Option for Multiple Job validation from the command line?

I would like to automate the job validation step. I am able to validate single job by using below command.

"%LINK_DIR%\bin\al_engine.exe" -D -XVJ@Jobname -NMicrosoft_SQL_Server -U*** -P*** -S*** -Q*** -ltrace_log_file -zerror_log_file > nul

but for that i have to pass JobName manually in "-XVJ@Jobname" . Suppose i have multiple Job in my project and that i want to validate through command line. so is there any option available to "Validate all Job" without giving Jobname Each time in @jobname parameter.

Thanks & Regards,

Mahesh K