Append text to the ending part of a line?

[Agent-X]

Let's say I have only one line in alien.x like this:

humans

And I wanted to append to the end of that line this:

=food

How would I do that so it looks like this:

humans=food

??

[Franklin52]

Some possibilities:

sed 's/humans/humans=food/'

sed 's/\(.*\)/\1=food/'

awk '{printf("%s=food", $0}'

Regards

[Cabhan]

A common way is also:

sed 's/$/=food/'

This replaces the end-of-line marker (denoted by '$') with the test '=food'. '$' isn't actually in the file (it's what regular expressions call an "anchor", so this doesn't actually replace anything.