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script to extract PID

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# 1  
Old 09-12-2012
script to extract PID
Can anyone explain the below script which is used to extract the PID?
Why they are taking from 10 character and getting the sub string?

Note:variable pid has been assigned the PID value initially as below.
pid=`sed 's@FILNAME@'$destFil'@g' $scriptname |sed 's@SRCFILE@'$sourceFil'@g' |sed 's@CDNODE@'$CdNod'@g' |sed 's@TEMPL@'$FIL_LOCAT'@g'|sed 's@INDIC@'$acc_id'@g' | $CDCMND -r | grep "_CDPNUM_"`



len1=`expr length "$pid"`
len2=`expr $len1 - 9`
pid=`expr substr "$pid" 10 $len2`
Last edited by bk_12345; 09-12-2012 at 09:19 AM..
# 2  
Old 09-12-2012
The reason behind is simple... Here you are trying to capture the PID of a Connect Direct process (CD) so your pid will have something like below

Code:
 
_CDPNUM_ xxxxxx

as you can see _CDPNUM_<space> makes up 9 character so you have to take the actual pid from 10 onwards Smilie
# 3  
Old 09-12-2012
thank you moderator
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