#!/bin/ksh
FILE_NAME="/tmp/t.xml"
LINE="<moid>ManagedElement=1,Equipment=1,Subrack=MAIN,Slot=3,PlugInUnit=1</moid>"
COUNTER_VALUE=`grep -A4 $LINE $FILE_NAME | sed -e '/-/,$d' | grep '<r>`

sed   "1i$COUNTER_VALUE" $FILE_NAME

aaa[678] /tmp$ ksh -x ./t.ksh
+ FILE_NAME=/tmp/t.xml
+ LINE='<moid>ManagedElement=1,Equipment=1,Subrack=MAIN,Slot=3,PlugInUnit=1</moid>'
+ grep -A4 '<moid>ManagedElement=1,Equipment=1,Subrack=MAIN,Slot=3,PlugInUnit=1</moid>' /tmp/t.xml
+ grep '<r>'
+ sed -e '/-/,$d'
+ COUNTER_VALUE=$'<r></r>n<r></r>'
+ echo $'<r></r>n<r></r>'
+ COUNTER_VALUE=$'<r></r>n<r></r>'
+ sed $'1i<r></r>n<r></r>' /tmp/t.xml
sed: -e expression #1, char 11: unknown command: `<'

<gp>900</gp>
<mt>pmSwitchIngressDiscards</mt>
<mt>pmSwitchIngressLoad</mt>
<mv>
<moid>ManagedElement=1,Equipment=1,Subrack=MAIN,Slot=3,PlugInUnit=1</moid>
<r></r>
<r></r>
</mv>
<mv>