file.write("report.csv", "name,score\nplayer1,10\n")
local content = file.read("report.csv")

file.read(name)

local content, err = file.read("report.csv")
if not content then
  print("не смог прочитать: " .. err)
  return
end

file.write(name, content)

local ok, err = file.write("report.csv", "name,score\n")
if not ok then
  print("не смог записать: " .. err)
end

file.append(name, content)

hook.add("player:death", "myplugin.kills_log", function(e)
  file.append("kills.csv", ("%s,%s\n"):format(e.attacker and e.attacker:name() or "world", e.player:name()))
end)

file.exists(name)

if not file.exists("config.json") then
  file.write("config.json", "{}")
end

file.remove(name)

local ok, err = file.remove("tmp.csv")

file.size(name)

local size = file.size("report.csv")
if size and size > 1024 * 1024 then
  file.remove("report.csv")
end

file.list()

for _, name in ipairs(file.list()) do
  print(name)
end