How to Fix “missing newline or line too long” in a Linux Server

Question

How to remove the following errors when noticed in “/etc/hosts.allow” and “/etc/hosts.deny” files. 1) auth|security:err| error sshd[7275222]: warning: /etc/hosts.allow, line0: missing newline or line too long 2) auth|security:err| error sshd[7275222]: warning: /etc/hosts.deny, line0: missing newline or line too long

Answer

To remove the errors do the following on the management node as root. Go to the last line, and hit “Enter”. This will add a new line to the file. Save the file and done.