touch Sets access and modification time of file inttouch stringfilename inttime intatime Attempts to set the access and modification time of the file named by filename to the value given by time. If the option time is not given, uses the present time. This is equivalent to what utime (sometimes referred to as utimes) does. If the third option atime is present, the access time of the given filename is also modified. If the file does not exist, it is created. &return.success;