Release port on MacOSX and Linux

manishsanger — Fri, 15 Dec 2017 06:33:51 +0000

Sometimes when we start application on MacOSx or linux they don’t start, because an port is already occupied by application which terminated unexpectedly or by some other application. Developers face these kind of issue more frequently, when we run java application in our IDE eclipse or IntelliJ Idea and switch between run/debug or error in run/debug. Now we need to free the port which was occupied by an existing instance of the application or any other application, so that we can run the program again. This is a 2 step process:

1. Find applications running on a particular port

lsof -i :[port]

2. Kill application running on a port by PID we got from the previous step:

Kill -9 [PID]

Here is the screenshot:

free port on MacOSX or linux terminal

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Install Java7 on Linux (Ubuntu 12.04)

manishsanger — Fri, 12 Apr 2013 10:34:58 +0000

If you are running an older version on java on your Ubuntu 12.04 environment, you must remove it before installing Java7. Do the following to remove:

$sudo apt-get purge openjdk*

If you installed java 7 earlier and having problem with java then you have to do the following to remove it:

$sudo rm /var/lib/dpkg/info/oracle-java7-installer*

$sudo apt-get purge oracle-java7-installer*

$sudo rm /etc/apt/sources.list.d/*java*

$sudo apt-get update

Installing Oracle Java7 on Ubuntu 12.04 LTS:

$sudo add-apt-repository ppa:webupd8team/java

$sudo apt-get update

$sudo apt-get install oracle-java7-installer

You will be prompted couple of times for permissions and Oracle Policy agreement [You must be agreed to Oracle policies to install Java :-)].

That’s it! Now you have Oracle Java7 installed on your Ubuntu 12.04 environment, to check the Java version run the following on terminal:

$java -version

java version "1.7.0_17"

Java(TM) SE Runtime Environment (build 1.7.0_17-b02)

Java HotSpot(TM) 64-Bit Server VM (build 23.7-b01, mixed mode)

Or You can check the java version by searching java in Ubuntu dashboard.

Oracle Java 7 plugin Control Panel -> General Tab -> About

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Linux Archives - Manish Sanger

Release port on MacOSX and Linux

Install Java7 on Linux (Ubuntu 12.04)