if [[ "$string" =~ ^regex$ ]]; then echo "Matched" else echo "Did not match" fi 这里^regex$表示匹配以regex开头的字符串,并且该字符串以regex结尾。 正则表达式在Bash中通常与grep、sed、awk等工具结合使用,用于文本搜索、替换和验证等操作。 示例 通配符匹配示例: bash # 列出当前目录下所有.txt...
accordingly (as in regex(3)). The return value is 0 if the string matches the pattern, and 1 otherwise. If the regular expression is syntactically incorrect, the conditional expression’s return value is 2. If the shell option nocasematch is enabled, the match is performed without regard t...
used, the string to the right of the operator is considered an extended regular expression and matched accordingly (as in regex(3)). The return value is 0 if the string matches the pattern, and 1 otherwise. If the regular expression is syntactically incorrect, the conditional expression’s re...
if[[$str=~ 200[0-5]+ ]];thenecho"regex_matched"fi 如果你想的话,也可以用内联条件语句来替换 if 语句,如下所示: [[$str=~ 200[0-5]+ ]] &&echo"regex_matched" 一旦Bash 解释器执行了一个正则表达式匹配,它通常会将所有匹配结果存储在 BASH_REMATCH shell 变量中。这个变量是一个只读数组,并将...
regex(){# Usage:regex"string""regex"[[$1=~$2]]&&printf'%s\n'"${BASH_REMATCH[1]}"} 示例用法: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 $ # Trim leading white-space.$ regex' hello''^\s*(.*)'hello $ # Validate a hex color.$ regex"#FFFFFF"'^(#?([a-fA-F0-9]...
if[["$string"=~regex]];then# 如果字符串匹配正则表达式echo"匹配成功"else# 如果字符串不匹配正则表达式echo"匹配失败"fi 基本正则匹配 string="hello123"if[["$string"=~[0-9]+]];thenecho"字符串包含数字"elseecho"字符串不包含数字"fi 这个示例中,[0-9]+是一个正则表达式,表示“一个或多个数字”...
The output: Points: 1. if [[ $string =~ $regex ]]; then... The operator '=~' is for the regex comparation while '==' is for the value camparation. 2. just as other languages, we need backslashes to match special charators....
array=("apple" "banana" "cherry" "date") match="an" for item in "${array[@]}"; do if [[ $item =~ $match ]]; then echo "$item" fi done 这种方法使用正则表达式匹配来判断数组元素是否符合匹配字符串的模式。如果匹配成功,则打印该元素。 以上是从数组中提取匹配字符串的几种常见方法...
regex="([0-9]{2})-([0-9]{2})-([0-9]{4})" if [[ $date =~ $regex ]]; then day=${BASH_REMATCH[1]} month=${BASH_REMATCH[2]} year=${BASH_REMATCH[3]} echo "Day: $day, Month: $month, Year: $year" fi 我的开源项目 ...
使用String.matches方法判断是否包含子串,注意正则表达式元字符的转义 boolean matches(String regex) Tells whether or not this string matches the given regular expression. if (str.matches(".*"+sub+".*")) { // do something } StringUtils.contains ...