in reply to Re^5: Capture::Tiny alternative
in thread Capture::Tiny alternative

my $cmd = `/usr/sbin/sshuttle ...` Instead of this: my $cmd = '/usr/sbin/sshuttle ...'

I don't think that'll help, as the OP said they want to stream the output of the command, while backticks wait until the external command has completed.

I suspect there's something going on in the IPC interaction between sshuttle and perl calling it (maybe sshuttle isn't daemonizing properly when called from Perl or something), at the moment I don't know more.

melezhik: Just a guess, try my $cmd = 'nohup /usr/sbin/sshuttle ...' although that may prevent you from capturing its output, not sure if that's what you want or not. But since you're asking sshuttle to damonize (-D) anyways...

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Re^7: Capture::Tiny alternative
by melezhik (Monk) on Mar 24, 2017 at 15:29 UTC
    I don't think that'll help, as the OP said they want to stream the output of the command, while backticks wait until the external command has completed.
    Sure
    Just a guess, try my $cmd = 'nohup /usr/sbin/sshuttle ...' although that may prevent you from capturing its output, not sure if that's what you want or not.
    Unfortunately in real program $cmd comes as users input parameter which I can't alter or modify
    I suspect there's something going on in the IPC interaction between sshuttle and perl calling it
    Yeah, this what I tried to say at the very beginning. There are some rare cases ( rare external commands to interact with ) where Perl/IPC/open ( $cmd |) "hangs" ...
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