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I installed wireshark-2.6.1 from sources. I am using the below command line for capturing json output:

/opt/wireshark-2.6.1/bin/tshark -c 10 -T json -n -Q -q -t u > /tmp/out.txt

I do see a json output in the /tmp/out.txt, but before the json string, there are few lines with the "Capture-DEBUG" string in them. A sample line looks likes this:

(process:14338): Capture-DEBUG: Interface [randpkt] "Random packet generator"

Any idea how to suppress these lines from appearing in the output file?

Thanks Jitendra

I installed wireshark-2.6.1 from sources. I am using the below command line for capturing json output:

/opt/wireshark-2.6.1/bin/tshark -c 10 -T json -n -Q -q -t u  > /tmp/out.txt
/tmp/out.txt

(process:14338): Capture-DEBUG:   Interface [randpkt] "Random packet generator"
generator"

I installed wireshark-2.6.1 from sources. I am using the below command line for capturing json output:

/opt/wireshark-2.6.1/bin/tshark -c 10 -T json -n -Q -q -t u  > /tmp/out.txt

I do see a json output in the /tmp/out.txt, but before the json string, there are few lines with the "Capture-DEBUG" string in them. A sample line looks likes this:

(process:14338): Capture-DEBUG:   Interface [randpkt] "Random packet generator"

Any idea how to suppress these lines from appearing in the output file?

UPDATE: Got two VM's running, one with Scientific-Linux-6.9 (same as my desktop version) and the second one a CentOS-Linux-7.4. The above mentioned problem appeared on Scientific-Linux-6.9 VM but not on CentOS-Linux-7.4 VM. Could be a Scientific-Linux-6.9 distro related issue?

Thanks Jitendra

I installed wireshark-2.6.1 from sources. I am using the below command line for capturing json output:

/opt/wireshark-2.6.1/bin/tshark -c 10 -T json -n -Q -q -t u  > /tmp/out.txt

I do see a json output in the /tmp/out.txt, but before the json string, there are few lines with the "Capture-DEBUG" string in them. A sample line looks likes this:

(process:14338): Capture-DEBUG:   Interface [randpkt] "Random packet generator"

Any idea how to suppress these lines from appearing in the output file?

UPDATE: Got For testing, got two VM's running, one with Scientific-Linux-6.9 (same as my desktop version) and the second one a CentOS-Linux-7.4. The above mentioned problem appeared on Scientific-Linux-6.9 VM but not on CentOS-Linux-7.4 VM. Could be a Scientific-Linux-6.9 distro related issue?

Thanks Jitendra

On my desktop running Scientific-Linux-6.9, I installed wireshark-2.6.1 from sources. I am using the below command line for capturing json output:

/opt/wireshark-2.6.1/bin/tshark -c 10 -T json -n -Q -q -t u  > /tmp/out.txt

I do see a json output in the /tmp/out.txt, but before the json string, there are few lines with the "Capture-DEBUG" string in them. A sample line looks likes this:

(process:14338): Capture-DEBUG:   Interface [randpkt] "Random packet generator"

Any idea how to suppress these lines from appearing in the output file?

UPDATE: For testing, got two VM's running, one with Scientific-Linux-6.9 (same as my desktop version) and the second one a CentOS-Linux-7.4. The above mentioned problem appeared on Scientific-Linux-6.9 VM but not on CentOS-Linux-7.4 VM. Could be a Scientific-Linux-6.9 distro related issue?

Thanks Jitendra