xmlstarlet sel -t -v '//email' demofilename.xml

myfilepath=/root/demofilename.xml
xmlstarlet sel -t -v '//email' $myfilepath

*Wherever file name mentioned in command help it is assumed
that URL can be used instead as well.

Type: xmlstarlet <command> --help <ENTER> for command help*


xmlstarlet --version
1.6.1
compiled against libxml2 2.9.4, linked with 20904
compiled against libxslt 1.1.29, linked with 10129