package validate const helpString = ` Usage: packer validate [options] TEMPLATE Checks the template is valid by parsing the template and also checking the configuration with the various builders, provisioners, etc. If it is not valid, the errors will be shown and the command will exit with a non-zero exit status. If it is valid, it will exit with a zero exit status. Options: -syntax-only Only check syntax. Do not verify config of the template. -except=foo,bar,baz Validate all builds other than these -only=foo,bar,baz Validate only these builds -var 'key=value' Variable for templates, can be used multiple times. `