The exact silent switches the GnuWin32: Flex installer accepts, plus a one-line command you can paste into a script, Intune Win32 app, or Configuration Manager package.
flex-2.5.4a-1.exe /VERYSILENT /SUPPRESSMSGBOXES /NORESTART
Run from the directory containing flex-2.5.4a-1.exe. Download the installer from the Direct link below first.
| Architecture | Scope | Type | Silent switches | Source |
|---|---|---|---|---|
| x86 | - | EXE Inno Setup | Default for Inno Setup |
/S for NSIS, /quiet /norestart for MSI).Prefer the winget route? See the full GnuWin32: Flex install page.