Are you sure about that? When I execute:

perl -e 'system("echo 1;echo 2;echo 3")'

I get the output: 

1
2
3

[download]

Are you interupting execution, with perhaps ^c? In this case, yes, you are killing all jobs simultaneously. You could execute all three by splitting into multiple system calls: 

system ("vp -e $ENV{VREL}");
system ("vscmd set-measure-mode fast; vscmd pg-address-check off");

[download]

In reply to Re^3: Multiple commands with one system call by kennethk
in thread Multiple commands with one system call by renzosilv

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