System() function is unimplemented

Ruby Development
1

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Ruby1.8 e$B$G$9!#e(B
e$BM-$j!'e(B systeme$B!"e(Bpopen
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e$B$H$$$&4D6-$Ge(B makee$B!J$?$@$7e(B fork e$B$OI,?$N$h$&$J$N$Ge(B
int fork() { rb_not_implement(); return -1; }
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NotImplementedError
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e$B8=:$Oe(B io.c e$B$He(B process.c e$B$Ne(B __VMS e$B$r;29M$Ke(B
#ifdef e$B$7$FBP>INEK!e(B
e$B$7$F$$$^$9$,e(B Ruby1.9 e$B$N$h$&$Ke(B HAVE_FORK
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