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Script to kill a process running at a certain port

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# 1  
Old 06-22-2014
Script to kill a process running at a certain port
Hello,
I have multiple scripts (vlc1, vlc2,...vlc5) and as I do not know how to run them as upstart processes, I entered my script links into rc.local file.
Here is the sample one for process vlc1:

Code:
$ nano /etc/rc.local

added below line into rc.local
Code:
/var/bin/./vlc1 &

Port nr of vlc1 process is 14001

When I want to kill vlc1, i enter:
Code:
$ sudo netstat -lpn |grep :14001

it gives related process number, let's assume that it's 950. I type,
Code:
$ kill 950

Can anybody help me on how to run a script to kill vlc1 or how I can run vlc1 with restart/stop/start commands in terminal ?

Thanks in advance
Boris
Last edited by Scrutinizer; 06-22-2014 at 12:43 PM.. Reason: code tags
# 2  
Old 06-22-2014
Firstly, do you need different scripts files for each - are these all essentially the same script, with just the port number replaced in each?

If so we could consider writing a vlcN script, where the port number is passed into the script e.g:

Code:
/var/bin/vlcN -p 14001 stop
/var/bin/vlcN -p 14001-14010 start
/var/bin/vlcN -p 14005 restart

# 3  
Old 06-23-2014
Quote:
Originally Posted by Chubler_XL
Firstly, do you need different scripts files for each - are these all essentially the same script, with just the port number replaced in each?

If so we could consider writing a vlcN script, where the port number is passed into the script e.g:

Code:
/var/bin/vlcN -p 14001 stop
/var/bin/vlcN -p 14001-14010 start
/var/bin/vlcN -p 14005 restart

Hello,

Seperate script for each process would be better.
So if you would share only one script, I can create for others..

Some softwares have start/stop/restart functions and you can control the software status from terminal line. If you need to know VLC code, I can share it under this thread.


Thanks in advance
Boris
# 4  
Old 06-23-2014
This is a start
Code:
port=14001
port_to_pid(){
netstat -lpn | awk '$0~":"p"\\>" {x=$NF; sub(/^[^0-9]*/,"",x); sub(/[^0-9]*$/,"",x); print x; exit}' p="$1"
}

case $1 in
start)
  pid=`port_to_pid $port`
  if [ -n "$pid" ]; then
    echo "already running, pid=$pid"
  else
    ...
  fi
;;
stop)
  pid=`port_to_pid $port`
  if [ -n "$pid" ]; then
    kill "$pid"
  fi
;;
restart) $0 stop; sleep 1; $0 start
;;
esac

# 5  
Old 06-23-2014
Quote:
Originally Posted by MadeInGermany
This is a start
Code:
port=14001
port_to_pid(){
netstat -lpn | awk '$0~":"p"\\>" {x=$NF; sub(/^[^0-9]*/,"",x); sub(/[^0-9]*$/,"",x); print x; exit}' p="$1"
}

case $1 in
start)
  pid=`port_to_pid $port`
  if [ -n "$pid" ]; then
    echo "already running, pid=$pid"
  else
    ...
  fi
;;
stop)
  pid=`port_to_pid $port`
  if [ -n "$pid" ]; then
    kill "$pid"
  fi
;;
restart) $0 stop; sleep 1; $0 start
;;
esac

Hello MadeInGermany,
Sorry but, how pid nr will understand that vlc1 should be restarted when i run this code?There is no "vlc1" expression in this code. Nicht functioniert.

Boris
# 6  
Old 06-23-2014
As said, this is a start.
E.g. replace the ... by the "vlc1" command...
and make the new script executable...
# 7  
Old 06-23-2014
Hello,
Here is the latest script file:

filename: sc1
Code:
port=14001
port_to_pid(){
netstat -lpn | awk '$0~":"p"\\>" {x=$NF; sub(/^[^0-9]*/,"",x); sub(/[^0-9]*$/,"",x); print x; exit}' p="$1"
}

case $1 in
start)
  pid=`port_to_pid $port`
  if [ -n "$pid" ]; then
    echo "already running, pid=$pid"
  else
    sudo -u boris cvlc -vvv /home/boris2/movie.avi --sout '#transcode{vcodec=mp2v,acodec=a52,vb=1024,ab=64,width=704,height=480,deinterlace}: standard{access=http,mux=ts,dst=computer_dynamic_ip:14001}' :sout-mux-caching=10000 > video_log 2>&1 & 
  fi
;;
stop)
  pid=`port_to_pid $port`
  if [ -n "$pid" ]; then
    kill "$pid"
  fi
;;
restart) $0 stop; sleep 1; $0 start
;;
esac

Do you think that anything I did wrong?
When i listen 14001, no pid result comes out.
I also did:

Code:
$ chmod 755 sc1

Thanks in advance
Boris
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