Dicas diversas sobre TI, sistemas operacionais e networking
awk '{$2="#"$2;print $0}' your_fileThis will add # to the start of the second (space-separated) column regardless of which position it occurs at.
sed -r -e 's/^.{15}/&#/' file
Insert '#' in position 15
apt list --upgradable | cut -d"/" -f1 > /tmp/apt pico /tmp/apt cat /tmp/apt | tr "\n" " " apt install --on...
