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Full Discussion: Error handling for sort command
Top Forums UNIX for Dummies Questions & Answers Error handling for sort command Post 302751215 by Don Cragun on Thursday 3rd of January 2013 12:11:44 PM
Old 01-03-2013
Quote:
Originally Posted by mehulleo
Hey, sorry for the late reply..

i tried with the above approach but it was giving me error something like [555] could not found ! ...
Anyways i went with the below approach and the process was terminating if sort is not working

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

if [[ $pgmcc != 0 ]]
then
echo "FATAL ERROR, TERMINATING NOW"
fi

In this case i'm just getting the error written in error_log as sort: A write error occured while sorting.

But i want to capture error which comes on the console something like below:

vxfs: msgcnt 5980 mesg 001: V-2-1: vx_nospace - /dev/vx/dsk/drd_rootdg/tmpvol file system full (2 block extent)

Is there a way if i can achieve the above...??
No. The vxfs error message is not being written by sort; it is a diagnostic message being written to the console by the operating system. The 2>>errlog will append diagnostics written by sort to errlog, but can't capture messages written to the terminal by the operating system nor by unrelated processes.

Your system probably has a log file where error messages written to the console are saved (but if the filesystem where the log files would be written is full, the message might only appear on the screen). Where those log files are kept is system specific.
 

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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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