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Using awk to kill a process


 
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# 1  
Old 10-01-2015
Using awk to kill a process

Hi Guys
I am running a small script to find a process id , ask user if they want to kill the process and then action it Yes or no

Here is what i have

Code:
#/bin/bash


ps -l | grep -i $1 | awk '{print "Process id of '$1' is "$4""}' 

echo "Do you want to kill this process (Y/N)"
read action

if [ $action = "Y" ]
	then
	kill  $4
		elif [ $action = "N" ]
		then
		echo "Ok, thanks for using the program"
		exit 0
fi

Having small problem with the $4 as outisde of the awk command, the $4 means nothing. Is there any way to can take $4 into the if else command to kill it ?

usage for example is ./script gedit
It gives me back the process id of gedit ok but its after that i need a little help
# 2  
Old 10-01-2015
Why do you use awk for that?
# 3  
Old 10-01-2015
using awk as i just want to get familiar with the command
# 4  
Old 10-01-2015
Try
Code:
read PID CMD <<< $(ps -eopid,command|grep [g]edit)

# 5  
Old 10-01-2015
I want to use the awk command like in my above script
# 6  
Old 10-01-2015
Hello

Allthough awk's first output column ($1) matches what you have passed $1, it is NOT the same.
One is a shell variable, and one is a column ID.

You can pass a variable to AWK, with awk -v VAR=value ..., however, this is only to pass a shell variable into awk.
You might catch the awk output into a shell variable, and compare that for further shell actions.

You do need to catch the proccess id (pid) of the passed argument ($1) into a new variable, and 'kill that'..
Code:
value=$(ps -l | grep -i $1 | awk '{print $4}')

hth
This User Gave Thanks to sea For This Post:
# 7  
Old 10-01-2015
You do need to catch the proccess id (pid) of the passed argument ($1) into a new variable, and 'kill that'..

How can i catch the process id of the passed arguement ? I just need to awk for the print command to print the pid of the arguement

---------- Post updated at 07:39 AM ---------- Previous update was at 07:15 AM ----------

thanks
got this working with

Code:
#/bin/bash

ps -l | grep -i $1 | awk '{print "Process id of '$1' is "$4""}' > output.txt

output="output.txt"


pid=$(cat "$output" | cut -d ' ' -f6)


echo "Do you want to kill this process (Y/N)"
read action

if [ $action = "Y" ]
	then
	kill  $pid
		elif [ $action = "N" ]
		then
		echo "Ok, thanks for using the program"
		exit 0
fi


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