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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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Difficulty: Medium
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echo(1B)					     SunOS/BSD Compatibility Package Commands						  echo(1B)

NAME
echo - echo arguments to standard output SYNOPSIS
/usr/ucb/echo [-n] [argument] DESCRIPTION
echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output. echo is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi- ronment variables. For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows: o echo your current-working-directory's full pathname o pipe the output through tr to translate the path's embedded slash-characters into space-characters o pipe that output through wc -w for a count of the names in your path. example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w" See tr(1) and wc(1) for their functionality. The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be invoked if the user calls echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the black-slashed escape characters, and ksh's echo() also understands a as the audible bell character; however, these commands do not have an -n option. OPTIONS
-n Do not add the NEWLINE to the output. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5) NOTES
The -n option is a transition aid for BSD applications, and may not be supported in future releases. SunOS 5.11 3 Aug 1994 echo(1B)

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