Re: pipe issue (linux)

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Re^2: pipe issue (linux) by haukex (Archbishop) on May 05, 2016 at 20:23 UTC
Hi james28909, From exec: The exec function executes a system command and never returns You're probably thinking of backticks aka qx, although that will also wait for the completion of the command before returning, so I don't think it'll help here. (BTW, a good alternative to qx is Capture::Tiny.) What might work is opening a pipe (Using open() for IPC) or using a module like IPC::Run (I haven't used the latter myself yet but it seems to be a good module). However, using those in the OP's `line_process.pl` won't fix the problem if `dhcp_line_dispacher.pl` is still buffering its output ;-) Regards, -- Hauke D	[reply] [d/l] [select]

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Re^2: pipe issue (linux)
by haukex (Archbishop) on May 05, 2016 at 20:23 UTC

From exec:

The exec function executes a system command and never returns

You're probably thinking of backticks aka qx, although that will also wait for the completion of the command before returning, so I don't think it'll help here. (BTW, a good alternative to qx is Capture::Tiny.)

What might work is opening a pipe (Using open() for IPC) or using a module like IPC::Run (I haven't used the latter myself yet but it seems to be a good module).

However, using those in the OP's line_process.pl won't fix the problem if dhcp_line_dispacher.pl is still buffering its output ;-)

Regards,
-- Hauke D

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