shell拉进程
#!/bin/shMM=`ps -ef|grep memcached|grep -v grep|wc -l`
while [ "$MM" -eq 0 ]
do
echo "$(date +%Y%m%d%H%M%S),the memcached is down,try to up it" >>/data/shell/men.log
/usr/bin/memcached -d -u root -m 512 -p 39999 -c 1024
sleep 2s
MM=`ps -ef|grep memcached|grep -v grep|wc -l`
done
echo "$(date +%Y%m%d%H%M%S),the memcached is ok" >>/data/shell/men.log
使用ps 统计进程数，如果为零。则拉起程序
并记录log
date 用法参考http://www.cnblogs.com/peida/archive/2012/12/13/2815687.html
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