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linux - How to get full path of a file?

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 <command>

dir> <command> file.txt  

should print

/nfs/an/disks/jj/home/dir/file.txt
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Use readlink:

readlink -f file.txt

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