Add data to XML element within bash script -

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i have following xml :

<remote host="${jboss.domain.master.address:127.0.0.1}"     port="${jboss.domain.master.port:9999}"  security-realm="managementrealm" />

i want add username=admin line block. whats best way of going this. have tried every sed combination , have been getting nowehere...

recommend against it, but:

xml=$( sed 's# /># username="admin"&#' <<< "$xml" )

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