How can I force the script to ignore lines starting with #?

Question

linux

Hello!
There is a script that does this:

#!/bin/bash

while read line
do
echo "This is a line" $line
done < lines.txt

And there is such a file lines.txt

#This is a line text
#blah blah
line1
line2
#line3
line4 six etc

Question - how in this script to make lines starting with a pound sign ignored and echo outputs only uncommented lines?

Answer 1

Is it important for you to solve this with a "script"? Your wording solves the problem
grep -v '^#' <filename>

Answer 2

#!/bin/bash
while read line
do
 if ; then echo "This is a line" $line; fi
done < lines.txt

Answer 3

#!/bin/bash
egrep -v "^#" ./lines.txt | while read line
do
echo "$line"
done