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
yum clean headers #清理/var/cache/yum的headersyum clean packages #清理/var/cache/yum下的软件包yum clean metadata...1234
释放网页缓存(To free pagecache):
sync; echo 1 > /proc/sys/vm/drop_caches1
释放目录项和索引(To free dentries and inodes):
sync; echo 2 > /proc/sys/vm/drop_caches1
释放网页缓存,目录项和索引(To free pagecache, dentries and inodes):
sync; echo 3 > /proc/sys/vm/drop_caches1
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