lua运行带有参数的shell命令不起作用 [英] lua run a shell command with parameters doesn't work

问题描述

我正在尝试从lua脚本执行命令.该命令是简单地运行名为"sha_compare.py"的python脚本.其中的三个参数接受lua脚本中的变量-dady_data和sha:

I am trying to execute a command from lua script. The command is to simply run a python script named "sha_compare.py" of which receives 3 arguments where two of them are variables from the lua script - dady_data and sha:

local method = ngx.var.request_method
local headers = ngx.req.get_headers()

if method == "POST" then
   ngx.req.read_body()
   local body_data = ngx.req.get_body_data()
   local sha = headers['X-Hub-Signature-256']
   ngx.print(os.execute("python3 sha_compare.py"..sha..body_data))
else

由于我调用参数的方式，脚本失败.如果我要从cmd运行它，实际的命令应该是这样的:

The script fails because of the way I call the arguments. The actual command if I would have ran it from cmd would have been something like:

python3 python3 sha_compare.py sha256=ffs8df aaaaa

请告诉我如何更改代码以正确地调用带有3个变量的python脚本.

Please tell me how should I change my code to call the python script with 3 vars properly.

如果不可能或很难实现，请告诉我如何调用将接收这三个参数的.sh脚本.

If it is not possible or hard to implement, please let me know how can I call a .sh script which will receive those 3 params.

推荐答案

您没有在参数之间提供空格:您正在尝试执行

You're not providing spaces between the arguments: you're trying to execute

python3 sha_compare.pysha256=ffs8dfaaaaa

执行此操作:

os.execute("python3 sha_compare.py "..sha.." "..body_data)

通常将命令构建为表格并与执行连接起来更为容易:

It's often easier to build the command up as a table, and the concat it for execution:

local cmd = { 'python3', 'sha_compare.py', sha, body_data }
os.execute(table.concat(cmd, " "))

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