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Full Discussion: sorting(both Ascending & Descending) files based on multiple fields
Top Forums Shell Programming and Scripting sorting(both Ascending & Descending) files based on multiple fields Post 302317143 by apjneeraj on Monday 18th of May 2009 07:06:01 AM
Old 05-18-2009
sorting(both Ascending & Descending) files based on multiple fields
Hi All,

I am encountered with a problem while sorting a file based on multiple columns . I need to sort like:
(field2,ascending) , (field3,ascending) ,(field8,descending) , (field7,ascending),(field13,ascending).

So far i was sorting only in ascending order but here i need to use one descending field also.

Please see the sample text which needs to be sorted based on above rule.The text is TAB delimited.


Code:
200902010606	0001319	2113740F35	0	IDEN		0	0	0	0	0	NULL		AK																					
200902010606	0001319	2113740F39	0	IDEN		0	0	0	0	0	NULL		AK																					
200902010606	0001319	2113740F67	0	WLAN		0	0	0	0	0	NULL		AK																					
200902010606	0001319	2113741F25	0	IDEN		0	0	0	0	0	NULL		AK																					
200902010606	0001319	2113743A19	0	GTSS		0	0	0	0	0	NULL		AK																					
200902010606	0001319	2113743K15	0	IDEN		0	0	0	0	0	NULL		AK																					
200902010606	0001319	2113743L13	0	IDEN		0	0	0	0	0	NULL		AK																					
200902010606	0001319	2113743L17	0	IDEN		0	0	0	0	0	NULL		AK

Previously i was using sort like

sort -t "`echo -e "\t"`" +1 -2 +2 -3 >tmp This sort file using 2nd and 3rd field in ascending order only having TAB as delimiter.

Please help me to sort it out.

Thanks
Neeraj
Last edited by radoulov; 05-18-2009 at 08:56 AM.. Reason: added code tags
 

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LEARN ABOUT MOJAVE

slapo-valsort

SLAPO-VALSORT(5)						File Formats Manual						  SLAPO-VALSORT(5)

NAME

       slapo-valsort - Value Sorting overlay to slapd

SYNOPSIS

       /etc/openldap/slapd.conf

DESCRIPTION

       The  Value Sorting overlay can be used with a backend database to sort the values of specific multi-valued attributes within a subtree. The
       sorting occurs whenever the attributes are returned in a search response.

       Sorting can be specified in ascending or descending order, using either numeric or alphanumeric sort methods.  Additionally,  a	"weighted"
       sort  can  be specified, which uses a numeric weight prepended to the attribute values.	The weighted sort is always performed in ascending
       order, but may be combined with the other methods for values that all have equal weights. The weight is specified by prepending an  integer
       weight  {<weight>} in front of each value of the attribute for which weighted sorting is desired. This weighting factor is stripped off and
       never returned in search results.

CONFIGURATION

       These slapd.conf options apply to the Value Sorting overlay.  They should appear after the overlay directive.

       valsort-attr <attribute> <baseDN> (<sort-method> | weighted [<sort-method>])
	      Configure a sorting method for the specified attribute in the subtree rooted at baseDN.  The sort-method may be one of alpha-ascend,
	      alpha-descend, numeric-ascend, or numeric-descend.  If the special weighted method is specified, a secondary sort-method may also be
	      specified. It is an error to specify an alphanumeric sort-method for an attribute with Integer or NumericString syntax, and it is an
	      error to specify a numeric sort-method for an attribute with a syntax other than Integer or NumericString.

EXAMPLES

	    database bdb
	    suffix dc=example,dc=com
	    ...
	    overlay valsort
	    valsort-attr member ou=groups,dc=example,dc=com alpha-ascend

FILES

       /etc/openldap/slapd.conf
	      default slapd configuration file

SEE ALSO

       slapd.conf(5), slapd-config(5).

ACKNOWLEDGEMENTS

       This module was written in 2005 by Howard Chu of Symas Corporation. The work was sponsored by Stanford University.

OpenLDAP 2.4.28 						    2011/11/24							  SLAPO-VALSORT(5)
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