In Linux, many times, y'all 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 as well as y'all get got to kill that process, but inward fellowship to kill that procedure y'all necessitate the procedure id, how create y'all notice the PID of the tomcat listening on port 8080? There are many Linux commands to notice the procedure using a specific port, but I'll part what I use. I e'er utilization the netstat dominance amongst -p option, which displays procedure id of the procedure listening on a port. Btw, netstat is non the alone dominance to find all processes using a detail port, y'all tin dismiss too utilization the lsof command for the same purpose.
If y'all remember, nosotros get got used lsof before to notice all the processes accessing a file but it tin dismiss too live on used to notice all processes accessing a specific port.
You volition run across the instance of both netstat and lsof commands inward this article to notice the PID of procedure listening on a specific port inward Linux.
On the related note, it's really of import for a Java developer to acquire virtually the Linux operating arrangement as well as commands. The to a greater extent than y'all know virtually the Linux Operating arrangement as well as dissimilar crunch e.g. bash, csh or ksh, the amend y'all tin dismiss back upwards your Java application.
That's why it's of import to bring together a course of report like Linux Command Line Basics, which provides an fantabulous introduction of essential crunch commands inward Linux. It volition non alone deal y'all to acquire virtually key of Linux OS but too all of import commands y'all necessitate to operate efficiently inward Linux.
hither y'all go, 25414 is the PID or procedure id of your tomcat server. Since tomcat is a Java spider web application it started amongst java dominance as well as that's why y'all run across 25414/java.
Remember, if y'all are non logged inward every bit root or the user nether which your server is running, y'all mightiness run across next error:
No information could live on read for "-p": geteuid()=XXX but y'all should live on root
If y'all run across this error, thence merely sudo every bit the user which is running the tomcat. If y'all know how Linux works, then y'all tin dismiss solve this fault pretty rapidly but if y'all don't thence y'all volition get got a difficult time.
merely shout out back to -i option as well as colon (:) before the port like: 8080.
Btw, if y'all don't notice the lsof command inward your PATH, search inward /usr/sbin, to a greater extent than oft /usr/sbin is non added into user's PATH. In that y'all tin dismiss run the dominance every bit shown below:
It volition display the same result.
Btw, if y'all similar the lsof dominance as well as interested inward learning its other application, y'all should depository fiscal establishment gibe my post service 10 ways to utilization the lsof dominance inward Linux. You tin dismiss too get got a expect at below diagram yesteryear Julia Evans which effectively summarise the diverse options of lsof dominance inward Linux:
If y'all remember, nosotros get got used lsof before to notice all the processes accessing a file but it tin dismiss too live on used to notice all processes accessing a specific port.
You volition run across the instance of both netstat and lsof commands inward this article to notice the PID of procedure listening on a specific port inward Linux.
On the related note, it's really of import for a Java developer to acquire virtually the Linux operating arrangement as well as commands. The to a greater extent than y'all know virtually the Linux Operating arrangement as well as dissimilar crunch e.g. bash, csh or ksh, the amend y'all tin dismiss back upwards your Java application.
That's why it's of import to bring together a course of report like Linux Command Line Basics, which provides an fantabulous introduction of essential crunch commands inward Linux. It volition non alone deal y'all to acquire virtually key of Linux OS but too all of import commands y'all necessitate to operate efficiently inward Linux.
Netstat dominance to notice the PID of procedure listening on a port
So to notice the PID of your Java server listening on port 8080, y'all tin dismiss utilization the next Linux command:$ netstat -nap | grep 8080 (Not all processes could live on identified, non-owned procedure information volition non live on shown, y'all would get got to live on root to run across it all.) tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN 25414/java
hither y'all go, 25414 is the PID or procedure id of your tomcat server. Since tomcat is a Java spider web application it started amongst java dominance as well as that's why y'all run across 25414/java.
Remember, if y'all are non logged inward every bit root or the user nether which your server is running, y'all mightiness run across next error:
No information could live on read for "-p": geteuid()=XXX but y'all should live on root
If y'all run across this error, thence merely sudo every bit the user which is running the tomcat. If y'all know how Linux works, then y'all tin dismiss solve this fault pretty rapidly but if y'all don't thence y'all volition get got a difficult time.
lsof dominance instance to notice the processes using a specific port
Here is the instance 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)
merely shout out back to -i option as well as colon (:) before the port like: 8080.
Btw, if y'all don't notice the lsof command inward your PATH, search inward /usr/sbin, to a greater extent than oft /usr/sbin is non added into user's PATH. In that y'all tin dismiss run the dominance every bit 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 y'all similar the lsof dominance as well as interested inward learning its other application, y'all should depository fiscal establishment gibe my post service 10 ways to utilization the lsof dominance inward Linux. You tin dismiss too get got a expect at below diagram yesteryear Julia Evans which effectively summarise the diverse options of lsof dominance inward Linux:
Summary
Here is the summary of how to notice the procedure listening on a detail port inward UNIX: grep, fifty-fifty if y'all merely plow over PID it volition fetch the job from netstat output thence I tin dismiss acquire the port on which a detail procedure is listening. Anyway, I volition present y'all a twosome of to a greater extent than tricks to notice the port on which a detail port is listening inward side yesteryear side tutorial.
Further Learning
Linux Command Line Basics
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Thanks for reading this article thence far. If y'all similar this Linux tutorial as well as notice the information useful delight part amongst your friends as well as colleagues. If y'all get got whatsoever questions or feedback thence delight drib a note.
Further Learning
Linux Command Line Basics
examples)
Thanks for reading this article thence far. If y'all similar this Linux tutorial as well as notice the information useful delight part amongst your friends as well as colleagues. If y'all get got whatsoever questions or feedback thence delight drib a note.