How To Abide By Together With Kill A Procedure Listening On A Port Inwards Linux? Netstat Together With Lsof Ascendance Examples

In Linux, many times, you lot desire to find out the PID of a procedure which is listening on a port e.g. if multiple tomcat servers are running on a host together with you lot lead keep to kill that process, but inwards enterprise to kill that procedure you lot request the procedure id, how create you lot uncovering the PID of the tomcat listening on port 8080? There are many Linux commands to uncovering the procedure using a specific port, but I'll percentage what I use. I e'er utilisation the netstat ascendency alongside -p option, which displays procedure id of the procedure listening on a port. Btw, netstat is non the exclusively ascendency to find all processes using a detail port, you lot tin besides utilisation the lsof command for the same purpose.

If you lot remember, nosotros lead keep used lsof before to uncovering all the processes accessing a file but it tin besides endure used to uncovering all processes accessing a specific port.

You volition run across the event of both netstat and lsof commands inwards this article to uncovering the PID of procedure listening on a specific port inwards Linux.

On the related note, it's real of import for a Java developer to larn nearly the Linux operating organization together with commands. The to a greater extent than you lot know nearly the Linux Operating organization together with dissimilar crunch e.g. bash, csh or ksh, the improve you lot tin back upwards your Java application.

That's why it's of import to bring together a course of written report like Linux Command Line Basics, which provides an splendid introduction of essential crunch commands inwards Linux. It volition non exclusively assistance you lot to larn nearly telephone substitution of Linux OS but besides all of import commands you lot request to locomote efficiently inwards Linux.

Netstat ascendency to uncovering the PID of procedure listening on a port

So to uncovering the PID of your Java server listening on port 8080, you lot tin utilisation the next Linux command:

$ netstat -nap | grep 8080 (Not all processes could endure identified, non-owned procedure information volition non endure shown, you lot would lead keep to endure root to run across it all.) tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN 25414/java

hither you lot go, 25414 is the PID  or procedure id of your tomcat server. Since tomcat is a Java spider web application it started alongside java ascendency together with that's why you lot run across 25414/java.

Remember, if you lot are non logged inwards equally root or the user nether which your server is running, you lot mightiness run across next error:

No information could endure read for "-p": geteuid()=XXX but you lot should endure root

If you lot run across this error, hence but sudo equally the user which is running the tomcat. If you lot know how Linux works, then you lot tin solve this fault pretty rapidly but if you lot don't hence you lot volition lead keep a difficult time.

lsof ascendency event to uncovering the processes using a specific port

Here is the event of the lsof command to listing the procedure listening on a port.

$ lsof -i :8080 COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME coffee 25414 appuser 44u IPv4 3733348 TCP *:XXX (LISTEN)

but recollect to -i option together with colon (:) before the port like: 8080.

Btw, if you lot don't uncovering the lsof command inwards your PATH, search inwards /usr/sbin, to a greater extent than ofttimes /usr/sbin is non added into user's PATH. In that you lot tin run the ascendency equally shown below:

$ /usr/sbin/lsof -i :8080 COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME coffee 25414 appuser 44u IPv4 3733348 TCP *:XXX (LISTEN)

It volition display the same result.

Btw, if you lot similar the lsof ascendency together with interested inwards learning its other application, you lot should banking concern lucifer my post service 10 ways to utilisation the lsof ascendency inwards Linux. You tin besides lead keep a expect at below diagram yesteryear Julia Evans which effectively summarise the diverse options of lsof ascendency inwards Linux:

Summary

Here is the summary of how to uncovering the procedure listening on a detail port inwards UNIX:

grep, fifty-fifty if you lot but plow over PID it volition fetch the draw of piece of employment from netstat output hence I tin acquire the port on which a detail procedure is listening. Anyway, I volition demo you lot a brace of to a greater extent than tricks to uncovering the port on which a detail port is listening inwards adjacent tutorial.

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Thanks for reading this article hence far. If you lot similar this Linux tutorial together with uncovering the information useful delight percentage alongside your friends together with colleagues. If you lot lead keep whatsoever questions or feedback hence delight drib a note.

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