[root@cache01 scripts]# vim mem_check.sh #!/bin/bashcount_mem=$(netstat -lntup|grep memcached|wc -l)function get_set() {        set_mvalue=$(printf "set key008 0 5 10\r\noldboy0987\r\n"|nc 10.0.0.21 11211)        get_mvalue=$(printf "get key008\r\n"|nc 10.0.0.21 11211|wc -l)        ${set_mvalue} &>/dev/null        echo "${get_mvalue}"                if [ ${get_mvalue} -gt 1 ]        then                echo "memcached 服务set get 正常"        else                echo "mem 的set get 失败"        fi}if [ ${count_mem} -eq 4 ]then        get_setelse        echo "服务没有启动,将重启服务,再次检查"        systemctl start memcached.service        sleep 3        get_setfi