Meaning and typical use of -3 signal in kill Post: 302446553

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killall

killall(8)						      System Manager's Manual							killall(8)

NAME

       killall - Terminates all processes started by the user, except the calling process

SYNOPSIS

       /usr/sbin/killall [- | [-]signal_name | -signal_number]

       /usr/sbin/killall -l

FLAGS

       The  hyphen  character (without an argument) sends a SIGTERM signal initially and then sends a SIGKILL signal to all processes that survive
       for 30 seconds after receipt of the first signal.  This gives processes that catch the SIGTERM signal an opportunity to clean up.  A signal
       name, optionally preceded by a hyphen, sends the specified signal to processes.	The hyphen character (with a signal number argument) sends
       the specified signal, either a name, stripped of the SIG prefix (such as KILL), or a number (such as  9).   For	information  about  signal
       names and numbers, see the signal() system call.

       In  the System V habitat, the optional signal number does not have to be preceded with a hyphen (-).  Lists signal names in numerical order
       (as given in the /usr/include/signal.h file), stripped of the common SIG prefix.

DESCRIPTION

       This command provides a convenient means of killing all processes created by the shell that you control.  When started  by  the	superuser,
       the killall command kills all processes that can be terminated, except those processes that started it, the kernel processes, and processes
       0 and 1 (init).

   Security Configuration
       This command is modified in all security configurations of the system.

EXAMPLES

       To stop all background processes that have started, enter: killall This sends all background processes signal  9  (the  kill  signal,  also
       called  SIGKILL).   To  stop  all  background processes, giving them a chance to clean up, enter: killall - This sends signal 15 (SIGTERM),
       waits 30 seconds, and then sends signal 9 (SIGKILL).  To send a specific signal to the background processes, enter: killall -2  This  sends
       signal  2 (SIGINT) to the background processes.	To list the signal names in numerical order, stripped of the SIG prefix, enter: killall -l
       This displays a list of signals, which may vary from system to system.

FILES

       Specifies the command path

RELATED INFORMATION

       Calls: kill(2), sigaction(2), signal(2) delim off

																	killall(8)