linux grep process by name/by id and kill example, and grep -v example

Query the name of the running process, usually requires the linux ps command, linux netstat command, linux awk command and the linux grep command.

grep process by name

➜ ps -ef | grep nginx

grep process by port

➜  grep netstat -an | grep "\*\.8080"

grep process id and kill

➜ ps -ef | grep "tail"  | grep -v grep | awk -F" " 'system("kill  "$2"")'

Command interpretation:

step 1. Show the process you want to kill and exclude the grep command.

➜ ps -ef | grep "tail"  | grep -v grep

step 2. Get the process pid you want to kill.

➜  grep ps -ef | grep "tail -f"  | grep -v grep | awk -F" " '{print $2}'

step 3. Kill the process with awk system.

➜ ps -ef | grep "tail"  | grep -v grep | awk -F" " 'system("kill  "$2"")'