memed.txt

EM算法的改进

#!/bin/sh
#
# chkconfig: 345 90 90
# description: Starts and stops meme and mast server
#
# $Id: memed.txt 1339 2006-09-21 19:46:28Z tbailey $
#
# $Log$
# Revision 1.5  2005/10/07 05:43:43  nadya
# add check for existance of LOGS/ for writing tmp files
# add output when no running servers found
#
# Revision 1.4  2005/10/07 05:33:14  nadya
# move user and servers variables to meme_config
# source meme-config instead of meme.sh
#
# Revision 1.3  2005/09/21 23:00:02  nadya
# add check for uid on start/stop. Allow only meme user to start
# and meme/root to stop.
#
# Revision 1.2  2005/09/21 20:12:57  nadya
# Don't start servers unless executed by the meme user.
#
# Revision 1.1  2005/08/12 20:48:29  nadya
# initial revision
#
#

CONF=@MEMEDIR@/etc/meme_config

if [ -f $CONF ] ; then
    . $CONF
else
    echo "$CONF does not exist. Meme installation is incomplete"
    exit 1
fi

if [ ! -x $MEME_SERVER ]; then
    echo  "$MEME_SERVER is not an executable. Skipping startup"
    exit 1
fi

if [ ! -x $MAST_SERVER ]; then
    echo  "$MAST_SERVER is not an executable. Skipping startup"
    exit 1
fi

if [ ! -d $MEME_LOGS ]; then
    echo  "$MEME_LOGS does not exist. Meme installation is incomplete"
    exit 1
fi


pids () {
    meme_pid=`/bin/ps uwx | grep "meme-server $MEME_PORT" | grep -v grep | awk '{print $2}'`
    mast_pid=`/bin/ps uwx | grep "mast-server $MAST_PORT" | grep -v grep | awk '{print $2}'`
}

checkUserStart () {
    USER=`id -un`
    if [ $USER != $MEME_USER ] ; then
        echo "Mast and meme servers need to be started by user $MEME_USER."
        exit 1
    fi
}

checkUserStop () {
    USER=`id -un`
    if [ $USER != $MEME_USER -a $USER != root ] ; then
        echo "Mast and meme servers need to be stopped by users $MEME_USER or root."
        exit 1
    fi
}

status () {
    pids
    if [ -n "$meme_pid" ]; then
        echo "Meme (pid $meme_pid) is running ..."
        MEME_RETVAL=0
    else
        MEME_RETVAL=1
    fi
    if [ -n "$mast_pid" ]; then
        echo "Mast (pid $mast_pid) is running ..."
        MAST_RETVAL=0
    else
        MAST_RETVAL=1
    fi
    RETVAL=$[$MEME_RETVAL + $MAST_RETVAL]
    return $RETVAL
}

case "$1" in
    start)
        status
        checkUserStart
        if [ $MEME_RETVAL -eq "1" ] ; then
            echo "Starting meme server" 
            $MEME_SERVER > /dev/null 2>&1
            MEME_RETVAL=$?
        fi
        if [ $MAST_RETVAL -eq "1" ] ; then
            echo "Starting mast server" 
            $MAST_SERVER > /dev/null 2>&1
            MAST_RETVAL=$?
        fi
        RETVAL=$[$MEME_RETVAL + $MAST_RETVAL]
        ;;

    stop)
        status
        checkUserStop
        if [ $MEME_RETVAL -eq "0" ] ; then
            echo "Shutting down meme server" 
            kill -TERM $meme_pid
            MEME_RETVAL=$?
        else
            echo "Meme is not running"
            MEME_RETVAL=0
        fi

        if [ $MAST_RETVAL -eq "0" ] ; then
            echo "Shutting down mast server" 
            kill -TERM $mast_pid
            MAST_RETVAL=$?
        else
            echo "Mast is not running"
            MAST_RETVAL=0
        fi
        RETVAL=$[$MEME_RETVAL + $MAST_RETVAL]
        ;;

    status)
        status
        RETVAL=$?
        if [ $MEME_RETVAL -eq "1" ] ; then
            echo "No running meme server found" 
        fi
        if [ $MAST_RETVAL -eq "1" ] ; then
            echo "No running mast server found" 
        fi
        ;;

    restart)
        $0 stop
        $0 start
        RETVAL=$?
        ;;
    *)
        echo "Usage: $0 {start | stop | restart | status}"
        exit 1
esac
       
exit $RETVAL