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Full Discussion: Need immediate help with sorting!!!
Top Forums Shell Programming and Scripting Need immediate help with sorting!!! Post 302221969 by drl on Tuesday 5th of August 2008 03:57:38 PM
Old 08-05-2008
Hi.

For folks that need more features than are found in standard sort, there is msort: MSORT

Here is a sample run with msort:
Code:
#!/bin/sh -

# @(#) s1       Demonstrate msort.

# See:
# http://billposer.org/Software/msort.html

set +o nounset
LC_ALL=C ; LANG=C ; export LC_ALL LANG
echo "Environment: LC_ALL = $LC_ALL, LANG = $LANG"
echo "(Versions displayed with local utility \"version\")"
version >/dev/null 2>&1 && version =o $(_eat $0 $1) msort
set -o nounset

FILE=${1-data1}
echo
echo " Data file $FILE:"
echo "12345678901234567890"
cat $FILE

echo
msort -b -e12,15 -c numeric -2 results -1 $FILE

echo
echo " Results from msort:"
echo
cat results

exit 0

producing (using joeyg's amended dataset on file data1):
Code:
$ ./s1
Environment: LC_ALL = C, LANG = C
(Versions displayed with local utility "version")
Linux 2.6.25-2-686
GNU bash, version 3.2.39(1)-release (i486-pc-linux-gnu)
msort - no version provided for /usr/bin/msort.

 Data file data1:
12345678901234567890
/*--- abcd_0050 ---*/
asdfjk
adsfkja
lkjljgafsd

/*--- abcd_0005 ---*/
lkjkljbfkgj
ldfksjgf
dfkgfjb

/*--- abcd_0055 ---*/
klhfdghd
dflkjgd
jfdg

Key 1 obligatory  character range 11 through 14 Increasing numeric
Reading from data1.
Records processed:                          3
Sorting...
Records written:                            3
Comparisons:                                2

 Results from msort:

/*--- abcd_0005 ---*/
lkjkljbfkgj
ldfksjgf
dfkgfjb

/*--- abcd_0050 ---*/
asdfjk
adsfkja
lkjljgafsd

/*--- abcd_0055 ---*/
klhfdghd
dflkjgd
jfdg

This illustrates the CLI use. There is also a GUI front-end available ... cheers, drl
 

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LEARN ABOUT SUSE

gai.conf

gai.conf(5)							File Formats Manual						       gai.conf(5)

NAME

       gai.conf - getaddrinfo(3) configuration file

DESCRIPTION

       A  call	to  getaddrinfo(3)  might return multiple answers.  According to RFC 3484 these answers must be sorted so that the answer with the
       highest success rate is first in the list.  The RFC provides and algorithm for the sorting.  The static	rules  are  not  always  adequate,
       though.	 For this reason the RFC also requires that system administrators get the chance to dynamically change the sorting.  For the glibc
       implementation this can be achieved with the /etc/gai.conf file.

       Each line in the configuration file consists of a keyword and its parameters.  White spaces in any place are ignored.  Lines starting  with
       `#' are comments and are ignored.

       The keywords currently recognized are:

       label netmask precedence
	      The value is added to the label table used in the RFC 3484 sorting.  If any label definition is present in the configuration file is
	      present the default table is not used.  All the label definitions of the default table which are to be maintained have to be  dupli-
	      cated.  Following the keyword the line has to contain a network mask and a label value.

       precedence netmask precedence
	      This  keyword is similar to label but instead the value is added to the precendence table as specified in RFC 3484.  Once again, the
	      presence of a single precedence line in the configuration file causes the default table to not be used.

       reload <yes|no>
	      This keyword control whether a process checks whether the configuration file has been changes since the last time it was	read.	If
	      the  value is `yes' the file is re-read.	This might cause problems in multi-threaded applications and is generally a bad idea.  The
	      default is `no'.

EXAMPLE

       The default table according to RFC 3484 would be specified with the following configuration file:

       label  ::1/128	    0
       label  ::/0	    1
       label  2002::/16     2
       label ::/96	    3
       label ::ffff:0:0/96  4
       precendence  ::1/128	  50
       precendence  ::/0	  40
       precendence  2002::/16	  30
       precendence ::/96	  20
       precendence ::ffff:0:0/96  10

FILES

       /etc/gai.conf

AUTHOR

       Ulrich Drepper <drepper@redhat.com>

SEE ALSO

       getaddrinfo(3), RFC 3484

gai.conf							     May 2006							       gai.conf(5)
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