url1=https://www.theguardian.com/lifeandstyle/series/killer-sudoku
url2=https://www.sudokuwiki.org/Print_Killer.asp
url3=https://www.killersudokuonline.com/
url4=https://www.dailykillersudoku.com/
for i in ${url1} ${url2} ${url3} ${url4}; do
 chromium-browser ${i} &
done

nemo /home/pi/Documents/jeux/killers_sudoku/wget_sudokuwiki &
nemo ftp://gangand@ftp.cluster015.hosting.ovh.net/www/jj/jeux/sudoku/grilles/killer_sudoku/sudokuwiki &

/home/pi/Documents/jeux/killers_sudoku/wget_sudokuwiki/crontab.sh