grep -v "wp.pl$\|gmail.com$\|o2.pl$\|tlen.pl$\|gazeta.pl$\|onet.pl$" 1 > 2

grep -roE "\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,6}\b"

grep -roE '\b(https?|ftp|file)://[-A-Za-z0-9+&@#/%?=~_|!:,.;]*[-A-Za-z0-9+&@#/%=~_|]'

apt install cups cups-client && hp-setup -i

rsync -a *  root@XX.XX.XX.XX:/home/juzek/

:%s/[Ctrl+v]ufeff//g

grep --exclude-dir=katalog wyszukiwana_fraza

convert plik.png -resize 32x32 plik_32.png && convert plik_32.png icon.ico