12-19-2016
I don't think that
sort will automatically do what you want, you need to give it the information on how to sort. The problem you might suffer is that if you want to numerically sort, the start of the number is a variable length from the start of the string.
If you had a line that the field was numeric from (say) character 11, we could work with that using the
-k flag, even if it was a bit complex. Because we can't be sure where the digits start, this will be more complex.
One way might be to process the file and insert a placeholder character (choose something that will never appear naturally in the file) so as can use it to get the numerics in a fixed position. Then we can sort numerically as a secondary key (with the primary sort key stopping before the numeric) and finally strip out the placeholder character.
Put in a more structured form:-
- Convert lines that start something like flrp-b-an2 to start like this flrp-b-an@2 (using @ as the placeholder.
- Sort the file primary key starting in field 1, character 1 and ending at field 1 character 10 (inclusive)
- ... and the secondary key being numeric starting field1 character 11 and ending at the end of field 1
- Strip out the placeholder characters
Would that help?
Robin
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UNIQ(1) General Commands Manual UNIQ(1)
NAME
uniq - report repeated lines in a file
SYNOPSIS
uniq [ -udc [ +n ] [ -n ] ] [ input [ output ] ]
DESCRIPTION
Uniq reads the input file comparing adjacent lines. In the normal case, the second and succeeding copies of repeated lines are removed;
the remainder is written on the output file. Note that repeated lines must be adjacent in order to be found; see sort(1). If the -u flag
is used, just the lines that are not repeated in the original file are output. The -d option specifies that one copy of just the repeated
lines is to be written. The normal mode output is the union of the -u and -d mode outputs.
The -c option supersedes -u and -d and generates an output report in default style but with each line preceded by a count of the number of
times it occurred.
The n arguments specify skipping an initial portion of each line in the comparison:
-n The first n fields together with any blanks before each are ignored. A field is defined as a string of non-space, non-tab charac-
ters separated by tabs and spaces from its neighbors.
+n The first n characters are ignored. Fields are skipped before characters.
SEE ALSO
sort(1), comm(1)
UNIQ(1)