Grep output from USBPcap

Question

I hope cygwin questions fits here.

If I try:

USBPcapCMD.exe -d \\.\USBPcap4 -o - | hexdump -C

it gives me the expected result. But if I try to grep that result I get nothing:

USBPcapCMD.exe -d \\.\USBPcap4 -o - | hexdump -C  | grep "76 58"

I thing there is some kind of buffering hosing it up, becauce:

USBPcapCMD.exe -d \\.\USBPcap4 -o - | hexdump -C  | grep "76 58" > test.txt

leaves an empty text-file too.

score 1 · Answer 1 · edited Apr 13 '17 at 12:37

1

Looking further into my hunch, i found:

And my working command is:

USBPcapCMD.exe -d \\.\USBPcap4 -o - | stdbuf -oL -eL hexdump -C  | grep "76 58"

edited Apr 13 '17 at 12:37

Community

answered Jan 11 '17 at 11:40

Ove Halseth

1 Answers1