Update AVG Anti-Virus Silently Using Command-Line

There is an undocumented command-line parameter (/SCHED) that can be used with AVG Updater to check for and install updates automatically. The /SCHED switch can be used with AVG Anti-Virus versions 7 & 8.

AVG Anti-Virus 8.x

"%ProgramFiles%\AVG\AVG8\avgupd.exe" /SCHED=4

AVG Anti-Virus 7.x

"%ProgramFiles%\Grisoft\AVG7\avginet.exe" /SCHED=4

To test if the last update was successful, open AVG User Interface and verify the Last scan/Last update time and the Virus Database version.