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Blue Forest http://www.lslnet.com at 10:18 on June 6, 2006


System () Function Call

Now I use C + + programming in Unix when using system (cmd) implementation of a print orders, sometimes to normal operation procedures, which sometimes led to the interface, "Dai Zhu," no longer had any response has not enforced print. Dbx can see through the use of the transfer system function, have not returned, it is how will the heroes be? Thank you

System () Function Call

The problem is too extensive, and will need to be aware of the specific problems

System () Function Call

It can provide several possible?

System () Function Call

System () call is immediately returned.
Maybe you can put your order into yourcmd 1>;/dev/null 2>;/dev/null

System () Function Call

If the orders were not enforced immediately return? Lane is not in the process of the country, in my system () function call after commissioning phrase added that the sentence did not debugging. Again, can you explain the above proposal is the reason for this? Thank you

System () Function Call

The test that is not acceptable, it is blocked waiting for the call to return to the SYSTEM.
Your order will be blocked, or the need to import?
Revise your order or use primitives + EXECLP Calling CMD.

System () Function Call

System () call must be completed before such return.
If printers lack of toilet paper, it would not return to complete. They will not return.

If they want to return immediately.
Used
FORK ()
ExecX ()
Done.

System () Function Call

Executive will be able to go into the background

System () Function Call



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