Mac通过终端指令查看系统版本号sw_vers

$ sw_vers
ProductName:    Mac OS X
ProductVersion: 10.14.4
BuildVersion:   18E2035

$ more /System/Library/CoreServices/SystemVersion.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
        <key>ProductBuildVersion</key>
        <string>18E2035</string>
        <key>ProductCopyright</key>
        <string>1983-2019 Apple Inc.</string>
        <key>ProductName</key>
        <string>Mac OS X</string>
        <key>ProductUserVisibleVersion</key>
        <string>10.14.4</string>
        <key>ProductVersion</key>
        <string>10.14.4</string>
        <key>iOSSupportVersion</key>
        <string>12.2</string>
</dict>
</plist>