Kill -9 -1 combination


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# 8  
Some OSes - like AIX - by default do not have a pkill command Smilie Someone might have installed it from somewhere but its not native so do not assume it exists on your host.

If you are logged in as the user med, and you want everything down that this user runs, kill -9 -1 is a pretty safe method. But only run it when the application stop script left things running. So wait a few min after stopping the app to run the command.
Please note that if you have zombie processes left over (app processes that are owned by 1), this command will still not kill them. Only a system reboot will.
If you have to restart your app often, its better to find out what is preventing your processes from terminating cleanly than to kill those leftover processes.
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# 9  
The OS is Linux, as stated in post #5.
Linux distros have got pgrep/pkill soon after Sun introduced them on Solaris. They were pretty welcome because the traditional Linux commands pidof/killall got distro-specific options.
Also HP-UX 11.31 got pgrep/pkill. (When will AIX tune in?)

Regarding kill, I second RudiC that you must consult the shell's man page to ensure that its kill builtin supports -1

And yes, a kill -9 is a last resort, if the only alternative is a system reboot. It might leave shared memory, semaphores, temporary files, etc. behind.
# 10  
Good afternoon


I used the command to kill 3004 prcesseses but it kill somme processees my own session bu processes realted to a shell called CHECK_PORT_PROCESS_MAIN.sh could get killed

Code:
pkill -u perm_adm && sleep 5 && pkill -9 -u perm_adm

Code:
root@proermpaymweb02 app]# ps -ef | grep CHECK_PORT_PROCESS_MAIN.sh | wc -l

3004

[root@proermpaymweb02 app]# ps -ef | grep CHECK_PORT_PROCESS_MAIN.sh | head -100

perm_ad+   308  8009  0 05:53 ?        00:00:00 /bin/bash /app/perm/backend/check_port_process/CHECK_PORT_PROCESS_MAIN.sh

perm_ad+   313  8009  0 03:31 ?        00:00:00 /bin/bash /app/perm/backend/check_port_process/CHECK_PORT_PROCESS_MAIN.sh

perm_ad+   326  8009  0 05:53 ?        00:00:00 /bin/bash /app/perm/backend/check_port_process/CHECK_PORT_PROCESS_MAIN.sh

perm_ad+   340  8009  0 03:31 ?        00:00:00 /bin/bash /app/perm/backend/check_port_process/CHECK_PORT_PROCESS_MAIN.sh

perm_ad+   341  8009  0 05:53 ?        00:00:00 /bin/bash /app/perm/backend/check_port_process/CHECK_PORT_PROCESS_MAIN.sh

perm_ad+   359  8009  0 03:32 ?        00:00:00 /bin/bash /app/perm/backend/check_port_process/CHECK_PORT_PROCESS_MAIN.sh

perm_ad+   375  8009  0 05:53 ?        00:00:00 /bin/bash /app/perm/backend/check_port_process/CHECK_PORT_PROCESS_MAIN.sh

[/CODE]

This shell runs every 5 minutes but lastly it gets stuck and fills up the server the server with a huge amount of processes most of them with CHECK_PORT_PROCESS script

So The system Administrator can not kill these processes and He/she had to Restart the server many times

I appreciate your help in advanced
# 11  
Looks like a broken /app/perm/backend/check_port_process/CHECK_PORT_PROCESS_MAIN.sh script.
Can you post content of that script perhaps ?

Script hangs due to some condition, one should debug it.

Hope that helps
Regards
Peasant.
# 12  
Give the process name! The short name is bash but with -f it takes the full name or a part of it.
Code:
pkill -u perm_adm -f CHECK_PORT_PROCESS_MAIN.sh && sleep 5 && pkill -9 -u perm_adm -f CHECK_PORT_PROCESS_MAIN.sh

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