I suggest that you print the rest of $?:
$? & 127   # signal number
$? & 128   # dumped core

[download]
See system.

In reply to Re: system command - OK on 32 bit, fails on 64 bit Linux - why? by cdarke
in thread system command - OK on 32 bit, fails on 64 bit Linux - why? by geep999

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