How to read the last line of a text file into a variable using Bash? [closed]

问题

I want to read a text file called history.txt that contains multiple lines and store the content of the last line into a variable called "tag".

Thanks

回答1:

tag=$( tail -n 1 history.txt )

回答2:

cat FileName | while read oneline
do
echo "a oneline: $line"
done

来源：https://stackoverflow.com/questions/42987486/how-to-read-the-last-line-of-a-text-file-into-a-variable-using-bash