cpt=0 for file in $1/*.bak do fname=$(basename $file ".shelve.bak") if [ -f UNFIXED_TRANS_scores/$fname.shelve.bak ] then python UNFIXED_TRANS_MINIAE_mlp.py UNFIXED_TRANS_MODEL/$fname UNFIXED_TRANS_scores/$fname & cpt=$(($cpt+1)) fi if [ $cpt -eq 4] then wait cpt=0 fi done