linux系统下安装mencached

#!/bin/sh  
echo "Start to start memcached server $(date)..."  
  
MEMCACHED=/usr/local/memcached/bin/memcached  
  
usage()  
{  
     echo "usage: `basename $0` port"  
}  
  
if [ -n "$1" ]  
then  
{  
     pid=`ps aux|grep memcached|grep "$1" |grep -v grep|awk ‘{print $2}‘`  
     if [ -n "$pid" ]  
     then  
     {  
          sleep 2  
          echo "kill memcached which port is $1 begin"  
          echo "pid:$pid"  
          kill -9 $pid  
          echo "kill memcached which port is $1 end"  
          sleep 2  
     }  
     fi  
     echo "begin to start memcached in port $1"  
     LOG_FILE=/var/log/memcached/memcached_$1.log  
     rm -f $LOG_FILE  
     $MEMCACHED -d -m 2048 -p $1 -u root -vv >> $LOG_FILE 2>&1  
     echo "start memcached end"  
     tail -f $LOG_FILE  
}  
else  
{  
     usage  
     exit 1  
}  
fi