Wireshark · Wireshark-users: [Wireshark-users] Tshark filter problems

[Michael Bann <mbann@xxxxxxxxxxxx>]

Hey folks,

I'm having a problem running tshark with a simple filter. Here's what 
happens.

I run "tshark -f `cat /path/to/my_filter`" and I get the following error:
"tshark: Capture filters were specified both with "-f" and with 
additional command-line arguments"

Now, before updating I was able to run the same command with success 
using an older version of tethereal. Also, if I copy and paste my filter 
into the -f parameter it works fine. I'm not sure where's it's getting 
the idea that there are additional command-line arguments or what to do 
about this problem. Like I said, worked before updating, filter works 
fine if I paste it directly in. However, these rules will be changing a 
lot so copying them in every time is out of the question.

Thanks,

Mike