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Full Discussion: How to sort version numbers?
Top Forums Shell Programming and Scripting How to sort version numbers? Post 302626371 by LessNux on Thursday 19th of April 2012 08:55:04 AM
Old 04-19-2012
Question How to sort version numbers?
I would like to know how to sort version numbers, using bash or perl. I would like to sort file names that are program names with version numbers and extensions, such as hello-0.2.3.tar.gz and hello-0.10.3.tar.gz.

Version numbers of computer programs do not comply with the mathematical rule concerning the below-decimal-point part. Mathematics treats the part below decimal point differently from the integral part. In mathematics, the following sort order holds.

0.1 = 0.10 = 0.100 < 0.11 < 0.2 < 0.3

On the other hand, the version numbering system treats the part below decimal point in the same manner as the integral part. In the version numbering system, the following sort order holds.

0.1.0 < 0.2.0 < 0.3.0 < 0.10.0 < 0.11.0 < 0.100.0

The "sort" command on bash fails to achieve this latter result. How can one achieve this latter result?

Many thanks in advance.
 

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LEARN ABOUT HPUX

modfd64

modfd64(3M)															       modfd64(3M)

NAME

       modfd64(), modfd128(), modfd32() - decompose decimal floating-point numbers

SYNOPSIS

DESCRIPTION

       The  function  breaks  the  argument  x into integral and fractional parts, each of which has the same sign as the argument.  It stores the
       integral part as a in the object pointed to by iptr.

       is a version of it takes a first argument and returns a result.

       is a version of it takes a first argument and returns a result.

       These math functions are supported for HP-UX 11i Version 3 September 2008 Update and forward.

USAGE

       To use any of these functions, compile with the option.

       Make sure your program defines and then includes

       Link in the math library by specifying or on the linking command line.

       For more information, see the at the following site:

RETURN VALUE

       returns a result with the same sign as x.

       in the object pointed to by iptr.

       returns NaN and stores NaN in the object pointed to by iptr.

ERRORS

       No errors are defined.

SEE ALSO

       frexpd64(3M), ldexpd64(3M), truncd64(3M), scalblnd64(3M), scalbnd64(3M), math(5).

STANDARDS CONFORMANCE

       These functions conform to ISO/IEC TR 24732, "Extension for the programming language C to support decimal floating-point arithmetic".

							     HP Integrity Server Only						       modfd64(3M)
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