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Full Discussion: How to sort version numbers?
Top Forums Shell Programming and Scripting How to sort version numbers? Post 302626583 by drl on Thursday 19th of April 2012 12:36:12 PM
Old 04-19-2012
Hi.

Recent versions of GNU ls have an ability like this. Using your list of version strings as a-v.tar.gz
Code:
#!/usr/bin/env bash

# @(#) s1	Demonstrate sort by version, GNU ls.

# Utility functions: print-as-echo, print-line-with-visual-space, debug.
# export PATH="/usr/local/bin:/usr/bin:/bin"
pe() { for _i;do printf "%s" "$_i";done; printf "\n"; }
pl() { pe;pe "-----" ;pe "$*"; }
edges() { local _f _n _l;: ${1?"edges: need file"}; _f=$1;_l=$(wc -l $_f);
  head -${_n:=3} $_f ; pe "--- ( $_l: lines total )" ; tail -$_n $_f ; }
db() { ( printf " db, ";for _i;do printf "%s" "$_i";done;printf "\n" ) >&2 ; }
db() { : ; }
C=$HOME/bin/context && [ -f $C ] && $C ls align

pl " Results:"
( pe "Plain	Version"
paste <( ls -1 a* ) <( ls -1v a* )
) |
align

exit 0

producing:
Code:
% ./s1

Environment: LC_ALL = C, LANG = C
(Versions displayed with local utility "version")
OS, ker|rel, machine: Linux, 2.6.26-2-amd64, x86_64
Distribution        : Debian GNU/Linux 5.0.8 (lenny) 
bash GNU bash 3.2.39
ls (GNU coreutils) 6.10
align 1.7.0

-----
 Results:
Plain			Version
a-0.1.0.tar.gz		a-0.1.0.tar.gz
a-0.1.tar.gz		a-0.1.tar.gz
a-0.10.0.tar.gz		a-0.2.0.tar.gz
a-0.10.3.tar.gz		a-0.2.3.tar.gz
a-0.10.tar.gz		a-0.2.tar.gz
a-0.100.0.tar.gz	a-0.3.0.tar.gz
a-0.100.tar.gz		a-0.3.tar.gz
a-0.11.0.tar.gz		a-0.10.0.tar.gz
a-0.11.tar.gz		a-0.10.3.tar.gz
a-0.2.0.tar.gz		a-0.10.tar.gz
a-0.2.3.tar.gz		a-0.11.0.tar.gz
a-0.2.tar.gz		a-0.11.tar.gz
a-0.3.0.tar.gz		a-0.100.0.tar.gz
a-0.3.tar.gz		a-0.100.tar.gz

It appears best to have a consistent number of sub-versions in the version strings.

Best wishes ... cheers, drl
 

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LEARN ABOUT OPENSOLARIS

getusershell

getusershell(3C)					   Standard C Library Functions 					  getusershell(3C)

NAME

       getusershell, setusershell, endusershell - get legal user shells

SYNOPSIS

       #include <unistd.h>

       char *getusershell(void);

       void setusershell(void);

       void endusershell(void);

DESCRIPTION

       The  getusershell()  function  returns  a  pointer  to  a  legal  user  shell  as defined by the system manager in the file /etc/shells. If
       /etc/shells does not exist, the following locations of the standard system shells are used in its place:

	 /bin/bash		    /bin/csh
	 /bin/jsh		    /bin/ksh
	 /bin/ksh93		    /bin/pfcsh
	 /bin/pfksh		    /bin/pfsh
	 /bin/sh		    /bin/tcsh
	 /bin/zsh		    /sbin/jsh
	 /sbin/pfsh		    /sbin/sh
	 /usr/bin/bash		    /usr/bin/csh
	 /usr/bin/jsh		    /usr/bin/ksh
	 /usr/bin/ksh93 	    /usr/bin/pfcsh
	 /usr/bin/pfksh 	    /usr/bin/pfsh
	 /usr/bin/sh		    /usr/bin/tcsh
	 /usr/bin/zsh		    /usr/sfw/bin/zsh
	 /usr/xpg4/bin/sh

       The getusershell() function opens the file /etc/shells, if it exists, and returns the next entry in the list of shells.

       The setusershell() function rewinds the file or the list.

       The endusershell() function closes the file, frees any memory used by getusershell() and setusershell(), and rewinds the file /etc/shells.

RETURN VALUES

       The getusershell() function returns a null pointer on EOF.

BUGS

       All information is contained in memory that may be freed with a call to endusershell(), so it must be copied if it is to be saved.

NOTES

       Restricted shells should not be listed in /etc/shells.

SunOS 5.11							    1 Nov 2007							  getusershell(3C)
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