Using tail -f on a log file with grep in bash script

Question

I\'d like to create a script that greps for a specific string in a log file that is being written to. I\'d like to take the first result and put that into a variable for lat

Answer 1

> $var doesn't do what you think it does.
It redirects the output of the preceding command to a file with name of what $var contains.
To capture the output of a command and put it into a variable, use variableName="$(...)".

var="$(tail -f /var/log/named.log | grep $1)"