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Accepted
schroeder
Asked: 2012-02-18 15:21:29 +0800 CST

suppress output of hping in Linux

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I wish to suppress all output to stdout (console) from hping3 from a bash script, but everything I try results in the statistics still being displayed, even tho the individual ping results are suppressed.

I've tried redirecting different ways, command line switch '-q' and nothing works.

Ideas?

hping3 10.1.1.1 -c 1 -q > \dev\null
hping3 10.1.1.1 -c 1 -q > logfile.txt
hping3 10.1.1.1 -c 1 -q 1>\dev\null

All result in the following to the console:

--- 10.1.1.1 hping statistic ---
1 packets transmitted, 1 packets received, 0% packet loss
round-trip min/avg/max = 1.1/1.1/1.1 ms
bash stdout

1 Answers

  1. Best Answer

    As @mark-wagner said, the correct syntax is

    hping3 10.1.1.1 -c 1 -q >/dev/null 2>&1

    This redirects standard output to a bit-bucket file called /dev/null, and then redirects standard error to the same place.

    If this was insufficient (for example, output not on standard error or standard out) then you could do this:

    ( hping3 10.1.1.1 -c 1 -q ) >/dev/null

    This should work, no matter where the output is directed - I think.

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