Linux释放内存
释放网页缓存(To free pagecache):
sync;echo1>/proc/sys/vm/drop_caches
释放目录项和索引(To free dentries and inodes):
sync;echo2>/proc/sys/vm/drop_caches
释放网页缓存，目录项和索引（To free pagecache,dentries and inodes）:
sync;echo3>/proc/sys/vm/drop_caches@H_301_14@清理yum缓存
清理yum缓存使用yum clean 命令，yum clean 的参数有headers,packages,Metadata,dbcache,plugins,expire-cache,rpmdb,all
yumcleanheaders#清理/var/cache/yum的headersyumcleanpackages#清理/var/cache/yum下的软件包yumcleanMetadata...原文链接：https://www.f2er.com/centos/380643.html
