Get full path without resolving symlinks?

Question

How can I get the full path to a symlink without resolving it to the path of the original file?

For example, if I have a directory set up like this:

~$ tree analysis_results/
analysis_results/
`-- Sample1
    `-- bar.txt -> /Users/me/foo.txt

If I try to get the full path to bar.txt, I end up with the path to foo.txt instead:

~$ readlink -f analysis_results/Sample1/bar.txt
/Users/me/foo.txt

But what I really want is this:

/Users/me/analysis_results/Sample1/bar.txt

Is there a simple way to accomplish this? It looks like I do not have realpath available, not sure if that program does this, or if there is some other command that works like this.

Things get more complicated when my pwd is something like:

/Users/me/analysis/peaks/workflow/code

But I want to read the full path to a symlink like:

/Users/me/analysis/alignment/results/Sample1/bar.txt

Answer 1

With GNU realpath:

$ touch foo
$ ln -s foo bar
$ realpath --no-symlinks bar
/path/to/bar

Answer 2

echo "$(readlink -f analysis_results/Sample1)/bar.txt"

Resolve only the directory and then append the filename to the result.