Validate XML file in LINUX

xmllint --noout your_test_file.xml

Example 1 -

$xmllint --noout silent.xml
silent.xml:53: parser error : XML declaration allowed only at the start of the document
<?xml version="1.0" encoding="UTF-8"?>
     ^

Example 2 -

xmllint --valid --encode utf-8 silent.xml
silent.xml:53: parser error : XML declaration allowed only at the start of the document
<?xml version="1.0" encoding="UTF-8"?>

- Srikanth Govada