I have a set of data in a file.
psf7433-nlhrms unit7433-nobody unit7333-opera bpx7333-operations app7333-osm unit7330-partners psf7331-pdesmond unit7333-projm mnp7330-redirect unit7333-retailbanking cpq7333-rkarmer unit6333-sales ring7323-support unit7133-telco post7323-uadb sun7335-ukhrms burp7133-wfnmreply
How to ignore the starting alphabetic characters in each line and the characters after the numeric and get the count of the unique numbers. (or) How to retrieve only the numeric value in each line and get their unique count.
Considering we manage to extract only the numeric values, we will get this.
7433 7433 7333 7333 7333 7330 7331 7333 7330 7333 7333 6333 7323 7133 7323 7335 7133
Now, I want the unique count of the retrieved numeric values. So ignoring the repetitions, I should get the following final output.
I am unable to do this either by using awk or sed or even simple grep | cut
I do not want the list of extracted values, I want only the final count as the answer.