-bash: dig: command not found -bash: nslookup: command not found
If you receive these errrors from your Linux System you are missing essential bind-utilities.
You can fix the error by running these commands.
For CentOS 6 and 7 or RHEL
yum install bind-utils
For Newer CentOS 7, CentOS 8 or RHEL 7 and RHEL 8
dnf install bind-utils
For Ubuntu and Debian System
sudo apt install dnsutils
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