Prepending ‘/’ to the output of a tshark scan in BASH

Hi Folks,

I'm running this tshark scan + filter: sudo tshark -I -i en1 -T fields -e wlan.sa_resolved -e wlan_mgt.ssid -e radiotap.dbm_antsignal type mgt subtype probe-req

and need to prepend each line with a '/', to get an output like this:

/Apple_9d:ex:xx eduroam -90

I've tried sed 's:^:/:'and also | awk '{print " / " $0}'but both of those stop the output of the scan from displaying (the packet counter appears instead). The only way I've got it to almost work is with sudo tshark -I -i en1 -T fields -e wlan.sa_resolved -e wlan_mgt.ssid -e radiotap.dbm_antsignal type mgt subtype probe-req > >(sed 's:^:/:'), but then you only see the output when you stop the command. Very furstrating.

I believe it's something to do with the probe requesttype filter, as when I remove that both sed & awk work, but then I'm getting lots of frames etc that I don't need. Any thoughts would be greatly appreciated!