Shell script read missing last line

Question

I have an ... odd issue with a bash shell script that I was hoping to get some insight on.

My team is working on a script that iterates through lines in a file and

Answer 1

Use sed to match the last line of a file, which it will then append a newline if one does not exist and have it do an inline replacement of the file:

sed -i '' -e '$a\' file

The code is from this stackexchange link

Note: I have added empty single quotes to -i '' because, at least in OS X, -i was using -e as a file extension for the backup file. I would have gladly commented on the original post but lacked 50 points. Perhaps this will gain me a few in this thread, thanks.