1096  grep France,2019,PHP < wilders.csv > php_france_2019.txt
 1097  grep France,2019,PHP < wilders.csv | wc -l > php_france_2019.txt
 1098  grep JavaScript wilders.csv > js.csv
 1099  grep Biarritz js.csv > js_bia.csv
 1100  grep Toulouse js.csv > js_tlse.csv
 1101  cat js_bia.csv js_tlse.csv | sort -u > javascript_biarritz_toulouse.csv
 1102  history > hist.txt