Cannot find source links in source file but still shows in apt update

I’m new to this, and I was trying to install MS SQL in 18.04. But I faced some issue and wanted to remove everything regarding MS SQL for new. So I purge everything and removed all GPG from /etc/apt/sources.list related to Microsoft. Also I removed the GPG added from curl https://packages.microsoft.com/keys/microsoft.asc | sudo apt-key add…

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Display only IP addresses from nslookup without writing output to file

i am a student newly studying cybersecurity. We are using kali linux for the phases of pen-testing. I’m new to bash script too. Command: nslookup -type=mx cathay.com.sg EXAMPLE OUTPUT Server: 192.168.48.2 Address: 192.168.48.2#53 Non-authoritative answer: cathay.com.sg mail exchanger = 0 cathay-com-sg.mail.protection.outlook.com. Authoritative answers can be found from: I would like for it to only display:…

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