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kill[!] [signal-number|signal-name]

Kill execution of program being debugged.

Equivalent of kill('KILL', $$). This is an unmaskable signal. Use this when all else fails, e.g. in thread code, use this.

If you are in interactive mode, you are prompted to confirm killing. However when this command is aliased from a command ending in !, no questions are asked.

Examples:

 kill  
 kill KILL # same as above
 kill kill # same as above
 kill -9   # same as above
 kill  9   # same as above
 kill! 9   # same as above, but no questions asked
 kill unconditionally # same as above
 kill TERM # Send "TERM" signal

See also set confirm and quit.