Linux view ports occupy process number, program name method _linux

View port occupancy under Linux:
1.
To see which process is taking up 819 ports:

Case9-sghfofo:/usr/local/cnbj/tomcat-bj/bin # lsof-i:859
Results after run:
COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME
Java 24907 root 31u IPv4 248905027 TCP *:859 (LISTEN)

We know from the above that the 859 port is occupied by the process number 24907 process and is a Java process.

2.
To see where the process number 24907 is:

Case9-sghfofo:/usr/local/cnbj/tomcat-bj/bin # Ps-ef|grep 24907
Root 13421 29276 0 20:08 pts/2 00:00:00 grep 24907
Root 24907 1 0 11:43 PTS/4 00:03:53/USR/JAVA/JDK1.6.0_13/BIN/JAVA-SERVER-XX:PERMSIZE=256M-XX:MAXPERMSIZE=512M-XBOOTC Lasspath/p:java-net-socket.jar-djava.util.logging.manager=org.apache.juli.classloaderlogmanager- djava.util.logging.config.file=/usr/local/cnsh/tomcat-sh/conf/logging.properties-djava.endorsed.dirs=/usr/ Local/cnsh/tomcat-sh/bin/endorsed-classpath:/usr/local/cnsh/tomcat-sh/bin/bootstrap.jar-dcatalina.base=/usr/ local/cnsh/tomcat-sh/bin-dcatalina.home=/usr/local/cnsh/tomcat-sh/bin-djava.io.tmpdir=/usr/local/cnsh/ tomcat-sh/bin/temp-xmx512m-xms256m org.apache.catalina.startup.Bootstrap Start

By the above we know that the directory is occupied by Tomcat for/usr/local/cnsh/tomcat-sh/bin/.