Question

如何使用shell脚本中的正则表达式验证给定的输入字符串是否有效十六进制值

例如：

Input var="ff:ff:fe:ff"

有:分隔符值

我想将此正则表达式用于任何输入String

var = "ff:ff:fe:ff:fe"
var = "ff:ff:fe:ff:fe:fe:ff:ff"
\b0[xX][0-9a-fA-F]+\b



#!/bin/bash -x
var="fe:fe:fe:fe"
regex="/^([0-9A-F]+:?){4}$/"
if [[ $var =~ $regex ]]; then
echo "valid"
fi

Answer 1

^([0-9A-Fa-f]{2})(:[0-9A-Fa-f]{2})*$

测试

$ if [[ "ff:af:ff:23:a2:ad" =~ ^([0-9A-Fa-f]{2})(:[0-9A-Fa-f]{2})*$ ]]; then 
   echo "match"; 
  fi 
$ match

$ if [[ "definitlynottherightformat" =~ ^([0-9A-Fa-f]{2})(:[0-9A-Fa-f]{2})*$ ]]; then 
   echo "match"; 
  fi 
$

用于验证十六进制值的Shell脚本

1 个答案: