hiii everyone

[Sadddddss]

i run t load in packet01 and i have a problem /xdp-tutorial/testenv/testenv.sh: line 454: $#-1: substring expression < 0 . what should i do now :((

[KerstinHung]

I met the same problem, and here's how I solved it:

1. Check if the virtual environment has been set up.
   $ t status
2. The error message "line 454: $#-1: substring expression < 0" indicates that there is a missing parameter after t load.
   $ t load xdp_prog_kern.o
   Since the t load is based on ./xdp-loader, I refer to the xdp-loader for the parameter.
3. Check that the eBPF program is actually loaded on the interface (my interface is called test)
   $ sudo xdp-loader status test