If -exact is specified, matching on key is case-sensitive. By default matching is case-insensitive.
If -bool is specified, ns_config will perform the conversion of a boolean value from "on", "1", "y", "yes", "t", and "true" to "1", and it will convert a boolean value of "off", "0", "n", "no", "f", and "false" to "0". If a boolean contains any other value, a warning is written to the log file and an empty string {"") is returned. If no value is specified in the configuration file for the specified key, an empty string ("") is returned.
If -int is specified, ns_config will return the integer value of the specified key. If there is a non-integer value in the configuration file, a warning is written to the log file and an empty string ("") is returned.