Bash Semantic Versioning Validation Regular Expression

validate-semver

#!/bin/bash

version="$1"
[[ -z "$version" ]] && { echo "no version provided" >&2; exit 1; }

semver_regexp='^[vV]?(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)(\-([0-9A-Za-z]*)(\.([0-9A-Za-z]*))*)?(\+[0-9A-Za-z-]+(\.[0-9A-Za-z-])*)?$'

[[ ! "$version" =~ $semver_regexp ]] && { echo "$version is not valid" >&2; exit 1; }