lib/lua/nb.lua

diff --git a/lib/lua/nb.lua b/lib/lua/nb.lua
index 69fba34183bad54602ccf0a87004c0d0690a0b35..da4f721a3199fbe1bc4ccebdc3d23e3fae0227ff 100644 (file)
--- a/lib/lua/nb.lua
+++ b/lib/lua/nb.lua
@@ -93,6 +93,13 @@ function nb:ngx_location_md(fheader,ffooter)
        ngx.exit(0)
 end
 
+function readcmd(cmd)
+       local f = assert(io.popen(cmd, 'r'))
+       local s = assert(f:read('*a'))
+       f:close()
+       return s
+end
+
 function values(t)
   local i = 0
   return function() i = i + 1; return t[i] end