XML formatting Indentation Tags Matching - Linux
xmllint --format <your-xml-file>example
$ cat test.xml<a><b>c</b></a>$ xmllint --format test.xml<a> <b>c</b></a>$ xmllint --format test.xml > test.formatted.xml$ cat test.formatted.xml<a> <b>c</b></a>$
tidy -xml -i -q-xml - specify the input is well formed XML
-q - suppress nonessential output
-i - indent element content
tidy can work with files and stdin/stdout
echo '<a><b>c</b></a>' | tidy -xml -i -qwill produce
<a> <b>c</b> </a>