$ export PATH=/usr/local/openresty/bin:$PATH

$ which resty
/usr/local/openresty/bin/resty

$ resty -h
resty [options] [lua-file [args]]

Options:
    -c NUM              Set maximal connection count (default: 64).
    -e PROG             Run the inlined Lua code in "prog".

    --errlog-level LEVEL
                        Set nginx error_log level.
                        Can be debug, info, notice, warn, error, crit, alert,
                        or emerg.

    --gdb               Use GDB to run the underlying nginx C process.

    --gdb-opts OPTS     Pass extra command-line options to GDB.

    --help              Print this help.

    --http-conf CONF    Specifies nginx.conf snippet inserted into the http {}
                        configuration block (multiple instances are supported).

    --http-include PATH Include the specified file in the nginx http
                        configuration block (multiple instances are supported).

    -I DIR              Add dir to the search paths for Lua libraries.

    -j dump             Use LuaJIT's jit.dump module to output detailed info of
                        the traces generated by the JIT compiler.

    -j off              Turn off the LuaJIT JIT compiler.

    -j v                Use LuaJIT's jit.v module to output brief info of the
                        traces generated by the JIT compiler.

    -l LIB              Require library "lib".

    --main-conf CONF    Specifies nginx.conf snippet inserted into the nginx
                        main {} configuration block (multiple instances are
                        supported).

    --main-include PATH Include the specified file in the nginx main
                        configuration block (multiple instances are supported).

    --nginx             Specify the nginx path (this option might be removed
                        in the future).

    --no-stream         Disable the stream {} configuration in auto-generated
                        nginx.conf.

    --ns IP             Specify a custom name server (multiple instances are
                        supported).

    --resolve-ipv6      Make the nginx resolver lookup both IPv4 and IPv6
                        addresses.

    --rr                Use Mozilla rr to record the execution of the
                        underlying nginx C process.

    --shdict 'NAME SIZE'
                        Create the specified lua shared dicts in the http
                        configuration block (multiple instances are supported).

    --stap
                        Use sysetmtap to run the underlying nginx C process.

    --stap-opts OPTS
                        Pass extra systemtap command line options.

    -V                  Print version numbers and nginx configurations.

    --valgrind          Use valgrind to run nginx.

    --valgrind-opts OPTS
                        Pass extra options to valgrind.

For bug reporting instructions, please see:

    <https://openresty.org/en/community.html>

Copyright (C) Yichun Zhang (agentzh). All rights reserved.

$ resty -e 'print("hello")'
hello

$ time resty -e 'ngx.sleep(3) print("done\n")'
done

real 0m3.085s
user 0m0.071s
sys 0m0.010s

$ resty -e 'ngx.say(ngx.md5("hello"))'
5d41402abc4b2a76b9719d911017c592

$ resty -e 'io.stderr:write("hello world\n")' > /dev/null
hello world

$ resty mysql-example.lua
connected to mysql.
table cats created.
3 rows inserted into table cats (last insert id: 1)
result: [{"name":"Bob","id":"1"},{"name":"","id":"2"},{"name":null,"id":"3"}]

$ resty -e 'print("got: ", io.stdin:read("*l"))'
hiya
got: hiya

$ time resty -e 'local ths = {}
                 for i = 1, 3 do
                     ths[i] = ngx.thread.spawn(function ()
                                  ngx.sleep(3) ngx.say("done ", i)
                              end)
                 end
                 for i = 1, #ths do ngx.thread.wait(ths[i]) end'
done 1
done 2
done 3

real 0m3.073s
user 0m0.053s
sys 0m0.015s

$ resty -e 'print(arg[1], ", ", arg[2])' hello world
hello, world

$ resty --shdict='dogs 1m' -e 'local dict = ngx.shared.dogs
                               dict:set("Tom", 56)
                               print(dict:get("Tom"))'
56

$ resty -V
resty 0.01
nginx version: openresty/1.7.7.2
built by gcc 4.8.3 20140911 (Red Hat 4.8.3-7) (GCC)
TLS SNI support enabled
configure arguments: --prefix=/usr/local/openresty/nginx ...

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