Suppose we have a script called ksh_script that looks like this:
#! /bin/sh echo $0 for arg in "$@" ; do echo $arg done
If you invoke it as ./ksh_script one two three, the loader invokes it as /bin/sh ./ksh_script one two three, and then ksh removes itself from the argument list. The output looks like this:
./ksh_script one two three