Log all output from a shell command

Question

I'm writing a ruby script that calls apt-get. I would like to log/display all the output from the apt-get command.

Backticks, %x and the rest mostly return the final output (if at all). I've also looked at IO.popen and Open3.popen series, but they stop logging after the first message.

Is there a way to dump all output as it happens from the shell command?

ptierno · Accepted Answer · 2015-04-17 15:47:10Z

2

You can use IO::popen for this:

IO.popen("apt-get install foobar") do |apt|
  apt.each do |line|
    puts line
  end
end

Hope this helps

answered Apr 17, 2015 at 15:47

ptierno

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1 Comment

tadman Over a year ago

popen3 also allows capturing the STDERR channel.

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