattern check.
  while [[ "$phone" != [0-9][0-9][0-9]-[0-9][0-9][0-9]-[0-9][0-9][0-9][0-9] ]]
  do
      echo "Please enter your PHONE number as XXX-XXX-XXXX (only): "
      read phone
  done
  echo $last + $first + $phone >> asg7phonebook
}

addinfo