Change file and print changed lines with sed

change file and print changed lines with sed

sed -i 's/8.8.8.8/8.8.4.4/ w/dev/stdout' /etc/resolv.conf
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Add nginx repository Ubuntu

 Add nginx repository Ubuntu # 1. Download the NGINX signing key curl https://nginx.org/keys/nginx_signing.key | gpg --dearmor | sudo tee /u...

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