127.0.0.1:6379> FUNCTION LOAD Lua mylib desc noop "redis.register_function('myfunc', function(keys, args) return args[1] end)"
(error) ERR Unknown option given: desc

127.0.0.1:6379> function help
 1) FUNCTION <subcommand> [<arg> [value] [opt] ...]. Subcommands are:
 2) LOAD <ENGINE NAME> <LIBRARY NAME> [REPLACE] [DESC <LIBRARY DESCRIPTION>] <LIBRARY CODE>
 3)     Create a new library with the given library name and code.
 4) DELETE <LIBRARY NAME>
 5)     Delete the given library.
 6) LIST [LIBRARYNAME PATTERN] [WITHCODE]
 7)     Return general information on all the libraries:
 8)     * Library name
 9)     * The engine used to run the Library
10)     * Library description
11)     * Functions list
12)     * Library code (if WITHCODE is given)
13)     It also possible to get only function that matches a pattern using LIBRARYNAME argument.
14) STATS
15)     Return information about the current function running:
16)     * Function name
17)     * Command used to run the function
18)     * Duration in MS that the function is running
19)     If no function is running, return nil
20)     In addition, returns a list of available engines.
21) KILL
22)     Kill the current running function.
23) FLUSH [ASYNC|SYNC]
24)     Delete all the libraries.
25)     When called without the optional mode argument, the behavior is determined by the
26)     lazyfree-lazy-user-flush configuration directive. Valid modes are:
27)     * ASYNC: Asynchronously flush the libraries.
28)     * SYNC: Synchronously flush the libraries.
29) DUMP
30)     Returns a serialized payload representing the current libraries, can be restored using FUNCTION RESTORE command
31) RESTORE <PAYLOAD> [FLUSH|APPEND|REPLACE]
32)     Restore the libraries represented by the given payload, it is possible to give a restore policy to
33)     control how to handle existing libraries (default APPEND):
34)     * FLUSH: delete all existing libraries.
35)     * APPEND: appends the restored libraries to the existing libraries. On collision, abort.
36)     * REPLACE: appends the restored libraries to the existing libraries, On collision, replace the old
37)       libraries with the new libraries (notice that even on this option there is a chance of failure
38)       in case of functions name collision with another library).
39) HELP
40)     Prints this help.