How to get full path of a file?

Question

Is there an easy way I can print the full path of file.txt ?

file.txt = /nfs/an/disks/jj/home/dir/file.txt

The

Answer 1

echo $(cd $(dirname "$1") && pwd -P)/$(basename "$1")

This is explanation of what is going on at @ZeRemz's answer:

1. This script get relative path as argument "$1"
2. Then we get dirname part of that path (you can pass either dir or file to this script): dirname "$1"
3. Then we cd "$(dirname "$1") into this relative dir
4. && pwd -P and get absolute path for it. -P option will avoid all symlinks
5. After that we append basename to absolute path: $(basename "$1")
6. As final step we echo it