Linux process monitoring commands

 



Kill a process on a port: sudo kill -9 $(sudo lsof -t -i:#port-no)


top: Provides a list of all the active processes in the machine, refreshes every 5s


vmstat: Displays statistics for virtual memory, the kernel, the number of threads, CPU activity, interrupts, the swap, etc.


lsof: List of open files, it is a command line utility that is used to list the information about the files that are opened by various processes. In Linux, everything is a file, ( pipes, sockets, directories, devices, etc.). So by using lsof, you can get the information about any opened files.


netstat: Netstat command displays various network-related information such as network connections, routing tables, interface statistics, masquerade connections, multicast memberships etc.


netstat -a | more:  List all ports using netstat -a


netstat -at: List all tcp ports using netstat


netstat -ud:  List all udp ports using netstat


iostat: The iostat command in Linux is used for monitoring system input/output statistics for devices and partitions. It monitors system input/output by observing the time the devices are active in relation to their average transfer rates.













Comments

Post a Comment

Popular posts from this blog

Get first non-repeating Letter

import java.util.HashMap ; import java.util.LinkedHashMap ; import java.util.Map ; import java.util.HashMap ; import java.util.LinkedHashMap ; import java.util.Map ; public class Check { public static String firstNonRepeatingLetter ( String str) { String val= null ; char [] var =str.toCharArray(); LinkedHashMap < Character , Integer > map = new LinkedHashMap<>(); for ( int i= 0 ;i< var . length ;i++){ if ( map .containsKey( var [i])){ map .put( var [i], map .get( var [i])+ 1 );} else { map .put( var [i], 1 ); } } for ( Map . Entry < Character , Integer > entry : map .entrySet()){ if ( entry .getValue()== 1 ) { val = Character . toString ( entry .getKey()); break ; } } return val; } public static void main ( String [] args) { System . out .println( firstNonRepea...
Read more

Cypress run command

To run particular test spec file  node_modules/.bin/cypress run -s "cypress/integration/examples/Test1.js" To run all the test present under cypress folder node_modules/.bin/cypress run  To open cypress test runner UI node_modules/.bin/cypress open To execute cypress test in particular browser (by default cypress run in headless mode) node_modules/.bin/cypress run --browser {browserName}
Read more

Docker commands

List all images in docker-engine docker ps -a Delete image from the local image store docker image rm alpine:3.4 Run a container from the Alpine docker container run --name web -p 5000:80 alpine:3.9 Stop a running container through SIGTERM docker container stop web Stop a running container through SIGKILL docker container kill web List the running containers  docker container ls Print the last 100 lines of a container’s logs docker container logs --tail 100 web(container name) List the networks docker network ls   
Read more