execute complex batch command with cmd /C -


i'm trying run 

 @echo off & /l %%a in (0) tasklist /fi "imagename eq prog.exe" 2>nul | find "prog.exe" >nul || (echo "update" & exit)

as 1 liner with

cmd.exe /c <----here -->

but cmd crashes immediately. when put exact same command in batch file, works. how need format command make work?

background: i'm trying self update (aka "replace while running") c# executable, without creating external batch script aid of "cmd /c".

as code running not inside batch file, percent signs need not escaped, so, not %%a %a

the full command needs quoted

cmd /c "@echo off & /l %a in (0) tasklist /fi "imagename eq prog.exe" 2>nul | find "prog.exe" >nul || (echo "update" & exit)"

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