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    SIGNALS

          The  signals  listed  below  may  be available for use with kill.  When
          known constant, numbers and default behavior are shown.
    
          Name     Num   Action    Description
          ()                                                                          ()
    
          0          0   n/a       exit code indicates if a signal may be sent
          ALRM      14   exit
          HUP        1   exit
          INT        2   exit
          KILL       9   exit      this signal may not be blocked
          PIPE      13   exit
          POLL           exit
          PROF           exit
          TERM      15   exit
          USR1           exit
          USR2           exit
          VTALRM         exit
          STKFLT         exit      may not be implemented
          PWR            ignore    may exit on some systems
          WINCH          ignore
          CHLD           ignore
          URG            ignore
          TSTP           stop      may interact with the shell
          TTIN           stop      may interact with the shell
          TTOU           stop      may interact with the shell
          STOP           stop      this signal may not be blocked
          CONT           restart   continue if stopped, otherwise ignore
          ABRT       6   core
          FPE        8   core
          ILL        4   core
          QUIT       3   core
          SEGV      11   core
          TRAP       5   core
          SYS            core      may not be implemented
          EMT            core      may not be implemented
          BUS            core      core dump may fail
    
          XCPU           core      core dump may fail
          XFSZ           core      core dump may fail
    


    Mostly used in real life are 15 (default), 1 (allowing cleanup) and 9 (as last resort). But read here why you should avoid 9 if possible: Useless use of kill -9. Its better to try in this order and only use the next if the previous failed: 15 (TERM) -> 2 (INT) -> 1 (HUP) -> 9 (KILL).

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    Recent changes

  • MattisManzel • 21 hours ago
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