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	#!/usr/bin/env python3

	# Add commit-revisions option if it doesn't exist

	import sys

	from vyos.configtree import ConfigTree

	if (len(sys.argv) < 1):
	print("Must specify file name!")
	sys.exit(1)

	file_name = sys.argv[1]

	with open(file_name, 'r') as f:
	config_file = f.read()

	config = ConfigTree(config_file)

	if config.exists(['system', 'config-management', 'commit-revisions']):
	# Nothing to do
	sys.exit(0)
	else:
	config.set(['system', 'config-management', 'commit-revisions'], value='200')

	try:
	with open(file_name, 'w') as f:
	f.write(config.to_string())
	except OSError as e:
	print("Failed to save the modified config: {}".format(e))
	sys.exit(1)