Semantic version numbers for macOS

versioning_semver.sh

# bash
product_version=$(sw_vers -productVersion) # 10.14.6
os_vers=( ${product_version//./ } ) # ( 10 14 6 )
os_vers_major="${os_vers[0]}" # 10
os_vers_minor="${os_vers[1]}" # 14
os_vers_patch="${os_vers[2]}" # 6
os_vers_build=$(sw_vers -buildVersion) # 18G87
echo "${os_vers_major}.${os_vers_minor}.${os_vers_patch}+${os_vers_build}" # 10.14.6+18G87

# zsh
product_version=$(sw_vers -productVersion) # 10.14.6
os_vers=( ${(@s:.:)product_version} ) # ( 10 14 6 )
os_vers_major="${os_vers[1]}" # 10
os_vers_minor="${os_vers[2]}" # 14
os_vers_patch="${os_vers[3]}" # 6
os_vers_build=$(sw_vers -buildVersion) # 18G87
echo "${os_vers_major}.${os_vers_minor}.${os_vers_patch}+${os_vers_build}" # 10.14.6+18G87