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                            查看緩存的命令
free -m
清理緩存的命令　
echo 1 >?/proc/sys/vm/drop_caches
echo 2 >?/proc/sys/vm/drop_caches
echo 3 >?/proc/sys/vm/drop_caches
echo 0 是不釋放緩存
echo 1 是釋放頁緩存
ehco 2 是釋放dentries和inodes緩存
echo 3 是釋放 1 和 2 中說道的的所有緩存
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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