IO.popen exit the program when it failed

ruby-talk
1

i have been trying to recieved the output of a command with IO.popen and
it works great but if i place a unknown command to the system the ruby
program terminates.

def comando ( inputcmd )
  f = IO.popen(inputcmd)
  output = f.readlines
  return output
end

···

#########################################################
there is a loop calling the method like this:
#########################################################

      cliente.puts "Escriba el comando a ejecutar por cmd.exe: "
      inputcmd = cliente.gets
      cliente.puts comando( inputcmd )

any help will be appreciated!!

Thank you!
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2

i found the solution on the forum :smiley:

i use: IO.popen(cmdline + " 2>&1", "w+")

but now i have another problem, if i run a command that needs several
lines
the output comes back incomplete.
Any ideas?

there is a way to increase the size of the
buffer? does it affect if the variable its been trransfer with
TCPSockets??

···

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3

Daniel Flores wrote:

i found the solution on the forum :smiley:

i use: IO.popen(cmdline + " 2>&1", "w+")

but now i have another problem, if i run a command that needs several
lines
the output comes back incomplete.
Any ideas?

use .read instead of .gets (?)

-r

···

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