The newest build of OCSSW reorganized things a bit. Therefore, try running: which val_extract
It should point to: ~/seadas-7.4/ocssw/bin/val_extract instead of the old version: ~/seadas-7.4/ocssw/run/bin/linux_64/val_extract
When you ran ~/seadas-7.4/ocssw/run/scripts/install_ocssw.py, the old binaries in the old location will still exist. This is not necessarily a problem, but you will need to update your ENV $PATH variable with the locations of the new binaries: ~/seadas-7.4/ocssw/bin. You likely have an ENV variable called $OCSSWROOT that points to ~/seadas-7.4/ocssw; if so you will just need to run: export PATH=$OCSSWROOT/bin:$PATH
Then try running which val_extract again and it should find ~/seadas-7.4/ocssw/bin/val_extract. If it does, then val_extract version=1 should return:
I've still to test out the mk_matchup.py script.