TLDR
Enter a command. For example: cryptcat, tcpkill, ldconfig, ip rule.

at

 
Executes commands at a specified time. More information: https://man.archlinux.org/man/at.1.
 
  • Open an at prompt to create a new set of scheduled commands, press Ctrl + D to save and exit:
     
    at {{hh:mm}}
     
  • Execute the commands and email the result using a local mailing program such as Sendmail:
     
    at {{hh:mm}} -m
     
  • Execute a script at the given time:
     
    at {{hh:mm}} -f {{path/to/file}}
     
  • Display a system notification at 11pm on February 18th:
     
    echo "notify-send '{{Wake up!}}'" | at {{11pm}} {{Feb 18}}

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