esky is an execution of job freezing for Unix procedure. It can also save the state of a functioning the process to disk then afterward resume it from the point it left off, probably on a diverse machine. esky presently works on a incomplete but non-trivial variety of processes. esky can also survive with programs that open or mmap() files, as well as opening the collective libraries with dlopen(). esky is executed for totally in userspace - no kernel patches or modules are mandatory. It works in Linux 2.2 and Solaris 2.6 and is written to be self-sufficient of CPU type.