@command('<STR_LIT>')<EOL>def backup(target_file, config=None):
storm_ = get_storm_instance(config)<EOL>try:<EOL><INDENT>storm_.backup(target_file)<EOL><DEDENT>except Exception as error:<EOL><INDENT>print(get_formatted_message(str(error), '<STR_LIT:error>'), file=sys.stderr)<EOL>sys.exit(<NUM_LIT:1>)<EOL><DEDENT>
Backups the main ssh configuration into target file.