在Lua中，可以使用io库来进行文件读写操作。以下是一些常用的文件读写操作示例：
local file = io.open("file.txt", "r")
if file then
local content = file:read("*a")
print(content)
file:close()
else
print("Error: Unable to open file")
end
local file = io.open("file.txt", "w")
if file then
file:write("Hello, world!")
file:close()
else
print("Error: Unable to open file")
end
local file = io.open("file.txt", "a")
if file then
file:write("\nThis is a new line")
file:close()
else
print("Error: Unable to open file")
end
在进行文件读写操作时，需要确保文件的读写权限并在操作完成后关闭文件流。
