Killing (Almost) Any Process on Linux
Have you ever accidentally turned off your Rails server with ctrl+Z?
I know I did and here are some simple guidelines to kill that Rails server process so you can restart it again.
Find PID of process you want to turn off
Open terminal and type lsof -i :number_of_port to find PID of the process you want to kill. For example, if your Rails server is running on port 3000, the command will look like this:
lsof -i :3000
The output of this command should be something like this:
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
ruby 1438 ubuntu 14u IPv4 691363 0t0 TCP localhost:3000 (LISTEN)
Kill the process
In terminal type kill -9 PID_OF_PROCESS to kill the process! You can find PID of process under PID column of lsof -i command.
In our case the command would look like this:
kill -9 1438
And that is it! You have successfully killed this process and you can restart your Rails server.
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