FreeBSD/Linux Kernel Cross Reference
sys/Documentation/mono.txt

                    Mono(tm) Binary Kernel Support for Linux
                    -----------------------------------------
     
     To configure Linux to automatically execute Mono-based .NET binaries
     (in the form of .exe files) without the need to use the mono CLR
     wrapper, you can use the BINFMT_MISC kernel support.
     
     This will allow you to execute Mono-based .NET binaries just like any
     other program after you have done the following:
    
    1) You MUST FIRST install the Mono CLR support, either by downloading
       a binary package, a source tarball or by installing from CVS. Binary
       packages for several distributions can be found at:
    
            http://go-mono.com/download.html
    
       Instructions for compiling Mono can be found at:
    
            http://www.go-mono.com/compiling.html
    
       Once the Mono CLR support has been installed, just check that
       /usr/bin/mono (which could be located elsewhere, for example
       /usr/local/bin/mono) is working.
    
    2) You have to compile BINFMT_MISC either as a module or into
       the kernel (CONFIG_BINFMT_MISC) and set it up properly.
       If you choose to compile it as a module, you will have
       to insert it manually with modprobe/insmod, as kmod
       cannot be easily supported with binfmt_misc. 
       Read the file 'binfmt_misc.txt' in this directory to know
       more about the configuration process.
    
    3) Add the following entries to /etc/rc.local or similar script
       to be run at system startup:
    
    # Insert BINFMT_MISC module into the kernel
    if [ ! -e /proc/sys/fs/binfmt_misc/register ]; then
            /sbin/modprobe binfmt_misc
            # Some distributions, like Fedora Core, perform
            # the following command automatically when the
            # binfmt_misc module is loaded into the kernel
            # or during normal boot up (systemd-based systems).
            # Thus, it is possible that the following line
            # is not needed at all.
            mount -t binfmt_misc none /proc/sys/fs/binfmt_misc
    fi
    
    # Register support for .NET CLR binaries
    if [ -e /proc/sys/fs/binfmt_misc/register ]; then
            # Replace /usr/bin/mono with the correct pathname to
            # the Mono CLR runtime (usually /usr/local/bin/mono
            # when compiling from sources or CVS).
            echo ':CLR:M::MZ::/usr/bin/mono:' > /proc/sys/fs/binfmt_misc/register
    else
            echo "No binfmt_misc support"
            exit 1
    fi
    
    4) Check that .exe binaries can be ran without the need of a
       wrapper script, simply by launching the .exe file directly
       from a command prompt, for example:
    
            /usr/bin/xsd.exe
    
       NOTE: If this fails with a permission denied error, check
             that the .exe file has execute permissions.

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