unix - scan root directory using scandir -

i trying use scandir function scan root directory using lua. if use below code other directory works well. scans directory , returns files present.

directory="//home//" function scandir(directory)     local i, t, popen = 0, {}, io.popen     filename in popen('ls -a "'..directory..'"'):lines()         = + 1         t[i] = filename--loop populates array scanned files     end     print(unpack(t))     return t--t contains scanned files  end  scandir(directory) 

i have few files under

user@user:~/.program$ ls  file1 file2  

how set path in directory such scans root dir access file1 , file2??

you don't escape forward slash / in strings. scan /home, use:

directory = "/home" 

the root directly represented single slash:

directory = "/"