bash - How to create PID for forked process in init script? -

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i know problem unsure solution is.

so, have uwsgi process using graphite work nginx. here background information:

i installed uwsgi pip , run uwsgi -configfile (.ini):

[uwsgi] processes = 1 socket = 127.0.0.1:3031 gid = root uid = root chdir = /opt/graphite/conf daemonize = /var/log/graphite/uwsgi.log #pidfile = /var/run/uwsgi.pid module = wsgi:application

i have init script following (i found on internet , not done):

path=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin desc="uwsgi daemon" name=uwsgi daemon=/usr/local/bin/uwsgi configfile=/opt/graphite/conf/$name.ini pidfile=/var/run/$name.pid scriptname=/etc/init.d/$name  set -e [ -x "$daemon" ] || exit 0  start() {     if [ -f "$pidfile" ];then        echo "${name} service running" >&2        return 1     fi     echo "starting $name" >&2     $daemon $configfile || echo -n "uwsgi running"      }  stop() {     $daemon --stop $pidfile || echo -n "uwsgi not running"     rm -f $pidfile     echo "$daemon stopped." }

here situation: if have .ini file create pid - comes process id not close actual pid is. way works, found uwsgi starts , picks config file , daemonizes process. so, if use along lines of 

ps -ef |awk '/[u]wsgi/{print $2}' > $pidfile

it have 2 process ids. e.g.

cat /opt/uwsgi/uwsgi.ini 4121 4141

now second pid # actual running process.

how can use awk command grab pid cut touch pidfile second #?

i not sure command use. ideas?

i wasn't searching right keyword or found answer here: how use sed print specific line

so, did added | sed -n '2p' init script , got script input correct pid /var/run/.pid process.

my init script follows:

#! /bin/sh  path=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin desc="uwsgi daemon" name=uwsgi daemon=/usr/local/bin/uwsgi configfile=/opt/graphite/conf/$name.ini pidfile=/var/run/$name.pid scriptname=/etc/init.d/$name  set -e [ -x "$daemon" ] || exit 0  start() {     if [ -f "$pidfile" ];then        echo "${name} service running" >&2        return 1     fi     echo "starting $name" >&2     $daemon $configfile || echo -n "uwsgi running"     sleep 2     ps -ef |awk '/[u]wsgi/{print $2}'| sed -n '2p' > $pidfile }  stop() {     if [ ! -f "$pidfile" ];        echo "${name} service not running" >&2        return 1     fi     $daemon --stop $pidfile || echo -n "uwsgi not running"     rm -f $pidfile     echo "$daemon stopped." }  status() {     ps aux |grep $daemon |sed -n '1p' }  case "$1" in   start)     start     ;;   stop)     stop     ;;   status)     status     ;;   restart)     stop     sleep 1     start     ;;   *)     echo "usage: $0 {start|stop|restart|status}" esac

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