File.lutime sets the access and modification time of each file
File.lutime uses the current times if two nil values are passed
File.lutime accepts an object that has a #to_path method
File.lutime accepts an object that has a #to_path method
File.lutime accepts numeric atime and mtime arguments
File.lutime may set nanosecond precision
File.lutime returns the number of filenames in the arguments
File.lutime sets the access and modification time for a regular file
File.lutime sets the access and modification time for a symlink
File.open opens a file that no exists when use File::TRUNC mode
File.open truncates the file when passed File::TRUNC mode
File.open can't read in a block when call open with File::TRUNC mode
File.open can't write in a block when call open with File::TRUNC mode
File.open raises an Errno::EEXIST if the file exists when open with File::RDONLY|File::TRUNC
File::Stat#sticky? returns true if the named file has the sticky bit, otherwise false
File.sticky? returns true if the named file has the sticky bit, otherwise false
FileTest.sticky? returns true if the named file has the sticky bit, otherwise false