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Top Forums Shell Programming and Scripting Warning in Top 10 cpu consuming processes Post 302444209 by pinga123 on Wednesday 11th of August 2010 07:31:59 AM
Old 08-11-2010
Thanks you all for your reply .But i found it little strange as For giving an option to a command i normally use a hyphen "-" Why this is not the case with ps?
Is this a kind of bug?
 

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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)
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