[Mono-list] ProcessStartInfo and arguments with a backslash

Uli Hertlein uli at xdt.com.au
Tue Oct 4 07:40:36 EDT 2011

Hi Yves,

On 10/01/2011 08:17 PM, Yves Goergen wrote:
> I am debugging a problem with my .NET application calling a UNIX
> programme with arguments. The bash command line looks like this:
>     /usr/bin/smem -P '/usr/sbin/exim4(\s|$)'
> My C# code to do exactly that is the following:
>     string processPath = "/usr/sbin/exim4(\s|$)";
>     ProcessStartInfo psi = new ProcessStartInfo(
>         "smem",
>         "-P '" + processPath + "'");
>     psi.RedirectStandardOutput = true;
>     psi.UseShellExecute = false;
>     Process p = Process.Start(psi);
> But this is what the started programme gets as arguments:
>     ['/usr/bin/smem', '-P', '/usr/sbin/exim4(s|$)']

I guess that Mono is using bash to execute the command line and that is doing an additional 'resolve'.

Try to set:
	psi.UseShellExecute = false; // Default is true

or double-escape the argument as in:
	string processPath = "/usr/sbin/exim4(\\\\s|$)";


Ulrich Hertlein
Research and Development   mailto:uli at xdt.com.au
XDT Pty Ltd                http://www.xdt.com.au

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