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Top Forums UNIX for Dummies Questions & Answers Error handling for sort command Post 302751225 by Don Cragun on Thursday 3rd of January 2013 12:43:51 PM
Old 01-03-2013
Quote:
Originally Posted by mehulleo
... ... ...

sort -k 1.10,1.20n -o $inputfile $outputfile 2>> error_log

... ... ...
Sorry I didn't notice when I posted my last message ...

Note that you are asking sort to the read data from $outputfile and to write the sorted results to the file named by $inputfile. This seems backwards???

PS I'm afraid that the &>> redirection suggested by Ikaro0 won't help and won't do what I think he thinks it will do. The command:
Code:
sort ... &>>  error_log

will run sort in the background and create an empty file named error_log (if error_log didn't already exist). Output from sort will not go into error_log from this command, even if the sort -o option is not been specified.
 

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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 2.4.21 2009/12/20 SLAPO-VALSORT(5)
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