test out

_ENV====================================
_G======================================
package "table"
string  "table"
io      "table"
_OSVERSION      "string"
select  "function"
error   "function"
rawequal        "function"
checkArg        "function"
rawset  "function"
tostring        "function"
setmetatable    "function"
require "function"
utf8    "table"
debug   "table"
os      "table"
table   "table"
runlevel        "number"
rawlen  "function"
assert  "function"
dofile  "function"
_G      "table"
xpcall  "function"
pairs   "function"
load    "function"
loadfile        "function"
print   "function"
_VERSION        "string"
pcall   "function"
ipairs  "function"
coroutine       "table"
next    "function"
type    "function"
math    "table"
tonumber        "function"
rawget  "function"
getmetatable    "function"
debug.getinfo()=========================
0 :
        what    "C"
        lastlinedefined "-1"
        nups    "0"
        istailcall      "false"
        short_src       "[C]"
        nparams "0"
        linedefined     "-1"
        currentline     "-1"
        name    "getinfo"
        isvararg        "true"
        source  "=[C]"
        namewhat        "field"
1 :
        what    "Lua"
        lastlinedefined "992"
        nups    "1"
        istailcall      "false"
        short_src       "machine"
        nparams "0"
        linedefined     "973"
        currentline     "974"
        name    "getinfo"
        isvararg        "true"
        source  "=machine"
        namewhat        "field"
2 :
        what    "main"
        lastlinedefined "0"
        nups    "1"
        istailcall      "true"
        short_src       "/home/test.lua"
        nparams "0"
        linedefined     "0"
        currentline     "21"
        isvararg        "true"
        source  "=/home/test.lua"
        namewhat        ""
3 :
        what    "C"
        lastlinedefined "-1"
        nups    "0"
        istailcall      "false"
        short_src       "[C]"
        nparams "0"
        linedefined     "-1"
        currentline     "-1"
        name    "xpcall"
        isvararg        "true"
        source  "=[C]"
        namewhat        "global"
4 :
        what    "Lua"
        lastlinedefined "813"
        nups    "4"
        istailcall      "false"
        short_src       "machine"
        nparams "2"
        linedefined     "796"
        currentline     "799"
        name    "xpcall"
        isvararg        "true"
        source  "=machine"
        namewhat        "global"
5 :
        what    "Lua"
        lastlinedefined "86"
        nups    "5"
        istailcall      "false"
        short_src       "/lib/process.lua"
        nparams "0"
        linedefined     "59"
        currentline     "63"
        isvararg        "true"
        source  "=/lib/process.lua"
        namewhat        ""
debug.getlocal()========================
1       "{\"shell\",n=1}"
2       "{\"s\",n=1}"
3       "{\"a\",n=1}"
4       "{\"o\",n=1}"
5       "{\"t\",n=1}"
6       "{\"tt\",n=1}"
7       "{\"f\",n=1}"
8       "{\"l\",n=1}"
9       "{\"i\",n=1}"