local fs=require("filesystem")
local shell=require("shell")

local args,ops=shell.parse(...)
if#args==0 then
table.insert(args,".")
end

local arg=args[1]
local path=shell.resolve(arg)

if ops.help then
io.write([[Usage: list [path]
  path:
    optional argument (defaults to ./)
  Displays a list of files in the given path with no added formatting
  Intended for low memory systems
]])
return 0
end

local real,why=fs.realPath(path)
if real and not fs.exists(real)then
why="no such file or directory"
end
if why then
io.stderr:write(string.format("cannot access '%s': %s",arg,tostring(why)))
return 1
end

for item in fs.list(real)do
io.write(item,'\n')
end