echo "The string contains a digit." else echo "The string does not contain a digit." fi Example 3: 提取正则匹配 =~操作符也可用于提取匹配项。假设有一个日期字符串,我们想提取 day 、month 和 year #!/bin/bash date="23-05-2023" regex="([0-9]{2})-
if [[ $str =~ [0-9]+ ]]; then echo "The string contains a digit." else echo "The string does not contain a digit." fi Example 3: 提取正则匹配 =~操作符也可用于提取匹配项。假设有一个日期字符串,我们想提取 day 、month 和 year #!/bin/bash date="23-05-2023" regex="([0-9]{...
搜索字符串是第一个参数，其余的是数组元素：containsElement () { local e match="$1" ...
if [[ $str =~ [0-9]+ ]]; then echo "The string contains a digit." else echo "The string does not contain a digit." fi Example 3: 提取正则匹配 =~操作符也可用于提取匹配项。假设有一个日期字符串,我们想提取 day 、month 和 year #!/bin/bash date="23-05-2023" regex="([0-9]{...
有什么方法可以轻松地将字符串转换为regex,使其与原始字符串匹配的方式与使用String.contains时相同吗?示例:要匹配的字符 浏览0提问于2018-01-10得票数 1 回答已采纳 1回答 如果输入包含特殊字符,b64_pton()是否有效?我在C代码中使用它 、 在c代码中,当传递的输入包含特殊字符时,b64_pton()就会失败...
[[ string1 =~ regex ]]上面的语法中,regex是一个正则表示式,=~是正则比较运算符。下面是一个例子。#!/bin/bash INT=-5 if [[ "$INT" =~ ^-?[0-9]+$ ]]; then echo "INT is an integer." exit 0 else echo "INT is not an integer." >&2 exit 1 fi上面代码中,先判断变量INT的字符...
str="Hello World" if [[ "$str" == *"Hello"* ]]; then echo "String contains 'Hello'" else echo "String does not contain 'Hello'" fi 这些方法可以帮助你在Bash中正确比较变量和字符串。请注意,变量在比较时需要使用双引号括起来,以避免由于特殊字符引起的错误。相关...
valint() #@ USAGE: valint INTEGER case ${1#-} in ## Leading hyphen removed to accept negative numbers *[!0-9]*) false;; ## the string contains a non-digit character *) true ;; ## the whole number, and nothing but the number esac 如果函数体用括号括起来,那么它是在子 shell ...
The regex captures URLs starting with 'http' or 'https', optionally followed by 'www', a domain name, and optionally a path or query string. Block of text: The variable 'text' contains a block of text with various URL formats. Extract and print URLs: The 'while' loop iterates over ...
- Test if a given string conforms the specified glob/regex: [[ $variable ==|=~ pattern ]] - Test if a given variable is [eq]ual/[n]ot [e]qual/[g]reater [t]han/[l]ess [t]han/[g]reater than or [e]qual/[l]ess than or [e]qual to the specified number: ...