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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fmt(1) General Commands Manual fmt(1)
NAME
fmt - format text
SYNOPSIS
width] [file...]
DESCRIPTION
The command is a simple text formatter that fills and joins lines to produce output lines of (up to) the number of characters specified in
the width option. The default width is 72. concatenates the arguments. If none are given, formats text from the standard input.
Blank lines are preserved in the output, as is the spacing between words. does not fill lines beginning with a period for compatibility
with Nor does it fill lines starting with
Indentation is preserved in the output and input lines with differing indentation are not joined (unless is used).
can also be used as an in-line text filter for the command:
reformats the text between the cursor location and the end of the paragraph.
Options
recognizes the following options:
Crown margin mode.
Preserve the indentation of the first two lines within a paragraph and align the left margin of each subsequent line with that
of the second line. This is useful for tagged paragraphs.
Split lines only.
Do not join short lines to form longer ones. This prevents sample lines of code, and other such "formatted" text, from being
unduly combined.
Fill output lines to up to
width columns.
WARNINGS
The width option is acceptable for BSD compatibility, but it may go away in future releases.
SEE ALSO
nroff(1), vi(1).
fmt(1)