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Top Forums Shell Programming and Scripting Sorting with non- and alphanumeric characters Post 302353496 by fed.m.ang on Tuesday 15th of September 2009 12:38:31 PM
Old 09-15-2009
Question Sorting with non- and alphanumeric characters

Hi guys, I'm new to this forum and I'm not a UNIX expert. I can't figure out this certain problem i'm having:

I need to sort some words, some of the words are annotations (enclosed within < and >). I need to have them sorted alphabetically with all non-alphanumeric characters up front. For example:


I want it to become:
and so on...

I've tried different options written on the man page for sort (like numeric and general-numeric sorting) but any of those just doesn't do what I want. What happens is that they all ignore the < and > signs. Please help me.

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

slapo-valsort - Value Sorting overlay to slapd SYNOPSIS
/etc/ldap/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/ldap/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 2012/04/23 SLAPO-VALSORT(5)

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