Update the command syntax.
#! /bin/sh
python3 kgtk/join/ifexists.py \
kgtk/join/test/ifexists-test1-file1.tsv \
- kgtk/join/test/ifexists-test1-file2.tsv \
+ --filter-on kgtk/join/test/ifexists-test1-file2.tsv \
--output-file kgtk/join/test/ifexists-test1-default-output.tsv
