Shell Script to Kill All Processes having Specific Pattern/String in Their Name or Description

 What this script for?

This script kills all running processes having a string/pattern "provided by the user" in their name or description.

This script works only on Linux environment, it won't work on Unix.

When you need such script?

Sometimes when I shut down an Oracle database it goes hung in the middle, in many cases it worth to kill all the connected sessions to the DB from OS to release this hung in many cases, so I kill all the processes having this pattern in their name, suppose that my instance name is ORCL: oracleORCL (LOCAL=NO)

This script helps me to safely and easily do this job. This is just an example of usage, but it can kill any process, not only Oracle ones.

Before going to "How to Use" section, please read the following disclaimer carefully:

THIS SCRIPT IS DISTRIBUTED IN THE HOPE THAT IT WILL BE USEFUL, BUT WITHOUT ANY WARRANTY. IT IS PROVIDED "AS IS".
THE AUTHOR WILL NOT BE HELD RESPONSIBLE TO ANY PERSON OR ENTITY WITH RESPECT TO ANY DATA LOSS OR DAMAGES CAUSED BY THIS SCRIPT.

This script is like any powerful Linux command, you suppose to really know what you are doing, make sure you read the prompted messages and outputs carefully.
Also, it's expected that you already practiced/tested this script on a test environment before using it against production.

How to use:

1- You need to provide the full or partial name of the processes you want to kill.
2- The user you are running this script with should be the owner of the processes to be killed.

# sh KILL_ALL_PROCESSES_MATCHING_STRING_LINUX.sh

Read the Disclaimer and decide whether you want to continue or not, then provide the full or partial name of the processes you want to kill:

 

 The script will list you all the processes to be killed along with their total number. [You must review them all carefully before proceeding to the next step, to make sure the script will kill exactly the processes you want]

 

Once you are 100% sure to kill the listed processes, then go ahead and confirm the killing of those processes:

The script will give you 5 seconds in case you want to change your mind, simply use Ctrl+c to terminate it or leave it to run.

Once the killing is complete, the script will check if any other processes are left having the same pattern:

In case there are processes still left, the script will list them to you, you may need to run the script again to kill them, or you may need to execute the script with the right OS user which owns these processes.

You can download the script from this link:

https://www.dropbox.com/s/60ob48dctotmsx1/KILL_ALL_PROCESSES_MATCHING_STRING_LINUX.sh?dl=0

Or just copy the below content to a file with .sh extension to the machine you want to execute it against:

	# #############################################################################################################################################
	# This script KILLS all linux processes that match specific pattern provided by the user:
	# Ver 1.0
	# # # #
	# Author: Mahmmoud ADEL # # # # ###
	# Created: 08-05-23 # # # # #
	# Modified:
	# #############################################################################################################################################
	# Terminate the Script if the OS is not Linux:
	case `uname` in
	Linux) true;;
	*) echo "This Script works only on Linux OS."; echo "Script Terminated!"; exit;;
	esac
	export SCRIPT_NAME="KILL_ALL_PROCESSES_MATCHING_STRING_LINUX"
	# ##############################
	# PROMPT THE DISCLAIMER MESSAGE:
	# ##############################
	echo ""
	echo -e "\033[32;5mTHIS SCRIPT KILLS ALL THE PROCESSES HAVING THE STRING/PATTERN YOU WILL PROVIDE IN THEIR NAME OR THEIR DESCRIPTION. IT EXPECTS THAT YOU REALLY KNOW WHAT YOU ARE DOING. YOU USE IT AT YOUR OWN RISK DUDE!\033[0m"
	echo ""
	echo "DISCLAIMER: THIS SCRIPT IS DISTRIBUTED IN THE HOPE THAT IT WILL BE USEFUL, BUT WITHOUT ANY WARRANTY. IT IS PROVIDED \"AS IS\"."
	echo "********** THE AUTHOR WILL NOT BE HELD RESPONSIBLE TO ANY PERSON OR ENTITY WITH RESPECT TO ANY DATA LOSS OR DAMAGES CAUSED BY THIS SCRIPT."
	echo ""
	echo "Do you agree to continue? [YES | NO]"
	echo "========================="
	while read DISCLAIMER
	do
	case ${DISCLAIMER} in
	Y|y|yes|YES|Yes) echo; break;;
	N|n|no|NO|No|NE) echo; echo "Nothing wrong with being on the safe side :-)";echo "Please test this script on a test environment first to get more confident with it.";echo "SCRIPT TERMINATED! "; echo; exit;;
	*) echo "Please Enter a valid answer: [YES|NO]";;
	esac
	done
	# #####################################
	# Prompt the user to enter the pattern:
	# #####################################
	echo "Enter the FULL or PARTIAL OS Process Name you want to KILL:"
	echo "==========================================================="
	while read PROCESS_PATTERN
	do
	case ${PROCESS_PATTERN} in
	"") echo "Empty Pattern is NOT allowed. Please Enter a value."; echo;;
	*) export PROCESS_PATTERN; echo; break;;
	esac
	done
	# ##################################################
	# Print all the services having the entered pattern:
	# ##################################################
	echo "The following Processes are subject to be killed by this script ..."
	echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"
	echo ""
	sleep 1
	ps -ef | grep "${PROCESS_PATTERN}" | grep -v grep
	export PROCESS_COUNT1=`ps -ef | grep "${PROCESS_PATTERN}" | grep -v grep|wc -l`
	echo; echo "Number of Processes to be killed is: ${PROCESS_COUNT1}"
	if [[ ${PROCESS_COUNT1} -eq 0 ]]
	then
	echo
	echo "No Processes found having the pattern: ${PROCESS_PATTERN}"
	echo ""
	echo "Script Terminated!"
	echo
	exit
	fi
	# ###########################################
	# KILLING Section:
	# ###########################################
	echo
	echo "ARE YOU SURE YOU WANT TO KILL ALL THE ABOVE LISTED PROCESSES? [YES | NO]"
	echo "============================================================="
	while read CONFIRM_KILL
	do
	case ${CONFIRM_KILL} in
	"YES"|"yes"|"Yes")
	echo ""; echo "Attemping to KILL the above listed processes using kill -9 command within 5 seconds ..."; sleep 5
	ps -ef | grep "${PROCESS_PATTERN}" | grep -v grep | awk '{print $2}' | xargs -r kill -9
	echo ""; echo "Killing attempt Completed!"; echo ""
	echo "Checking if any other processes with pattern [${PROCESS_PATTERN}] are still running ..."
	echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"
	echo ""; sleep 3
	ps -ef | grep "${PROCESS_PATTERN}" | grep -v grep
	export PROCESS_COUNT2=`ps -ef | grep "${PROCESS_PATTERN}" | grep -v grep|wc -l`
	if [[ ${PROCESS_COUNT2} -gt 0 ]]
	then
	echo ""; echo "Number of Processes which are NOT YET KILLED is: ${PROCESS_COUNT2}"
	echo ""
	echo "You may need to execute this script again to kill those processes, or try to execute it again with a privileged user."
	echo "Script Terminated!"
	echo
	exit
	fi
	if [[ ${PROCESS_COUNT2} -eq 0 ]]
	then
	echo "Hooray! ${PROCESS_COUNT1} Process Killed!"
	echo
	echo "No more processes with pattern [${PROCESS_PATTERN}] can be found."
	echo ""
	echo "Script Completed."; echo ""
	fi
	break;;
	"No"|"no"|"NO"|"N"|"n") echo "Script Terminated WITHOUT Doing Any Action!";echo ""; break;;
	*) echo "Please Enter a VALID answer [YES or NO]."; echo;;
	esac
	done
	# #############
	# END OF SCRIPT
	# #############
	# DISCLAIMER: THIS SCRIPT IS DISTRIBUTED IN THE HOPE THAT IT WILL BE USEFUL, BUT WITHOUT ANY WARRANTY. IT IS PROVIDED "AS IS".
	# Do not live under a rock :-) Every month a new version of DBA_BUNDLE get released, download it by visiting:
	# http://dba-tips.blogspot.com/2014/02/oracle-database-administration-scripts.html
	# REPORT BUGS to: mahmmoudadel@hotmail.com

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