in reply to Ulimit makes program hang

You are suffering from buffering somewhere. I did:
#!/usr/bin/perl -wl select STDERR; $|=1; print $$; sleep 1; print qx(./theProgram);
and it worked as expected.
[]s, HTH, Massa (κς,πμ,πλ)

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Re^2: Ulimit makes program hang
by Anonymous Monk on Aug 13, 2008 at 16:51 UTC
    This program hangs also. The effect is exactly the same as mine program.