bash if regex
Some regex libraries (possible the Java one you use) have methods that specifically test the regex against the whole input string. But in bash ...,If portability is not a concern, I recommend using [[ instead of [ or test as it is ... to Aquarius Power in the comment above, We need to store the regex on a var. ,That is, you can define a regex in bash matching the format you want. .... A good way to test if a string is a correct date is to use the command date: if date -d ... , [[ $string = $pattern ]] doesn't perform regex matching; instead, it's a glob-style pattern match. While . means "any character" in regex, it matches ..., There are a couple of important things to know about bash's ... So if you write: [[ $x =~ [$0-9a-zA-Z] ]] , the $0 inside the regex on the right will be ..., You need to remove the quoting in the regex match. if [[ $str} =~ m-.m ]]; then. From the bash man page: [...] An additional binary operator, =~, is ...,When using a glob pattern, a question mark represents a single character and an asterisk represents a sequence of zero or more characters: if [[ $gg ...
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 bash if regex 相關參考資料
Bash if statement with regex - Stack Overflow
Some regex libraries (possible the Java one you use) have methods that specifically test the regex against the whole input string. But in bash ... https://stackoverflow.com bash regex match string - Stack Overflow
If portability is not a concern, I recommend using [[ instead of [ or test as it is ... to Aquarius Power in the comment above, We need to store the regex on a var. https://stackoverflow.com Check if a string matches a regex in Bash script - Stack Overflow
That is, you can define a regex in bash matching the format you want. .... A good way to test if a string is a correct date is to use the command date: if date -d ... https://stackoverflow.com Pattern matching in if statement in bash - Stack Overflow
[[ $string = $pattern ]] doesn't perform regex matching; instead, it's a glob-style pattern match. While . means "any character" in regex, it matches ... https://stackoverflow.com Regex matching in a Bash if statement - Stack Overflow
There are a couple of important things to know about bash's ... So if you write: [[ $x =~ [$0-9a-zA-Z] ]] , the $0 inside the regex on the right will be ... https://stackoverflow.com regular expression - Using regex inside if clause in bash - Unix ...
You need to remove the quoting in the regex match. if [[ $str} =~ m-.m ]]; then. From the bash man page: [...] An additional binary operator, =~, is ... https://unix.stackexchange.com use regular expression in if-condition in bash - Stack Overflow
When using a glob pattern, a question mark represents a single character and an asterisk represents a sequence of zero or more characters: if [[ $gg ... https://stackoverflow.com |