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I'm trying to sort a file where typically (not always) the lines are
where fields are separated with
:. Some lines do not follow this pattern, I'm not interested in them, they can be anywhere in the output.
I want to sort the lines only on the second column (and not on values), but when I do
sort -t: -k 2 myfile, it sorts the file on all the line.
How to use the
-k in order to have what I need?