> The first is I am not entirely sure their testing environment is using 64 bit linux, it could be 32 bit linux Maybe it's ARM, or MIPS, or… Followup problem:

> The first is I am not entirely sure their testing environment is using 64 bit linux, it could be 32 bit linux Maybe it's ARM, or MIPS, or… Followup problem: write a sequence of bytes that performs a jump on one architecture, and something harmless or reversible on the other(s).