Click here to Skip to main content
15,843,144 members
Please Sign up or sign in to vote.
1.00/5 (2 votes)
See more:
I am currently working on a bash script and I need a regex that allows only lowercase alphanumeric, hyphen and dots.

Please help me!

What I have tried:

So far, I have tried this:

Bash
"[a-z-]+"
Posted
Updated 10-Sep-23 4:18am
v2

Try this one:
[a-z\-\.]+

You can test regexes online at https://regexr.com[^]
 
Share this answer
 
Quote:
regex that allow only lowercase alphanumeric,

I would try domething like:
[a-z0-9\-\.]+

Just a few interesting links to help building and debugging RegEx.
Here is a link to RegEx documentation:
perlre - perldoc.perl.org[^]
Here is links to tools to help build RegEx and debug them:
.NET Regex Tester - Regex Storm[^]
Expresso Regular Expression Tool[^]
RegExr: Learn, Build, & Test RegEx[^]
Online regex tester and debugger: PHP, PCRE, Python, Golang and JavaScript[^]
This one show you the RegEx as a nice graph which is really helpful to understand what is doing a RegEx: Debuggex: Online visual regex tester. JavaScript, Python, and PCRE.[^]
This site also show the Regex in a nice graph but can't test what match the RegEx: Regexper[^]
 
Share this answer
 
v2

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)



CodeProject, 20 Bay Street, 11th Floor Toronto, Ontario, Canada M5J 2N8 +1 (416) 849-8900