Manual:File System Functions
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File System Functions
A collection of functions for interacting with the file system.
io.exists
- io.exists(path)
- Checks to see if a given file or folder exists.
- If it exists, it’ll return the Lua true boolean value, otherwise false.
- See lfs.attributes() for a cross-platform solution.
- Example
-- This example works on Linux only
if io.exists("/home/vadi/Desktop") then
echo("This folder exists!")
else
echo("This folder doesn't exist.")
end
-- This example will work on both Windows and Linux.
if io.exists("/home/vadi/Desktop/file.tx") then
echo("This file exists!")
else
echo("This file doesn't exist.")
end
lfs.attributes
- infoTable = lfs.attributes(path)
- Returns a table with detailed information regarding a file or directory, or nil if path is invalid / file or folder does not exist.
- Example
fileInfo = lfs.attributes("/path/to/file_or_directory")
if fileInfo then
if fileInfo.mode == "directory" then
echo("Path points to a directory.")
elseif fileInfo.mode == "file" then
echo("Path points to a file.")
else
echo("Path points to: "..fileInfo.mode)
end
display(fileInfo) -- to see the detailed information
else
echo("The path is invalid (file/directory doesn't exist)")
end