title: at: how to schedule a job to run at one second later?
body: <p>I want to use the command "at" to schedule a job to run at one second (or minute/hour) later. If using "-t" option, then it involves with the hassle of getting the current time etc. Is there any easy way out?</p>
  
  <p>But don't suggest me to use "sleep", because the current process will exit.</p>
  
  <p>Thanks for the tip.</p>