xml
XMLStarlet Toolkit: Query, edit, check, convert and transform XML documents.
TLDR
Display general help, including the list of subcommands
$ xml --help
Execute a subcommand with input from a file or URI, printing to stdout
$ xml [subcommand] [options] [path/to/input.xml|URI]
Execute a subcommand using stdin and stdout
$ xml [subcommand] [options]
Execute a subcommand with input from a file or URI and output to a file
$ xml [subcommand] [options] [path/to/input.xml|URI] > [path/to/output]
Display help for a subcommand
$ xml [subcommand] --help
Display the version of the XMLStarlet Toolkit
$ xml --version