aria2c.sh

#!/bin/sh

### BEGIN INIT INFO
# Provides:          aria2c
# Required-Start:    $network $syslog $local_fs
# Required-Stop:     $network $syslog $local_fs
# Should-Start:      $local_fs
# Should-Stop:       $local_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: aria2c
# Description: aria2c is a lightweight multi-protocol & multi-source command-line download utility
### END INIT INFO

if [ -e /lib/lsb/init-functions ]; then
    . /lib/lsb/init-functions

    log_success() {
        log_success_msg "$1"
    }

    log_failure() {
        log_failure_msg "$1"
    }
else
    . /etc/rc.d/init.d/functions

    log_success() {
        echo_success
        echo "$1"
    }

    log_failure() {
        echo_failure
        echo "$1"
    }
fi

NAME=aria2c
CONF=/etc/aria2c.conf
DAEMON=/usr/bin/aria2c
DAEMONOPTS="--daemon=true --enable-rpc --rpc-listen-all" # --conf-path=$CONF"
PIDFILE=/var/run/$NAME.pid
RUNUSER=aria2

case "$1" in
    start)
        echo "Starting $NAME:"
        sudo -u $RUNUSER $DAEMON $DAEMONOPTS > /dev/null 2>&1
        PID=`pidof $NAME` > /dev/null 2>&1
        if [ -z $PID ]; then
            log_failure "failed"
        else
            echo $PID > $PIDFILE
            log_success "started"
        fi
        ;;
    stop)
        echo "Stopping $NAME:"
        if [ -f $PIDFILE ]; then
            PID=`cat $PIDFILE`
            kill -HUP $PID
            rm -f $PIDFILE
            log_success "stopped"
        else
           log_failure "not running"
        fi
        ;;
    restart)
        $0 stop && sleep 2 && $0 start
        ;;
    status)
        if [ -f $PIDFILE ]; then
            PID=`cat $PIDFILE`
            echo "$NAME pid  $PID is running"
        else
            echo "$NAME is not running"
        fi
        ;;
    *)
        echo "Usage: $0 {start|stop|restart|status}"
        exit 1
esac

For Ubuntu. Tested on 14.04.1 LTS