$ cat /usr/bin/unzipsfx mysfx > mysfx_exe
$ zip -A mysfx_exe
mysfx_exe: adjusting offsets for a preamble of 47552 bytes
$ file mysfx_exe
mysfx_exe: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for GNU/Linux 2.2.5, dynamically linked (uses shared libs), stripped