Working regex does not match in bash

Asked Jun 26 '20 at 15:04

Active Jun 26 '20 at 15:04

Viewed 3,181 times

i have a CIDR range in this regex

^5\.188\.62\.([1-9]?\d|[12]\d\d)$

I am able to confirm matching values using https://regexr.com

Now i am testing some code and i am using the following as a sample to test matches

 var='^5\.188\.62\.111';[[ $var =~ '^5\.188\.62\.([1-9]?\d|[12]\d\d)$' ]] && echo yes || echo no

In final, i am not able to get it working.

Any tip to solve?

Thanks

asked Jun 26 '20 at 15:04

Walter Scarcella

Shouldn't it be something like `var=5.188.62.212`? – Eduardo Trápani Jun 26 '20 at 15:07
When using `=~`, don't quote the thing on the right – Andy Dalton Jun 26 '20 at 15:08
When answering questions, don't answer in the comments ;) (@AndyDalton) -- perhaps https://unix.stackexchange.com/q/32119/117549 ? – Jeff Schaller Jun 26 '20 at 15:10
2

See also [Why does my regular expression work in X but not in Y?](https://unix.stackexchange.com/questions/119905/why-does-my-regular-expression-work-in-x-but-not-in-y) - in particular, note that `\d` is a PCRE element – steeldriver Jun 26 '20 at 15:11
FWIW `[[ $var =~ '^5\.188\.62\.([1-9]?\d|[12]\d\d)$' ]]` would be OK (and would match on `var=5.188.62.111`) in `zsh` instead of `bash` after `set -o rematchpcre`. – Stéphane Chazelas Jun 26 '20 at 15:25

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