instance method · added in Ruby 3.2

IO#path

() -> ::String?

path → string or nil

VALUE
rb_io_path(VALUE io)
{
    rb_io_t *fptr = RFILE(io)->fptr;

    if (!fptr)
        return Qnil;

    return rb_obj_dup(fptr->pathv);
}

Returns the path associated with the IO, or nil if there is no path associated with the IO. It is not guaranteed that the path exists on the filesystem.

Example

$stdin.path # => "<STDIN>"

File.open("testfile") {|f| f.path} # => "testfile"

Ruby version changes

3.2
- Introduce IO.new(..., path:) and promote File#path to IO#path. [Feature #19036]

See also #oflush #pathconf #nonblock? #pid also in 4.1 · 3.4 · 3.3 · 3.2

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