Unicorn: Start, Stop and Restart Centos 6 - ruby-on-rails

Question

I've just setup nginx and unicorn. I start unicorn like this:
unicorn_rails -c /var/www/Web/config/unicorn.rb -D
I've tried the various commands for stopping the unicorn but none of them work. I usually just restart the server and start unicorn again but this is very annoying.
EDIT
unicorn.rb file (/var/www/Web/config/):
# Set the working application directory
# working_directory "/path/to/your/app"
working_directory "/var/www/Web"
# Unicorn PID file location
# pid "/path/to/pids/unicorn.pid"
pid "/var/www/Web/pids/unicorn.pid"
# Path to logs
# stderr_path "/path/to/log/unicorn.log"
# stdout_path "/path/to/log/unicorn.log"
stderr_path "/var/www/Web/log/unicorn.log"
stdout_path "/var/www/Web/log/unicorn.log"
# Unicorn socket
listen "/tmp/unicorn.Web.sock"
listen "/tmp/unicorn.Web.sock"
# Number of processes
# worker_processes 4
worker_processes 2
# Time-out
timeout 30
default.conf (/etc/nginx/conf.d/):
upstream app {
# Path to Unicorn SOCK file, as defined previously
server unix:/tmp/unicorn.Web.sock fail_timeout=0;
}
server {
listen 80;
server_name localhost;
# Application root, as defined previously
root /root/Web/public;
try_files $uri/index.html $uri #app;
location #app {
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_redirect off;
proxy_pass http://app;
}
error_page 500 502 503 504 /500.html;
client_max_body_size 4G;
keepalive_timeout 10;
}

Answer 1

This is what I do:
$ for i in `ps awx | grep unico | grep -v grep | awk '{print $1;}'`; do kill -9 $i; done && unicorn_rails -c /var/www/Web/config/unicorn.rb -D
If you don't want to have all this line, script it, like this:
/var/www/Web/unicorn_restart.sh:
#!/bin/bash
for i in `ps awx | grep unicorn | grep -v grep | awk '{print $1;}'`; do
kill $i
done
unicorn_rails -c /var/www/Web/config/unicorn.rb -D
and then:
$ chmod +x /var/www/Web/unicorn_restart.sh
summon it each time calling:
$ /var/www/Web/unicorn_restart.sh