[root@sama ~]# free -m
total used free shared buffers cached
Mem: 2021 1458 562 0 206 412
-/+ buffers/cache: 839 1181
Swap: 4063 0 4063
You have new mail in /var/spool/mail/root
[root@sama ~]# echo 3 | tee /proc/sys/vm/drop_caches
3
[root@sama ~]# free -m
total used free shared buffers cached
Mem: 2021 908 1112 0 0 105
-/+ buffers/cache: 802 1219
Swap: 4063 0 4063
[root@sama ~]#
total used free shared buffers cached
Mem: 2021 1458 562 0 206 412
-/+ buffers/cache: 839 1181
Swap: 4063 0 4063
You have new mail in /var/spool/mail/root
[root@sama ~]# echo 3 | tee /proc/sys/vm/drop_caches
3
[root@sama ~]# free -m
total used free shared buffers cached
Mem: 2021 908 1112 0 0 105
-/+ buffers/cache: 802 1219
Swap: 4063 0 4063
[root@sama ~]#
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